Pub Date : 2023-02-02DOI: 10.13057/asianjfor/r070104
P. Joshi, Rajeev Joshi, R. Sapkota, Manoj Panta, Priya S. Chand
Abstract. Joshi P, Joshi R, Sapkota RP, Panta M, Chand P. 2023. Vegetation diversity, structure, composition and carbon stock of community managed forests of Mid-hills Nepal. Asian J For 7: 29-36. Depending on management practices, forests can serve as both carbon sinks and sources. The goal of reducing carbon emissions and increasing the carbon sink is thought to be feasible if carbon reservoirs in current forests are protected and conserved. This study was objectively conducted to assess the vegetation diversity, structure, and carbon stock of the Mid-hills of Nepal. The study was undertaken in the Lanta Community Forest, Jajarkot District, Nepal, which has an extent of 38.65 hectares. Data for vegetation analysis and carbon stock assessment were collected using systematic random sampling using quadrats of 10×10 m with a total number of 35 quadrats. Within each quadrat, individual trees and bamboo were identified in the sites, and their height (m) and DBH (cm) were measured. Density, frequency, basal area, and Important Value Index (IVI) were calculated as structural parameters of vegetation. The Above-Ground Tree Biomass (AGTB) and Below-Ground Tree Biomass (BGTB) were calculated using an allometric equation based on tree diameter, height, and wood-specific gravity. The species diversity, species richness, and evenness were found to be 2.2, 2.35, and 0.83, respectively. A total of 14 tree species, with 723 individuals and one bamboo species were recorded. Rhododendron arboreum Sm. had the highest tree density with 211 trees/ha, while Tsuga dumosa (D.Don) Eichler had the highest IVI. Total wood volume, biomass, and total carbon stock were estimated at 15.37 m3 ha-1, 31.99 t ha-1, and 15.03 t ha-1, respectively. There was a strong negative correlation (r = -0.59) between R. arboreum and R. campanulatum D. Don and a strong positive correlation (r = +0.65) between Malus sikkimensis and Machilus species. For the preservation and sustainable management of community forests, information regarding the structure, composition, and dominance of tree species is provided by the study. The establishment of community forests is thus demonstrated in this article as a means of promoting the protection and preservation of regional biodiversity.
摘要刘建军,刘建军,刘建军,刘建军。尼泊尔中山群落管理森林的植被多样性、结构、组成和碳储量亚洲J: 7: 29-36。根据管理做法,森林既可以作为碳汇,也可以作为碳源。减少碳排放和增加碳汇的目标被认为是可行的,如果现有森林中的碳库得到保护和养护。本研究旨在客观地评估尼泊尔中山地区的植被多样性、结构和碳储量。这项研究是在尼泊尔Jajarkot地区的Lanta社区森林进行的,面积为38.65公顷。植被分析和碳储量评估数据采用系统随机抽样,样方为10×10 m,共35个样方。在每个样方内,鉴定出样地的树木和竹子个体,并测量其高度(m)和胸径(cm)。计算植被密度、频次、基底面积和重要价值指数(IVI)作为结构参数。利用基于树径、树高和木材比重的异速生长方程计算地上和地下树木生物量(AGTB)。物种多样性、物种丰富度和均匀度分别为2.2、2.35和0.83。共记录到14种乔木,723株,1种竹。杜鹃花树密度最高,达211棵/ha, IVI最高的是Tsuga dumosa (d.p ondon) Eichler。总木材量、生物量和总碳储量分别为15.37 m3 ha-1、31.99 t ha-1和15.03 t ha-1。树木林与钟状木林呈极显著负相关(r = -0.59),锡金苹果与马基勒斯呈极显著正相关(r = +0.65)。该研究为群落森林的保护和可持续管理提供了有关树种结构、组成和优势度的信息。因此,本文论证了群落森林的建立是促进区域生物多样性保护的一种手段。
{"title":"Vegetation diversity, structure, composition and carbon stock of community managed forests of Mid-hills, Nepal","authors":"P. Joshi, Rajeev Joshi, R. Sapkota, Manoj Panta, Priya S. Chand","doi":"10.13057/asianjfor/r070104","DOIUrl":"https://doi.org/10.13057/asianjfor/r070104","url":null,"abstract":"Abstract. Joshi P, Joshi R, Sapkota RP, Panta M, Chand P. 2023. Vegetation diversity, structure, composition and carbon stock of community managed forests of Mid-hills Nepal. Asian J For 7: 29-36. Depending on management practices, forests can serve as both carbon sinks and sources. The goal of reducing carbon emissions and increasing the carbon sink is thought to be feasible if carbon reservoirs in current forests are protected and conserved. This study was objectively conducted to assess the vegetation diversity, structure, and carbon stock of the Mid-hills of Nepal. The study was undertaken in the Lanta Community Forest, Jajarkot District, Nepal, which has an extent of 38.65 hectares. Data for vegetation analysis and carbon stock assessment were collected using systematic random sampling using quadrats of 10×10 m with a total number of 35 quadrats. Within each quadrat, individual trees and bamboo were identified in the sites, and their height (m) and DBH (cm) were measured. Density, frequency, basal area, and Important Value Index (IVI) were calculated as structural parameters of vegetation. The Above-Ground Tree Biomass (AGTB) and Below-Ground Tree Biomass (BGTB) were calculated using an allometric equation based on tree diameter, height, and wood-specific gravity. The species diversity, species richness, and evenness were found to be 2.2, 2.35, and 0.83, respectively. A total of 14 tree species, with 723 individuals and one bamboo species were recorded. Rhododendron arboreum Sm. had the highest tree density with 211 trees/ha, while Tsuga dumosa (D.Don) Eichler had the highest IVI. Total wood volume, biomass, and total carbon stock were estimated at 15.37 m3 ha-1, 31.99 t ha-1, and 15.03 t ha-1, respectively. There was a strong negative correlation (r = -0.59) between R. arboreum and R. campanulatum D. Don and a strong positive correlation (r = +0.65) between Malus sikkimensis and Machilus species. For the preservation and sustainable management of community forests, information regarding the structure, composition, and dominance of tree species is provided by the study. The establishment of community forests is thus demonstrated in this article as a means of promoting the protection and preservation of regional biodiversity.","PeriodicalId":115036,"journal":{"name":"Asian Journal of Forestry","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123801011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-23DOI: 10.13057/asianjfor/r070103
Eric Gnahore, Kouakou Guy-Casimir Douffi, Yao N’guessan, Achiedo Jean Grevin Amba, Diomande Ibrahima, M. Koné, A. Bakayoko
Abstract. Gnahore E, Douffi KG-C, N’guessan YJ, Amba AJG, Ibrahima D, Kone M, Bakayoko A. 2023. Floristic composition and structure of closed and open forests in the Banco National Park, Abidjan, Côte d’Ivoire. Asian J For 7: 17-26. Natural ecosystems are pressured to degradation caused by human activities. To develop conservation guidelines for these ecosystems, it was necessary to have enough information on their biodiversity. This study aimed to investigate the species richness, diversity, structure, and composition of vegetation in the Banco National Park (BNP), Abidjan, Côte d’Ivoire, in two forest types, namely closed and open forests. Vegetational data was collected using a sampling plot and itinerant methods. The results showed that 345 and 283 species were recorded in the closed and open forest, respectively, suggesting that the closed forest appears richer than the open forest. Fabaceae, Rubiaceae, and Apocynaceae were the most dominant families in both forest types. Both forest types had a high Shannon-Weaver diversity index and high Pielou equality index. The most important species in the open forest included Chrysophyllum subnudum Baker (Sapotaceae), Allanblackia floribunda Oliv. (Clusiaceae) and Funtumia africana (Benth.) Stapf (Apocynaceae), while in the closed forest were Strombosia pustulata Oliv. (Olacaceae), Turraeanthus africanus (Welw. ex C.DC.) Pellegr. (Meliaceae), and Monodora myristica (Gaertn.) Dunal (Annonaceae). The diametric structure showed the greatest proportion of individuals with low diameter classes, indicating regeneration potential. However, there were great differences in stand structure between the open and the closed forest, especially in high-diameter classes, indicating that the open forest has been pressured by timber cutting. The results of this study can serve as baseline information to develop conservation and rehabilitation strategies in BNP to sustain its biodiversity components.
{"title":"Floristic composition and structure of closed and open forests in the Banco National Park, Abidjan, Côte d’Ivoire","authors":"Eric Gnahore, Kouakou Guy-Casimir Douffi, Yao N’guessan, Achiedo Jean Grevin Amba, Diomande Ibrahima, M. Koné, A. Bakayoko","doi":"10.13057/asianjfor/r070103","DOIUrl":"https://doi.org/10.13057/asianjfor/r070103","url":null,"abstract":"Abstract. Gnahore E, Douffi KG-C, N’guessan YJ, Amba AJG, Ibrahima D, Kone M, Bakayoko A. 2023. Floristic composition and structure of closed and open forests in the Banco National Park, Abidjan, Côte d’Ivoire. Asian J For 7: 17-26. Natural ecosystems are pressured to degradation caused by human activities. To develop conservation guidelines for these ecosystems, it was necessary to have enough information on their biodiversity. This study aimed to investigate the species richness, diversity, structure, and composition of vegetation in the Banco National Park (BNP), Abidjan, Côte d’Ivoire, in two forest types, namely closed and open forests. Vegetational data was collected using a sampling plot and itinerant methods. The results showed that 345 and 283 species were recorded in the closed and open forest, respectively, suggesting that the closed forest appears richer than the open forest. Fabaceae, Rubiaceae, and Apocynaceae were the most dominant families in both forest types. Both forest types had a high Shannon-Weaver diversity index and high Pielou equality index. The most important species in the open forest included Chrysophyllum subnudum Baker (Sapotaceae), Allanblackia floribunda Oliv. (Clusiaceae) and Funtumia africana (Benth.) Stapf (Apocynaceae), while in the closed forest were Strombosia pustulata Oliv. (Olacaceae), Turraeanthus africanus (Welw. ex C.DC.) Pellegr. (Meliaceae), and Monodora myristica (Gaertn.) Dunal (Annonaceae). The diametric structure showed the greatest proportion of individuals with low diameter classes, indicating regeneration potential. However, there were great differences in stand structure between the open and the closed forest, especially in high-diameter classes, indicating that the open forest has been pressured by timber cutting. The results of this study can serve as baseline information to develop conservation and rehabilitation strategies in BNP to sustain its biodiversity components.","PeriodicalId":115036,"journal":{"name":"Asian Journal of Forestry","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129376921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-12DOI: 10.13057/asianjfor/r060106
Lukelo Matimbwi, S. Madoffe
Abstract. Matimbwi L, Madoffe SS. 2022. The impact of bushfires on animal abundance and diversity across land tenures in Miombo woodlands, Tanzania. Asian J For 6: 43-51. Southern Africa is dominated by Miombo forests (woodlands), the world's largest savanna. The purpose of this research was to examine how bushfires affect mammalian populations in Miombo woodlands under various forest tenure systems. The data was gathered through household questionnaires, a probing question checklist for key informants, participant observation, Participatory Rural Appraisal (PRA) methods, and a field inventory. We enlisted the aid of the local communities in our analysis of the PRA data we collected. Quantitative and qualitative data and information were subjected to content and structural-functional analysis. Quantitative data was examined using Statistical Package for the Social Sciences (SPSS) software. Microsoft Excel was used to examine inventory data on animal stocks. The average number of mammals collected from each forest tenure system was compared using Analysis of Variance (ANOVA) to see if there were statistically significant variations. The variety of mammal species in various forest tenure systems was measured using the Shannon-Wiener Index (H). Based on the findings, agricultural activities (44.5%), charcoal production (21.1%), and wildlife hunting (18.9%) accounted for the vast majority of bushfires in Miombo woods. It was thought that illegal logging and honey collection were the only contributing factors. Mammal populations tend to be most significant in Central Governmental Forest Reserves, then in those of the Local Government, and finally in those of the Village Government. Mildly burned sections in the Central Governmental Forest Reserve had a diversity index of 3.2. In contrast, those in the Local Government Forest Reserve and the Village Forest Reserve had indices of 2.0. There was little difference in the diversity index values of the Central Governmental Forest Reserve (2.0) and the Village Forest Reserve (2.0) for moderately burned blocks and the Local Government Forest Reserve (1.6) for unburned blocks. The Central Governmental Forest Reserve had a diversity value of 1.5 for the severely burned blocks, the Village Governmental Forest Reserve had a value of 1.4, and the Local Government Forest Reserve had a value of 1.2. Like other mammals with a low fire escape rate, bushfires hit the rock hyrax particularly hard. As a result, it is suggested that the current management regimes of Local Government Authorities be strengthened to ensure enhanced local community participation with more effective law enforcement measures to save the woods from deterioration. Similarly, communities should be given access to financing and encouragement to pursue income-generating activities to lessen their reliance on Miombo woodlands.
{"title":"The impact of bushfires on animal abundance and diversity across land tenures in Miombo woodlands, Tanzania","authors":"Lukelo Matimbwi, S. Madoffe","doi":"10.13057/asianjfor/r060106","DOIUrl":"https://doi.org/10.13057/asianjfor/r060106","url":null,"abstract":"Abstract. Matimbwi L, Madoffe SS. 2022. The impact of bushfires on animal abundance and diversity across land tenures in Miombo woodlands, Tanzania. Asian J For 6: 43-51. Southern Africa is dominated by Miombo forests (woodlands), the world's largest savanna. The purpose of this research was to examine how bushfires affect mammalian populations in Miombo woodlands under various forest tenure systems. The data was gathered through household questionnaires, a probing question checklist for key informants, participant observation, Participatory Rural Appraisal (PRA) methods, and a field inventory. We enlisted the aid of the local communities in our analysis of the PRA data we collected. Quantitative and qualitative data and information were subjected to content and structural-functional analysis. Quantitative data was examined using Statistical Package for the Social Sciences (SPSS) software. Microsoft Excel was used to examine inventory data on animal stocks. The average number of mammals collected from each forest tenure system was compared using Analysis of Variance (ANOVA) to see if there were statistically significant variations. The variety of mammal species in various forest tenure systems was measured using the Shannon-Wiener Index (H). Based on the findings, agricultural activities (44.5%), charcoal production (21.1%), and wildlife hunting (18.9%) accounted for the vast majority of bushfires in Miombo woods. It was thought that illegal logging and honey collection were the only contributing factors. Mammal populations tend to be most significant in Central Governmental Forest Reserves, then in those of the Local Government, and finally in those of the Village Government. Mildly burned sections in the Central Governmental Forest Reserve had a diversity index of 3.2. In contrast, those in the Local Government Forest Reserve and the Village Forest Reserve had indices of 2.0. There was little difference in the diversity index values of the Central Governmental Forest Reserve (2.0) and the Village Forest Reserve (2.0) for moderately burned blocks and the Local Government Forest Reserve (1.6) for unburned blocks. The Central Governmental Forest Reserve had a diversity value of 1.5 for the severely burned blocks, the Village Governmental Forest Reserve had a value of 1.4, and the Local Government Forest Reserve had a value of 1.2. Like other mammals with a low fire escape rate, bushfires hit the rock hyrax particularly hard. As a result, it is suggested that the current management regimes of Local Government Authorities be strengthened to ensure enhanced local community participation with more effective law enforcement measures to save the woods from deterioration. Similarly, communities should be given access to financing and encouragement to pursue income-generating activities to lessen their reliance on Miombo woodlands.","PeriodicalId":115036,"journal":{"name":"Asian Journal of Forestry","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134150252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-08DOI: 10.13057/asianjfor/r070102
M. DAFA-ALLA, Hashim Adam Abdelkarim, Ahmed Ibrahim Abuelbashar, Musab Hamid Hassan
Abstract. Dafa-Alla M, Abdelkari HA, Abuelbashar AI, Hassan MH. 2022. Boswellia papyrifera a tree of economic importance in dry land Sudan: Dendrometric parameters and tapping characteristics. Asian J For 7: 10-16. We conducted this research in Abugadaf Natural Forest Reserve (ANFR) located within Blue Nile state, Sudan. The objectives were to examine dendrometric parameters and to analyze tapping characteristics for frankincense production. We randomly distributed 97 sample plots; in each, we counted B. papyrifera trees, measured their diameter at breast height (dbh), total height, bole height, and crown diameter, and examined the correlation between crown diameter and dbh. We examined 116 tapping spots made on 13 randomly selected trees. In each tree, we measured upper and lower tapping heights, calculated potentially untapped bole height, counted the number of tapping spots, measured their dimensions, recorded their directions, and compared mean numbers of tapping spots at four directions using one-way ANOVA (?=0.05). Results revealed that the distributions of dbh and the total height of tapped B. papyrifera followed a bell shape, and that of bole height and crown diameter followed a bell-shaped skewed to the right. Results revealed a significant (P=0.000) correlation between crown diameter and dbh (N=499) that trees were tapped at the four directions without significant difference (P=0.427) between mean numbers of tapping spots at the four directions. The study concludes that current tapping practice doesn’t strictly adhere to recommended tapping guides, particularly with minimum lower tapping height and preference of concentration of tapping in east-west directions.
摘要Dafa-Alla M, Abdelkari HA, Abuelbashar AI, Hassan MH. 2022。苏丹旱地一种重要的经济树种:树形参数和采伐特征。亚洲J: 7:10 -16。我们在苏丹青尼罗州的Abugadaf自然森林保护区(ANFR)进行了这项研究。目的是研究乳香生产的树状结构参数,并分析乳香生产的攻丝特性。随机分布97个样地;在每个样本中,我们对纸草树进行计数,测量其胸径(dbh)、总高、洞高和冠径,并检验冠径与胸径的相关性。我们在随机选择的13棵树上检查了116个敲击点。在每棵树中,我们测量了上下攻丝高度,计算了潜在未开发孔高度,计算了攻丝点的数量,测量了攻丝点的尺寸,记录了攻丝点的方向,并使用单因素方差分析比较了四个方向上攻丝点的平均数量(?=0.05)。结果表明,采后的纸莎草胸径和总高度呈钟形分布,孔高和冠径呈向右倾斜的钟形分布。结果表明,4个方向上采伐的树冠直径与胸径(N=499)呈极显著相关(P=0.000),而4个方向上平均采伐点数之间差异不显著(P=0.427)。研究得出结论,目前的敲击实践并没有严格遵守建议的敲击指南,特别是最小的较低的敲击高度和偏好集中在东西方向的敲击。
{"title":"Boswellia papyrifera a tree of economic importance in dry land Sudan: Dendrometric parameters and tapping characteristics","authors":"M. DAFA-ALLA, Hashim Adam Abdelkarim, Ahmed Ibrahim Abuelbashar, Musab Hamid Hassan","doi":"10.13057/asianjfor/r070102","DOIUrl":"https://doi.org/10.13057/asianjfor/r070102","url":null,"abstract":"Abstract. Dafa-Alla M, Abdelkari HA, Abuelbashar AI, Hassan MH. 2022. Boswellia papyrifera a tree of economic importance in dry land Sudan: Dendrometric parameters and tapping characteristics. Asian J For 7: 10-16. We conducted this research in Abugadaf Natural Forest Reserve (ANFR) located within Blue Nile state, Sudan. The objectives were to examine dendrometric parameters and to analyze tapping characteristics for frankincense production. We randomly distributed 97 sample plots; in each, we counted B. papyrifera trees, measured their diameter at breast height (dbh), total height, bole height, and crown diameter, and examined the correlation between crown diameter and dbh. We examined 116 tapping spots made on 13 randomly selected trees. In each tree, we measured upper and lower tapping heights, calculated potentially untapped bole height, counted the number of tapping spots, measured their dimensions, recorded their directions, and compared mean numbers of tapping spots at four directions using one-way ANOVA (?=0.05). Results revealed that the distributions of dbh and the total height of tapped B. papyrifera followed a bell shape, and that of bole height and crown diameter followed a bell-shaped skewed to the right. Results revealed a significant (P=0.000) correlation between crown diameter and dbh (N=499) that trees were tapped at the four directions without significant difference (P=0.427) between mean numbers of tapping spots at the four directions. The study concludes that current tapping practice doesn’t strictly adhere to recommended tapping guides, particularly with minimum lower tapping height and preference of concentration of tapping in east-west directions.","PeriodicalId":115036,"journal":{"name":"Asian Journal of Forestry","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130621634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-06DOI: 10.13057/asianjfor/r070101
N. J. Ngowi, A. Ngalawa
Abstract. Ngowi NJ, Ngalawa AA. 2022. Recycling for deforestation reduction in Tanzania: Why are households not using waste charcoal?. Asian J For 7: 1-8. Charcoal making and the subsequent waste charcoal produced to contribute to deforestation and the production of greenhouse gases, the major drivers for climate change. Whereas climate change is increasingly becoming a public issue, Africa produces 63% of the total global wood charcoal. Since 2004, the demand for wood charcoal on the continent has risen by 30%, the highest in the world. The low efficiency of locally made earth kilns, between 8% and 36%, reported in Africa has contributed to increased waste charcoal production on the continent. However, more information is needed on the cycling use of waste charcoal in low-income countries. In order to improve forest resource use, we investigated the factors influencing the cycling use of wood waste charcoal in the Kilosa District of East-Central Tanzania between 2020 and 2021. A total of 298 randomly selected households were involved in the survey. SPSS version 20 tools were used in the analysis through cross-tab descriptive statistics and the independent sample t-test. Results show that sex, age, expenditure on fuel energy, environment, and technology for cooking significantly affected household use of waste charcoal (p < 0.05). The availability of wastes (v = 0.272) was the most influential factor in the cycling use of waste charcoal. The paper shows that cycling the use of wood waste charcoal would reduce volumes of trees cleared for firewood and improve sanitation by removing rampantly disposed waste from the environment.
{"title":"Recycling for deforestation reduction in Tanzania: Why are households not using waste charcoal?","authors":"N. J. Ngowi, A. Ngalawa","doi":"10.13057/asianjfor/r070101","DOIUrl":"https://doi.org/10.13057/asianjfor/r070101","url":null,"abstract":"Abstract. Ngowi NJ, Ngalawa AA. 2022. Recycling for deforestation reduction in Tanzania: Why are households not using waste charcoal?. Asian J For 7: 1-8. Charcoal making and the subsequent waste charcoal produced to contribute to deforestation and the production of greenhouse gases, the major drivers for climate change. Whereas climate change is increasingly becoming a public issue, Africa produces 63% of the total global wood charcoal. Since 2004, the demand for wood charcoal on the continent has risen by 30%, the highest in the world. The low efficiency of locally made earth kilns, between 8% and 36%, reported in Africa has contributed to increased waste charcoal production on the continent. However, more information is needed on the cycling use of waste charcoal in low-income countries. In order to improve forest resource use, we investigated the factors influencing the cycling use of wood waste charcoal in the Kilosa District of East-Central Tanzania between 2020 and 2021. A total of 298 randomly selected households were involved in the survey. SPSS version 20 tools were used in the analysis through cross-tab descriptive statistics and the independent sample t-test. Results show that sex, age, expenditure on fuel energy, environment, and technology for cooking significantly affected household use of waste charcoal (p < 0.05). The availability of wastes (v = 0.272) was the most influential factor in the cycling use of waste charcoal. The paper shows that cycling the use of wood waste charcoal would reduce volumes of trees cleared for firewood and improve sanitation by removing rampantly disposed waste from the environment.","PeriodicalId":115036,"journal":{"name":"Asian Journal of Forestry","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124807374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-27DOI: 10.13057/asianjfor/r060207
T. Dey, M. A. Islam, S. M. R. Jubair
Abstract. Dey T, Islam MDA, Jubair SMR. 2022. Biomass and carbon accumulation in Northern Bangladesh Eucalyptus plantations: Effects of stand structure and age. Asian J For 6: 126-132. Eucalyptus plantations are a significant carbon sink as a fast-growing species in Bangladesh, but little is known regarding biomass, carbon output, and dynamics with stand age. We, therefore, assessed the stand structure, biomass accumulation, carbon storage, and their changing patterns with age in Eucalyptus camaldulensis Dehnh. plantations in the northern part of Bangladesh in early 2021. Biomass and carbon stocks were estimated using the allometric models specific for E. camaldulensis from the biophysical tree parameters (i.e., height and DBH). We used the data from 45 sample plots (100 sq. m each) covering different age classes such as 2, 5, 7, 8, 11, 13, and 21 years. The aboveground, belowground, total biomass, and carbon significantly varied between stand ages (p<0.05). The highest aboveground, belowground, and total carbon stocks were observed at 21 years, and the lowest was found at two years. We observed a positive and strong relationship between total carbon and stand variables such as stand height, diameter at breast height, basal area, crown width, crown length, and bole height but a negative relationship with density. The mean annual increment of both biomass and carbon increased sharply up to seven years and then decreased. Despite having some ecological constraints, E. camaldulensis accumulate a large amount of carbon from the atmosphere, perhaps aiding climate change mitigation.
摘要Dey T, Islam MDA, Jubair SMR。2022. 孟加拉北部桉树人工林的生物量和碳积累:林分结构和林龄的影响亚洲J . For 6: 126-132。在孟加拉国,桉树人工林作为一种快速生长的物种是一个重要的碳汇,但对生物量、碳输出和林龄动态知之甚少。为此,我们对杉木林分结构、生物量积累、碳储量及其随林龄的变化规律进行了研究。2021年初在孟加拉国北部的种植园。利用camaldulensis特有的异速生长模型,根据树的生物物理参数(即高度和胸径)估算了其生物量和碳储量。我们使用了来自45个样地(100平方公里)的数据。分别为2岁、5岁、7岁、8岁、11岁、13岁和21岁。林龄间地上、地下、总生物量和碳含量差异显著(p<0.05)。地上碳储量、地下碳储量和总碳储量在21年时最高,在2年时最低。总碳与林分高度、胸径、基底面积、冠宽、冠长、洞高呈显著正相关,与密度呈显著负相关。生物量和碳的年平均增加量在前7年急剧增加,后呈下降趋势。尽管有一些生态上的限制,棕叶松从大气中积累了大量的碳,可能有助于减缓气候变化。
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Pub Date : 2022-10-24DOI: 10.13057/asianjfor/r060205
Uchita Lamichhane, P. Ghimire
Abstract. Lamichhane U, Ghimire P. 2022. Vertical distribution of soil properties and soil organic carbon in community managed forest of Siwalik Hill, Nepal. Asian J For 6: 91-96. Nepal's Community Forestry (CF) approach is globally recognized as an innovative and successful approach to forest resource management. Shorea robusta Gaertn. is the dominant tree species of Nepal's forest which covers 19.28% of the total stem volume of the country's forest area. Soil represents a significant terrestrial Carbon (C) pool and can play a significant role in mitigating global warming. Therefore, analyzing soil physicochemical properties and Soil Organic Carbon (SOC) stock is essential because they are key parameters for evaluating land use management systems. The present study was conducted in the Durga Mai Community Forest (DMCF) of Makawanpur District, Nepal, to assess the vertical distribution of soil physicochemical properties and SOC stock. Soil samples within a 1 m profile in five depth layers (0-20 cm, 21-40 cm, 41-60 cm, 61-80cm, and 81-100 cm) were collected and analyzed for Bulk Density (BD), soil texture, soil pH, soil carbon content, Total Nitrogen (TN), Available Phosphorous (AP), Available Potassium (AK) and SOC stock. Sandy loam was the dominant soil textural class reported throughout the study area. Average BD, soil pH, TN, AP, and AK in the S. robusta forest's soil in 1 m soil profile depth were found to be 1.16 ±0.07 gmcm-3, 5.78 ±0.62, 0.14 ±0.04 %, 5.94 ±1.04 kgha-1, and 104.20 ±19.66 kgha-1, respectively. The results estimated 107.57 ±3.06 tha-1 of SOC stock in 1 m soil profile, with 0.93 ±0.21% average SOC content. Further, average TN, AP, and AK were found to be decreased with an increase in soil profile depths. Similarly, soil profile depths significantly affected SOC stock and soil properties like BD, soil pH, TN, AP, and AK.
{"title":"Vertical distribution of soil properties and soil organic carbon in community managed forest of Siwalik Hill, Nepal","authors":"Uchita Lamichhane, P. Ghimire","doi":"10.13057/asianjfor/r060205","DOIUrl":"https://doi.org/10.13057/asianjfor/r060205","url":null,"abstract":"Abstract. Lamichhane U, Ghimire P. 2022. Vertical distribution of soil properties and soil organic carbon in community managed forest of Siwalik Hill, Nepal. Asian J For 6: 91-96. Nepal's Community Forestry (CF) approach is globally recognized as an innovative and successful approach to forest resource management. Shorea robusta Gaertn. is the dominant tree species of Nepal's forest which covers 19.28% of the total stem volume of the country's forest area. Soil represents a significant terrestrial Carbon (C) pool and can play a significant role in mitigating global warming. Therefore, analyzing soil physicochemical properties and Soil Organic Carbon (SOC) stock is essential because they are key parameters for evaluating land use management systems. The present study was conducted in the Durga Mai Community Forest (DMCF) of Makawanpur District, Nepal, to assess the vertical distribution of soil physicochemical properties and SOC stock. Soil samples within a 1 m profile in five depth layers (0-20 cm, 21-40 cm, 41-60 cm, 61-80cm, and 81-100 cm) were collected and analyzed for Bulk Density (BD), soil texture, soil pH, soil carbon content, Total Nitrogen (TN), Available Phosphorous (AP), Available Potassium (AK) and SOC stock. Sandy loam was the dominant soil textural class reported throughout the study area. Average BD, soil pH, TN, AP, and AK in the S. robusta forest's soil in 1 m soil profile depth were found to be 1.16 ±0.07 gmcm-3, 5.78 ±0.62, 0.14 ±0.04 %, 5.94 ±1.04 kgha-1, and 104.20 ±19.66 kgha-1, respectively. The results estimated 107.57 ±3.06 tha-1 of SOC stock in 1 m soil profile, with 0.93 ±0.21% average SOC content. Further, average TN, AP, and AK were found to be decreased with an increase in soil profile depths. Similarly, soil profile depths significantly affected SOC stock and soil properties like BD, soil pH, TN, AP, and AK.","PeriodicalId":115036,"journal":{"name":"Asian Journal of Forestry","volume":"CE-25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126543357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-17DOI: 10.13057/asianjfor/r060206
R. Dubey, Neelima A. Moonambeth, A. Pandey
Abstract. Dubey R, Moonambeth N, Pandey AD. 2022. Taxonomy, distribution and statistical ecology of black mildew fungi reported from Maharashtra state of India. Asian J For 6: 97-125. The Maharashtra state of India represents some of the best non-equatorial tropical forests in the world. It supports many endemic species of plants, animals, and microorganisms, especially in the Western Ghats, India. Moreover, a research project entitled "Foliicolous fungi of Maharashtra" was allotted by the Botanical Survey of India, Ministry of Environment, Forests, and Climate change, India, to carry out the mycological studies. As part of this project, ongoing studies were carried out on black mildew fungi of this state. The present studies offer a taxonomic account, distribution, and ecological parameters of 72 black mildew taxa collected from different areas of Maharashtra state of India. The present study provides three new records of fungi to India, 31 new host records to India, 40 new records of fungi to the Maharashtra state of India, and one new variety, viz., Asterina jasmini Hansf. var. koyani var.nov., depicted by checklist and Figures. In addition, a comprehensive table containing information on location, date of collection, name of the collector, and new records are given for ready reference. During this study, Meliola was the dominant genus with 35 species, whereas Meliolina mollis was the dominant taxon obtained from a maximum of 5 collections. More than 90% of black mildew species are collected from the Western Ghats Districts. In diversity indices, Gini-Simpson's was 0.9818, and Shannon's was 4.1668. Pielou's evenness index was 0.9743, causing true diversity, calculated as an effective number of species (64), to be less than observed species richness (72).
{"title":"Taxonomy, distribution and statistical ecology of black mildews fungi reported from Maharashtra state of India","authors":"R. Dubey, Neelima A. Moonambeth, A. Pandey","doi":"10.13057/asianjfor/r060206","DOIUrl":"https://doi.org/10.13057/asianjfor/r060206","url":null,"abstract":"Abstract. Dubey R, Moonambeth N, Pandey AD. 2022. Taxonomy, distribution and statistical ecology of black mildew fungi reported from Maharashtra state of India. Asian J For 6: 97-125. The Maharashtra state of India represents some of the best non-equatorial tropical forests in the world. It supports many endemic species of plants, animals, and microorganisms, especially in the Western Ghats, India. Moreover, a research project entitled \"Foliicolous fungi of Maharashtra\" was allotted by the Botanical Survey of India, Ministry of Environment, Forests, and Climate change, India, to carry out the mycological studies. As part of this project, ongoing studies were carried out on black mildew fungi of this state. The present studies offer a taxonomic account, distribution, and ecological parameters of 72 black mildew taxa collected from different areas of Maharashtra state of India. The present study provides three new records of fungi to India, 31 new host records to India, 40 new records of fungi to the Maharashtra state of India, and one new variety, viz., Asterina jasmini Hansf. var. koyani var.nov., depicted by checklist and Figures. In addition, a comprehensive table containing information on location, date of collection, name of the collector, and new records are given for ready reference. During this study, Meliola was the dominant genus with 35 species, whereas Meliolina mollis was the dominant taxon obtained from a maximum of 5 collections. More than 90% of black mildew species are collected from the Western Ghats Districts. In diversity indices, Gini-Simpson's was 0.9818, and Shannon's was 4.1668. Pielou's evenness index was 0.9743, causing true diversity, calculated as an effective number of species (64), to be less than observed species richness (72).","PeriodicalId":115036,"journal":{"name":"Asian Journal of Forestry","volume":"122 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134619122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-16DOI: 10.13057/asianjfor/r060204
Tesfaye Humnessa, W. Gebretsadik, Alemayehu Negasa
Abstract. Humnessa T, Gebretsadik W, Negasa A. 2022. Identification and characterization of traditional agroforestry practices and their socioeconomic roles in Dendi District, Central Ethiopia. Asian J For 6: 83-89. This study was conducted in the Dendi District of Central Ethiopia in three kebele (smallest administration units in Ethiopia) to identify and characterize the existing traditional agroforestry practices and their contribution to household livelihood. Informal surveys were conducted through key informant interviews and physical observations, while formal surveys were conducted using structured questionnaires. Home gardens, scattered trees on cropland, scattered woody species on grazing land, live fencing, and rarely woodlots were traditional agroforestry practices identified in the area. Home gardens were the prevailing traditional agroforestry practices in the study area. Fifty-seven (57) perennial woody species and twenty-two (22) annual crops (including vegetables and crops) in the home garden, twelve (12) species of scattered trees on cropland, twenty-eight (28) woody species on grazing land, twenty-four (24) woody species on the live fence, and two (2) woody species on woodlots were planted and managed in the study area for several purposes. Except for woodlots, most woody species in traditional agroforestry were grouped under the Fabaceae family. Furthermore, most associated annual crops in home garden agroforestry were categorized under the Solanaceae family. Different tree management practices, such as branch pruning, coppicing, pollarding, and thinning, were undertaken by agroforestry practitioners to reduce negative interaction among components and maximize the overall products of the system.
{"title":"Identification and characterization of traditional agroforestry practices and their socioeconomic roles in Dendi District, Central Ethiopia","authors":"Tesfaye Humnessa, W. Gebretsadik, Alemayehu Negasa","doi":"10.13057/asianjfor/r060204","DOIUrl":"https://doi.org/10.13057/asianjfor/r060204","url":null,"abstract":"Abstract. Humnessa T, Gebretsadik W, Negasa A. 2022. Identification and characterization of traditional agroforestry practices and their socioeconomic roles in Dendi District, Central Ethiopia. Asian J For 6: 83-89. This study was conducted in the Dendi District of Central Ethiopia in three kebele (smallest administration units in Ethiopia) to identify and characterize the existing traditional agroforestry practices and their contribution to household livelihood. Informal surveys were conducted through key informant interviews and physical observations, while formal surveys were conducted using structured questionnaires. Home gardens, scattered trees on cropland, scattered woody species on grazing land, live fencing, and rarely woodlots were traditional agroforestry practices identified in the area. Home gardens were the prevailing traditional agroforestry practices in the study area. Fifty-seven (57) perennial woody species and twenty-two (22) annual crops (including vegetables and crops) in the home garden, twelve (12) species of scattered trees on cropland, twenty-eight (28) woody species on grazing land, twenty-four (24) woody species on the live fence, and two (2) woody species on woodlots were planted and managed in the study area for several purposes. Except for woodlots, most woody species in traditional agroforestry were grouped under the Fabaceae family. Furthermore, most associated annual crops in home garden agroforestry were categorized under the Solanaceae family. Different tree management practices, such as branch pruning, coppicing, pollarding, and thinning, were undertaken by agroforestry practitioners to reduce negative interaction among components and maximize the overall products of the system.","PeriodicalId":115036,"journal":{"name":"Asian Journal of Forestry","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130491694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract. Biadgligne A, Gobezie T, Mohammed A, Feleke E. 2022. Estimation of carbon stock and emission of community forests in Eastern Amhara, Ethiopia. Asian J For 6: 74-82. Carbon emission resulting from deforestation and forest degradation contributes to climate change. Halting deforestation is, therefore, one strategy to mitigate the changing climate. As the global carbon market develops, an opportunity to halt deforestation can be contributed by community forests as a win-win solution for climate change mitigation and livelihood provision, yet knowing the carbon stock of the forest is important to enhance the bargaining power of the community to get carbon finance. Thus, a case study was conducted to quantify carbon stocks and emissions from three community forests (i.e., Asha-Guba, Jemely, and Beshilo) in Eastern Amhara, Ethiopia. Stratified systematic sample quadrate methods were used, and a total of 57 equally spaced nested square quadrats were laid for the measurement of carbon density. Carbon pools, including above-ground living biomass, dead wood, surface litter, belowground root biomass, soil organic carbon, and harvested wood product, were accounted for the estimation of site-level carbon density (t ha-1) and carbon dioxide equivalent (CO2e) emission. There was high variability in the estimated mean carbon density and CO2e emission across the three community forests. The highest carbon density was recorded in the Asha-Guba community forest with 124.27 ± 8.29 t ha-1, followed by Jemely and Beshilo forests with 91.24 ± 3.18 t ha-1 and 73.55 ± 3.13 t ha-1, respectively. The largest proportion (59-63%) of carbon was stored in the soil pool, followed by the above-ground biomass (27-32%), while that in dead organic matter was insignificant. The community forests currently stored total carbon stocks of 57,612.14 ± 13.81ton (210,860.43 CO2e). To ensure the sustainable management of the forests, long-term finance and investment must be introduced urgently.
摘要刘建军,刘建军,刘建军,等。埃塞俄比亚东部阿姆哈拉社区森林碳储量和碳排放估算亚洲J: 6: 74-82。森林砍伐和森林退化造成的碳排放加剧了气候变化。因此,停止砍伐森林是缓解气候变化的一种策略。随着全球碳市场的发展,社区森林可以作为减缓气候变化和提供生计的双赢解决方案,为停止森林砍伐提供机会,但了解森林的碳储量对于提高社区获得碳融资的议价能力至关重要。因此,进行了一项案例研究,以量化埃塞俄比亚东阿姆哈拉三个社区森林(即Asha-Guba、Jemely和Beshilo)的碳储量和排放量。采用分层系统样方法,共设置57个等间距的嵌套样方进行碳密度测量。碳库包括地上生物量、枯枝、地表凋落物、地下根系生物量、土壤有机碳和采伐木制品,用于估算立地水平碳密度(t ha-1)和二氧化碳当量(CO2e)排放量。三种群落林的平均碳密度和二氧化碳排放量估计值存在高度变异。阿沙-古坝群落林碳密度最高,为124.27±8.29 t ha-1,其次是热密林和别什洛林,分别为91.24±3.18 t ha-1和73.55±3.13 t ha-1。土壤库中碳储量最大(59-63%),地上生物量次之(27-32%),死有机质中碳储量不显著。群落森林目前总碳储量为57,612.14±13.81吨(210,860.43 CO2e)。为了确保森林的可持续经营,迫切需要引入长期的资金和投资。
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