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Vegetation diversity, structure, composition and carbon stock of community managed forests of Mid-hills, Nepal 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
Pub Date : 2023-02-02 DOI: 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。
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引用次数: 0
Floristic composition and structure of closed and open forests in the Banco National Park, Abidjan, Côte d’Ivoire 阿比让Banco国家公园封闭和开放森林的植物区系组成和结构,Côte科特迪瓦
Pub Date : 2023-01-23 DOI: 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.
摘要李建军,李建军,李建军,李建军,李建军,李建军。阿比让Banco国家公园封闭和开放森林的植物区系组成和结构,Côte科特迪瓦。亚洲J: 7: 17-26。由于人类活动,自然生态系统被迫退化。为了制定这些生态系统的保护准则,必须有足够的生物多样性信息。本研究旨在调查位于Côte科特迪瓦阿比让的Banco国家公园(BNP)两种森林类型的物种丰富度、多样性、结构和植被组成。植被数据采集采用样地法和巡回法。结果表明,封闭林和开放林分别记录到物种345种和283种,表明封闭林比开放林更丰富。豆科、茜草科和夹竹桃科在两种林型中均为优势科。两种林型均具有较高的Shannon-Weaver多样性指数和较高的Pielou平等指数。在阔叶林中最重要的种有金菊(Chrysophyllum subnudum Baker)、花楸楸(Allanblackia floribunda Oliv)。(Clusiaceae)和非洲真菌(Benth.)在密闭林中生长的是密竹(Strombosia pustulata Oliv)。(油葵科);C.DC交货)。Pellegr。(Meliaceae)和Monodora myristica (Gaertn.)Dunal(番荔枝科)。直径结构中低径级个体所占比例最大,显示出再生潜力。但在林分结构上,林分结构与林分结构存在较大差异,特别是在大径级林分结构上,表明林分结构受到了采伐的压力。本研究结果可作为制定BNP保护和恢复策略的基础信息,以维持其生物多样性组成部分。
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引用次数: 0
The impact of bushfires on animal abundance and diversity across land tenures in Miombo woodlands, Tanzania 坦桑尼亚Miombo林地森林大火对动物数量和多样性的影响
Pub Date : 2023-01-12 DOI: 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.
摘要马多夫等。2022。坦桑尼亚Miombo林地森林大火对动物数量和多样性的影响。亚洲J: 6:43 -51。南部非洲主要是世界上最大的稀树草原Miombo森林(林地)。本研究的目的是研究在不同的森林权属制度下,森林火灾如何影响Miombo林地的哺乳动物种群。数据通过家庭问卷、关键举报人的探索性问题清单、参与式观察、参与式农村评估(PRA)方法和实地调查收集。我们在分析收集到的PRA数据时得到了当地社区的帮助。定量和定性的数据和信息进行了内容和结构功能分析。定量数据采用社会科学统计软件包(SPSS)软件进行检验。使用Microsoft Excel检查动物库存的库存数据。利用方差分析(ANOVA)对从每个森林权属系统收集的哺乳动物的平均数量进行比较,以确定是否存在统计学上显著的差异。利用Shannon-Wiener指数(H)测量了不同森林权属系统中哺乳动物物种的多样性。结果表明,农业活动(44.5%)、木炭生产(21.1%)和野生动物狩猎(18.9%)占Miombo森林森林火灾的绝大多数。人们认为非法采伐和采集蜂蜜是唯一的影响因素。哺乳动物的数量在中央政府的森林保护区最为显著,其次是地方政府的森林保护区,最后是村庄政府的森林保护区。中央政府禁林区轻度烧伤区多样性指数为3.2。而地方政府森林保护区和村级森林保护区的指数为2.0。中度烧毁的中央政府森林保护区和村级森林保护区的多样性指数差异不大(2.0),未烧毁的地方政府森林保护区的多样性指数差异不大(1.6)。中央政府森林保护区对严重烧毁街区的多样性值为1.5,村政府森林保护区的多样性值为1.4,地方政府森林保护区的多样性值为1.2。像其他火灾逃生率低的哺乳动物一样,森林大火对岩狸的打击尤其严重。因此,建议加强地方政府当局目前的管理制度,以确保加强地方社区的参与,采取更有效的执法措施,使森林免于恶化。同样,应使社区有机会获得资金并鼓励他们从事创收活动,以减少对米昂博林地的依赖。
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引用次数: 1
Boswellia papyrifera a tree of economic importance in dry land Sudan: Dendrometric parameters and tapping characteristics 苏丹旱地一种重要的经济树种:树形参数和采伐特征
Pub Date : 2023-01-08 DOI: 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。
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引用次数: 0
Recycling for deforestation reduction in Tanzania: Why are households not using waste charcoal? 坦桑尼亚减少森林砍伐的回收利用:为什么家庭不使用废木炭?
Pub Date : 2023-01-06 DOI: 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.
摘要njngowi, Ngalawa AA。2022. 坦桑尼亚减少森林砍伐的回收利用:为什么家庭不使用废木炭?亚洲J: 7:1 -8。木炭制造和随后产生的废炭助长了森林砍伐和温室气体的产生,而温室气体是气候变化的主要驱动因素。虽然气候变化日益成为一个公共问题,但非洲生产的木炭占全球总量的63%。自2004年以来,非洲大陆对木炭的需求增长了30%,是世界上最高的。据报道,非洲当地土窑的效率很低,在8%到36%之间,这导致了非洲大陆废炭产量的增加。然而,需要更多关于低收入国家废旧木炭循环利用的信息。为了改善森林资源利用,研究了2020 - 2021年坦桑尼亚中东部Kilosa地区木材废炭循环利用的影响因素。随机抽取298户家庭参与调查。采用SPSS第20版工具,通过交叉标签描述性统计和独立样本t检验进行分析。结果表明,性别、年龄、燃料能源支出、环境和烹饪技术对家庭废炭利用有显著影响(p < 0.05)。废物可利用性(v = 0.272)是影响废炭循环利用的最主要因素。这篇论文表明,循环使用木材废炭将减少砍伐树木以获取柴火的数量,并通过清除环境中猖獗的废物来改善卫生状况。
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引用次数: 0
Biomass and carbon accumulation in Northern Bangladesh Eucalyptus plantations: Effects of stand structure and age 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
Pub Date : 2022-10-27 DOI: 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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引用次数: 0
Vertical distribution of soil properties and soil organic carbon in community managed forest of Siwalik Hill, Nepal 尼泊尔Siwalik山群落管理森林土壤性质和土壤有机碳的垂直分布
Pub Date : 2022-10-24 DOI: 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.
摘要金迈尔·P. 2022。尼泊尔Siwalik山群落管理森林土壤性质和土壤有机碳的垂直分布亚洲J: 6:91 -96。尼泊尔的社区林业(CF)方法是全球公认的森林资源管理的创新和成功方法。Shorea robusta gaern。是尼泊尔森林的优势树种,占该国森林总面积的19.28%。土壤是一个重要的陆地碳(C)库,在减缓全球变暖方面可以发挥重要作用。因此,分析土壤理化性质和土壤有机碳(SOC)储量是评价土地利用管理制度的关键参数。本研究以尼泊尔Makawanpur地区的Durga Mai社区森林(DMCF)为研究对象,对土壤理化性质和有机碳储量的垂直分布进行了研究。在0 ~ 20 cm、21 ~ 40 cm、41 ~ 60 cm、61 ~ 80cm和81 ~ 100 cm 5个深度层内1 m剖面内采集土壤样品,分析土壤容重(BD)、土壤质地、土壤pH、土壤碳含量、全氮(TN)、速效磷(AP)、速效钾(AK)和有机碳储量。沙质壤土是整个研究区主要的土壤质地类。结果表明,1 m土壤剖面深度下,柽柳林土壤BD、pH、TN、AP和AK的平均值分别为1.16±0.07 gmcm-3、5.78±0.62、0.14±0.04%、5.94±1.04 kga -1和104.20±19.66 kga -1。结果表明,1 m土壤土壤有机碳储量为107.57±3.06 ha-1,平均有机碳含量为0.93±0.21%。土壤全氮、速效磷和速效钾均随土层深度的增加而降低。同样,土壤剖面深度显著影响土壤有机碳储量和土壤性质,如BD、土壤pH、TN、AP和AK。
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引用次数: 0
Taxonomy, distribution and statistical ecology of black mildews fungi reported from Maharashtra state of India 印度马哈拉施特拉邦黑霉真菌的分类、分布和统计生态学
Pub Date : 2022-10-17 DOI: 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).
摘要Dubey R, Moonambeth N, Pandey AD。2022. 印度马哈拉施特拉邦黑霉真菌的分类、分布和统计生态学。亚洲J: 6: 97-125。印度的马哈拉施特拉邦拥有世界上最好的非赤道热带森林。它支持许多特有的植物、动物和微生物物种,特别是在印度的西高止山脉。此外,印度环境、森林和气候变化部的印度植物调查局分配了一个题为“马哈拉施特拉邦的叶面真菌”的研究项目,以进行真菌学研究。作为该项目的一部分,正在对该州的黑霉真菌进行研究。本文对印度马哈拉施特拉邦不同地区采集的72个黑霉类群的分类、分布和生态参数进行了研究。本研究提供了3个印度真菌新记录、31个印度寄主新记录、40个印度马哈拉施特拉邦真菌新记录和1个新变种,即Asterina jasmini Hansf。科亚尼var.nov,由检查表和图所示。此外,还提供了一个包含地点、收集日期、收集者名称和新记录等信息的综合表,以备参考。在本研究中,从最多5个采集区获得的标本中,Meliola为优势属(35种),Meliolina mollis为优势分类群。超过90%的黑霉来自西高止山脉地区。多样性指数中,Gini-Simpson’s为0.9818,Shannon’s为4.1668。Pielou均匀度指数为0.9743,导致以有效物种数(64)计算的真实多样性小于观测到的物种丰富度(72)。
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引用次数: 0
Identification and characterization of traditional agroforestry practices and their socioeconomic roles in Dendi District, Central Ethiopia 埃塞俄比亚中部Dendi地区传统农林业实践及其社会经济作用的鉴定和特征
Pub Date : 2022-10-16 DOI: 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.
摘要张建军,张建军,张建军,等。埃塞俄比亚中部Dendi地区传统农林业实践及其社会经济作用的鉴定和特征亚洲J: 6:83 -89。这项研究是在埃塞俄比亚中部的Dendi区三个kebele(埃塞俄比亚最小的行政单位)进行的,目的是确定和描述现有的传统农林业做法及其对家庭生计的贡献。非正式调查通过关键信息提供者访谈和物理观察进行,而正式调查使用结构化问卷进行。该地区的传统农林业实践包括家庭花园、农田上分散的树木、牧场上分散的木本物种、围栏和很少的林地。家庭花园是研究区内盛行的传统农林业实践。研究区以多种目的种植和管理了57种多年生木本植物和22种一年生作物(包括蔬菜和农作物)、12种农田散种树木、28种放牧木本植物、24种围栏木本植物和2种林地木本植物。除林地外,传统农林业中大部分木本植物都归属于豆科。此外,家庭园林式农林业的大部分伴生一年生作物都属于茄科。农林业从业者采取了不同的树木管理措施,如树枝修剪、修剪、授粉和间伐,以减少各组成部分之间的负面相互作用,并最大限度地提高系统的整体产品。
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引用次数: 0
Estimation of carbon stock and emission of community forests in Eastern Amhara, Ethiopia 埃塞俄比亚东部阿姆哈拉社区森林碳储量和碳排放估算
Pub Date : 2022-10-10 DOI: 10.13057/asianjfor/r060203
Abebe Biadgligne, Tsegaye Gobezie, Abebe Mohammed, Estifanos Feleke
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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引用次数: 3
期刊
Asian Journal of Forestry
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