Pub Date : 2022-10-02DOI: 10.13057/asianjfor/r060201
Suriya Yeasmin, Kazi Nazrul Islam, M. Jashimuddin, M. M. Rahman, Anirban Chowdhury Jiku
Abstract. Yeasmin S, Islam KN, Jashimuddin M, Rahman MM, Jiku AC. 2022. Effectiveness of co-management in reducing forest dependency and improving socioeconomics of forest dependent people in Bangladesh. Asian J For 6: 56-64. Co-management of forest protected areas (PA) has started its journey in Bangladesh, intending to conserve forest resources by creating alternative income-generating activities for forest-dependent people. This study was designed to assess the effectiveness of co-management initiatives in improving socio-economic status and reducing peoples' forest dependency at Dudpukuria-Dhopachari Wildlife Sanctuary (DDWS), Bangladesh. A total of 142 respondents consisting of 71 co-management project-supported people (treatment) and 71 local people (control) with similar socio-economic conditions without any project support, were surveyed randomly through a semi-structured questionnaire. The Difference in Differences (DiD) method was applied to assess the effectiveness of this program. Results revealed that there was an insignificant difference between co-management participants and non-participants in the case of total income. Both parties also observed a similar trend for total forest resource extraction. However, the monthly income of co-management participants from secondary occupations increased by USD 16.46. In contrast, the monthly fuel wood extraction of the co-management participants was reduced, equivalent to USD 2.21. The studied socio-economic parameters were more or less similar for both parties. We conclude that the co-management interventions in DDWS resulted from insignificant differences in terms of socio-economic conditions and forest dependency of local forest-dependent communities.
摘要Yeasmin S, Islam KN, Jashimuddin M, Rahman MM, Jiku AC. 2022。共同管理在减少对森林的依赖和改善孟加拉国依赖森林的人的社会经济方面的有效性。亚洲J: 6:56 -64。森林保护区的共同管理已经在孟加拉国开始了它的旅程，打算通过为依赖森林的人民创造其他创收活动来保护森林资源。本研究旨在评估共同管理举措在改善孟加拉国Dudpukuria-Dhopachari野生动物保护区(DDWS)的社会经济地位和减少人们对森林依赖方面的有效性。通过半结构化问卷随机调查了142名受访者，其中包括71名共同管理项目支持的人(治疗)和71名具有相似社会经济条件但没有任何项目支持的当地人(对照组)。采用差异中的差异(DiD)方法评估该方案的有效性。结果显示，在总收入的情况下，共同管理参与者和非参与者之间的差异不显著。双方还观察到森林资源总开采量的类似趋势。然而，来自第二职业的共同管理参与者的月收入增加了16.46美元。相比之下，共同管理参与者每月提取的燃料木材减少了，相当于2.21美元。双方研究的社会经济参数或多或少相似。我们得出结论，在DDWS的共同管理干预措施中，当地森林依赖社区在社会经济条件和森林依赖方面的差异不显著。
{"title":"Effectiveness of co-management in reducing forest dependency and improving socioeconomics of forest dependent people in Bangladesh","authors":"Suriya Yeasmin, Kazi Nazrul Islam, M. Jashimuddin, M. M. Rahman, Anirban Chowdhury Jiku","doi":"10.13057/asianjfor/r060201","DOIUrl":"https://doi.org/10.13057/asianjfor/r060201","url":null,"abstract":"Abstract. Yeasmin S, Islam KN, Jashimuddin M, Rahman MM, Jiku AC. 2022. Effectiveness of co-management in reducing forest dependency and improving socioeconomics of forest dependent people in Bangladesh. Asian J For 6: 56-64. Co-management of forest protected areas (PA) has started its journey in Bangladesh, intending to conserve forest resources by creating alternative income-generating activities for forest-dependent people. This study was designed to assess the effectiveness of co-management initiatives in improving socio-economic status and reducing peoples' forest dependency at Dudpukuria-Dhopachari Wildlife Sanctuary (DDWS), Bangladesh. A total of 142 respondents consisting of 71 co-management project-supported people (treatment) and 71 local people (control) with similar socio-economic conditions without any project support, were surveyed randomly through a semi-structured questionnaire. The Difference in Differences (DiD) method was applied to assess the effectiveness of this program. Results revealed that there was an insignificant difference between co-management participants and non-participants in the case of total income. Both parties also observed a similar trend for total forest resource extraction. However, the monthly income of co-management participants from secondary occupations increased by USD 16.46. In contrast, the monthly fuel wood extraction of the co-management participants was reduced, equivalent to USD 2.21. The studied socio-economic parameters were more or less similar for both parties. We conclude that the co-management interventions in DDWS resulted from insignificant differences in terms of socio-economic conditions and forest dependency of local forest-dependent communities.","PeriodicalId":115036,"journal":{"name":"Asian Journal of Forestry","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115991607","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. Subedi PB, Mahara S, Paudel S , Bhandari J, Thagunna RS. 2023. Agroforestry potential of Kanchanpur District, Nepal using remote sensing and Geographic Information System. Asian J Agric 7: 65-74. Researchers are interested in agroforestry because it can reduce poverty and land degradation, mitigate climate change, and improve food security. This study aimed to determine the land potential for agroforestry in Kanchanpur District, Nepal, using Geographic Information System modeling concepts and a variety of ancillary (soil fertility) and satellite data (Digital Elevation Model, wetness, Normalized Difference Vegetation Index, and Land Use Land Cover) sets. It was accomplished by logically integrating various thematic layers in the GIS domain. For Kanchanpur District of Nepal's Sudurpaschim Province, agroforestry suitability maps showed that 76.14 percent was very high suitable, 3.12 percent was highly suitable, 13.89 percent was medium, 5.67 percent was low suitable, and 1.15 percent was very low suitable. The use of remote sensing and GIS to find suitable land for agroforestry have significant impacts, which will significantly aid in the study of agroforestry practices and the estimation of crucial factors for optimal productivity. Such analyses and results will undoubtedly assist agroforestry policymakers, and planners put it into practice and expanding in new areas. GIS modeling has enormous potential for land resource mapping, eventually contributing to the benefit of poor rural people, especially farmers, and helping ensure food and environmental security and a sustainable livelihood.
{"title":"Agroforestry potential of Kanchanpur District, Nepal using remote sensing and Geographic Information System","authors":"Prajwol Babu Subedi, Sandip Mahara, Susmita Paudel, Jyoti Bhandari, Roshan Singh Thagunna","doi":"10.13057/asianjfor/r060202","DOIUrl":"https://doi.org/10.13057/asianjfor/r060202","url":null,"abstract":"Abstract. Subedi PB, Mahara S, Paudel S , Bhandari J, Thagunna RS. 2023. Agroforestry potential of Kanchanpur District, Nepal using remote sensing and Geographic Information System. Asian J Agric 7: 65-74. Researchers are interested in agroforestry because it can reduce poverty and land degradation, mitigate climate change, and improve food security. This study aimed to determine the land potential for agroforestry in Kanchanpur District, Nepal, using Geographic Information System modeling concepts and a variety of ancillary (soil fertility) and satellite data (Digital Elevation Model, wetness, Normalized Difference Vegetation Index, and Land Use Land Cover) sets. It was accomplished by logically integrating various thematic layers in the GIS domain. For Kanchanpur District of Nepal's Sudurpaschim Province, agroforestry suitability maps showed that 76.14 percent was very high suitable, 3.12 percent was highly suitable, 13.89 percent was medium, 5.67 percent was low suitable, and 1.15 percent was very low suitable. The use of remote sensing and GIS to find suitable land for agroforestry have significant impacts, which will significantly aid in the study of agroforestry practices and the estimation of crucial factors for optimal productivity. Such analyses and results will undoubtedly assist agroforestry policymakers, and planners put it into practice and expanding in new areas. GIS modeling has enormous potential for land resource mapping, eventually contributing to the benefit of poor rural people, especially farmers, and helping ensure food and environmental security and a sustainable livelihood.","PeriodicalId":115036,"journal":{"name":"Asian Journal of Forestry","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121593169","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 : 2022-06-22DOI: 10.13057/asianjfor/r060105
A. Msuya, C. Mahonge
Abstract. Msuya AM, Mahonge CP. 2022. Impact on coffee production of climate variability, farmers adaptation and coping strategies in highlands of Kigoma District, Tanzania. Asian J For 6: 34-42. Worldwide, climate change and variability have raised concerns about potential changes to crop yields and production systems. This study concerns climate variability’s effects on coffee production among smallholder farmers in the highland zone of the Kigoma District, the western part of Tanzania. This study specifically aimed to determine how climatic variability affected coffee production and the strategies taken to cope with the problem. Also, this study determined farmers” perceptions of climatic change and variability. The coffee production and rainfall data for thirty years (1981-2010) were used. Also, to study the trend relationship between climate change and agricultural production. Data were collected using household surveys, interviews, focus group discussions, documentary reviews, and field observations. The sampling unit was the household; 120 respondents were selected from 5 villages. First, a purposive sampling technique was employed to study wards and villages, and then 5 villages from 2 wards were selected. In each village, 24 households producing coffee were randomly selected from the village register to 120 respondents. Then, correlation analysis was used to examine the relationship between rainfall variability and coffee production in the area. In contrast, to study the effect of rainfall variability/change on coffee production, a simple linear regression was used. Both coffee production and rainfall showed a decreasing trend. However, the correlation between both trends was insignificant at a 5% probability level. Moreover, it can be concluded that coffee production was not much influenced by rainfall, given the weak correlation between rainfall and coffee production and the decreasing trend for both. Still, other factors, like a shortage of agricultural inputs such as fertilizers and pesticides, must influence coffee production in the study area.
{"title":"Impact of climate variability, farmers adaptation and coping strategies on coffee production in highlands of Kigoma District, Tanzania","authors":"A. Msuya, C. Mahonge","doi":"10.13057/asianjfor/r060105","DOIUrl":"https://doi.org/10.13057/asianjfor/r060105","url":null,"abstract":"Abstract. Msuya AM, Mahonge CP. 2022. Impact on coffee production of climate variability, farmers adaptation and coping strategies in highlands of Kigoma District, Tanzania. Asian J For 6: 34-42. Worldwide, climate change and variability have raised concerns about potential changes to crop yields and production systems. This study concerns climate variability’s effects on coffee production among smallholder farmers in the highland zone of the Kigoma District, the western part of Tanzania. This study specifically aimed to determine how climatic variability affected coffee production and the strategies taken to cope with the problem. Also, this study determined farmers” perceptions of climatic change and variability. The coffee production and rainfall data for thirty years (1981-2010) were used. Also, to study the trend relationship between climate change and agricultural production. Data were collected using household surveys, interviews, focus group discussions, documentary reviews, and field observations. The sampling unit was the household; 120 respondents were selected from 5 villages. First, a purposive sampling technique was employed to study wards and villages, and then 5 villages from 2 wards were selected. In each village, 24 households producing coffee were randomly selected from the village register to 120 respondents. Then, correlation analysis was used to examine the relationship between rainfall variability and coffee production in the area. In contrast, to study the effect of rainfall variability/change on coffee production, a simple linear regression was used. Both coffee production and rainfall showed a decreasing trend. However, the correlation between both trends was insignificant at a 5% probability level. Moreover, it can be concluded that coffee production was not much influenced by rainfall, given the weak correlation between rainfall and coffee production and the decreasing trend for both. Still, other factors, like a shortage of agricultural inputs such as fertilizers and pesticides, must influence coffee production in the study area.","PeriodicalId":115036,"journal":{"name":"Asian Journal of Forestry","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126513525","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 : 2022-06-20DOI: 10.13057/asianjfor/r020105
Teguh Nur Arifin, A. Susilowati, S. Sutarno
Abstract. Arifin TN, Susilowati A, Sutarno. 2018. Ice Nucleation Active bacteria in Mount Lawu forest, Indonesia: 2. Identification and characterization of ina gene bacteria isolated from lichens. Asian J For 2: 39-46. Ice nucleation active (INA) bacteria can catalyze ice formation. Moreover, these bacteria cause frost injury in plants. This study aimed to determine the ina bacteria species of Mount Lawu forest, Java, Indonesia, based on the 16S rRNA gene and the characters of ice nucleation active gene coding of ina bacteria on lichens used ina gene primer. First, the isolates of ina bacteria were grown in NAG, and the DNA could be isolated. After that, genes coding for 16S rRNA and ina were amplified, and the amplification products were sequenced. Furthermore, the sequences were analyzed with BLAST program to know the similarity of bacteria species and ina gene characters. The result showed that the isolated ina bacteria had similarities with Pantoea, Pseudomonas, and Rahnella. The ina gene from N.2.1.B-13 isolate consists of 189 amino acids, dominated by a common amino acid found in other ina genes, like Alanine, Glycine, Tyrosine, Serine, Leucine, and Threonine. N terminal and C terminal are not found because ina gene from N.2.1.B-13 isolate is similar to the ice nucleation protein gene Pseudomonas borealis from bases 2947 bp to 3491 bp or 871 to 1060 amino acids.
{"title":"Ice Nucleation Active bacteria in Mount Lawu forest, Indonesia: 2. Identification and characterization of ina gene bacteria isolated from lichens","authors":"Teguh Nur Arifin, A. Susilowati, S. Sutarno","doi":"10.13057/asianjfor/r020105","DOIUrl":"https://doi.org/10.13057/asianjfor/r020105","url":null,"abstract":"Abstract. Arifin TN, Susilowati A, Sutarno. 2018. Ice Nucleation Active bacteria in Mount Lawu forest, Indonesia: 2. Identification and characterization of ina gene bacteria isolated from lichens. Asian J For 2: 39-46. Ice nucleation active (INA) bacteria can catalyze ice formation. Moreover, these bacteria cause frost injury in plants. This study aimed to determine the ina bacteria species of Mount Lawu forest, Java, Indonesia, based on the 16S rRNA gene and the characters of ice nucleation active gene coding of ina bacteria on lichens used ina gene primer. First, the isolates of ina bacteria were grown in NAG, and the DNA could be isolated. After that, genes coding for 16S rRNA and ina were amplified, and the amplification products were sequenced. Furthermore, the sequences were analyzed with BLAST program to know the similarity of bacteria species and ina gene characters. The result showed that the isolated ina bacteria had similarities with Pantoea, Pseudomonas, and Rahnella. The ina gene from N.2.1.B-13 isolate consists of 189 amino acids, dominated by a common amino acid found in other ina genes, like Alanine, Glycine, Tyrosine, Serine, Leucine, and Threonine. N terminal and C terminal are not found because ina gene from N.2.1.B-13 isolate is similar to the ice nucleation protein gene Pseudomonas borealis from bases 2947 bp to 3491 bp or 871 to 1060 amino acids.","PeriodicalId":115036,"journal":{"name":"Asian Journal of Forestry","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127208460","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 : 2022-06-20DOI: 10.13057/asianjfor/r010205
Khusnul FU'ADAH, S. Sari, A. Susilowati
Abstract. Fu’adah K, Sari SL, Susilowati A. 2017. Ice Nucleation Active bacteria in Mount Lawu forest, Indonesia: 1. Isolation and estimation of bacterial populations on lichens. Asian J For 1: 83-91. Ice Nucleation Active (INA) bacterias cause frost injury in plants. These bacteria are also predicted to play an important role in bioprecipitation, cloud formation, and rain. Most INA bacteria studies are conducted in subtropical areas. Therefore, studies on INA bacteria from tropical areas, especially Indonesia, need to be conducted. This study aimed to isolate and determine the number of INA bacteria in lichenes. samples of lichenes were taken from the hiking pathway of Cemoro Sewu, Mount Lawu forest, Java, Indonesia, at ±2.200, ±2.400, and ±2.600 m asl. INA bacteria were isolated by the spread plate method on the NA medium with 2.5 % glycerol and King’s B medium. A tube nucleation test determined ice nucleation activity. A multiple-tube nucleation test estimated the number of INA bacteria. The data were analyzed descriptively based on colony morphology, cell morphology, biochemical tests, and analysis of the numbers of INA bacteria. The result showed that 7 isolates from Parmelia sp. at an altitude of 2.532 m asl (station 2) have been known as INA bacterias. The number of INA bacteria in lichenes was 5 x 104/g, which was very low.
{"title":"Ice Nucleation Active bacteria in Mount Lawu forest, Indonesia: 1. Isolation and estimation of bacterial populations on lichens","authors":"Khusnul FU'ADAH, S. Sari, A. Susilowati","doi":"10.13057/asianjfor/r010205","DOIUrl":"https://doi.org/10.13057/asianjfor/r010205","url":null,"abstract":"Abstract. Fu’adah K, Sari SL, Susilowati A. 2017. Ice Nucleation Active bacteria in Mount Lawu forest, Indonesia: 1. Isolation and estimation of bacterial populations on lichens. Asian J For 1: 83-91. Ice Nucleation Active (INA) bacterias cause frost injury in plants. These bacteria are also predicted to play an important role in bioprecipitation, cloud formation, and rain. Most INA bacteria studies are conducted in subtropical areas. Therefore, studies on INA bacteria from tropical areas, especially Indonesia, need to be conducted. This study aimed to isolate and determine the number of INA bacteria in lichenes. samples of lichenes were taken from the hiking pathway of Cemoro Sewu, Mount Lawu forest, Java, Indonesia, at ±2.200, ±2.400, and ±2.600 m asl. INA bacteria were isolated by the spread plate method on the NA medium with 2.5 % glycerol and King’s B medium. A tube nucleation test determined ice nucleation activity. A multiple-tube nucleation test estimated the number of INA bacteria. The data were analyzed descriptively based on colony morphology, cell morphology, biochemical tests, and analysis of the numbers of INA bacteria. The result showed that 7 isolates from Parmelia sp. at an altitude of 2.532 m asl (station 2) have been known as INA bacterias. The number of INA bacteria in lichenes was 5 x 104/g, which was very low.","PeriodicalId":115036,"journal":{"name":"Asian Journal of Forestry","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126957345","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 : 2022-06-15DOI: 10.13057/asianjfor/r060104
H. Tynsong, M. Dkhar, B. Tiwari
Abstract. Tynsong H, Dkhar M, Tiwari BK. 2022. Tree diversity and vegetation structure of the tropical evergreen forests of the southern slopes of Meghalaya, North East India. Asian J For 6: 22-33. In the tropical evergreen forests of the southern slopes of Meghalaya, North East India, we examined the plant species diversity and community structure of woody plant species. The forests chosen for this study represent the area's primary vegetation. We counted a total number of 6016 individual trees belonging to 146 species, 95 genera, and 56 families from three 1-ha plots. The Shannon-Wiener Index (H') of the tree species in the three forest stands ranged from 3.74 to 3.95, the dominance of Simpson's index from 0.02 to 0.04, the evenness index from 0.68 to 0.83, and Margalef index range from 23.07 to 27.39. The density of woody species ranged from 1944 to 2100 trees ha-1 (mean 2005 ± 48.01). The dominant families based on Importance Value Index (IVI), number of species, genera and individuals were Fagaceae (IVI = 205.29, species= 11, genera= 4 and number of individuals= 1184), Lauraceae (IVI = 139.42, species= 22, genera= 9 and Individual= 882) and Euphorbiaceae (IVI = 68.39, species= 17, genera= 8 and Individual=478). Arecaceae represented by Arenga pinnata (Wurmb) Merr. and Caryota sp. and Pandanaceae, represented by Pandanus odoratissimus Blume, were the only monocot families, and Pinaceae, the sole gymnospermic family, represented by Pinus kesiya Royle ex Gordon. This study offers valuable knowledge about the species diversity and community structure of trees which is a prerequisite for efficient management and protection of the forests conserved by the local village communities primarily for ecosystem services.
{"title":"Tree diversity and vegetation structure of the tropical evergreen forests of the southern slopes of Meghalaya, North East India","authors":"H. Tynsong, M. Dkhar, B. Tiwari","doi":"10.13057/asianjfor/r060104","DOIUrl":"https://doi.org/10.13057/asianjfor/r060104","url":null,"abstract":"Abstract. Tynsong H, Dkhar M, Tiwari BK. 2022. Tree diversity and vegetation structure of the tropical evergreen forests of the southern slopes of Meghalaya, North East India. Asian J For 6: 22-33. In the tropical evergreen forests of the southern slopes of Meghalaya, North East India, we examined the plant species diversity and community structure of woody plant species. The forests chosen for this study represent the area's primary vegetation. We counted a total number of 6016 individual trees belonging to 146 species, 95 genera, and 56 families from three 1-ha plots. The Shannon-Wiener Index (H') of the tree species in the three forest stands ranged from 3.74 to 3.95, the dominance of Simpson's index from 0.02 to 0.04, the evenness index from 0.68 to 0.83, and Margalef index range from 23.07 to 27.39. The density of woody species ranged from 1944 to 2100 trees ha-1 (mean 2005 ± 48.01). The dominant families based on Importance Value Index (IVI), number of species, genera and individuals were Fagaceae (IVI = 205.29, species= 11, genera= 4 and number of individuals= 1184), Lauraceae (IVI = 139.42, species= 22, genera= 9 and Individual= 882) and Euphorbiaceae (IVI = 68.39, species= 17, genera= 8 and Individual=478). Arecaceae represented by Arenga pinnata (Wurmb) Merr. and Caryota sp. and Pandanaceae, represented by Pandanus odoratissimus Blume, were the only monocot families, and Pinaceae, the sole gymnospermic family, represented by Pinus kesiya Royle ex Gordon. This study offers valuable knowledge about the species diversity and community structure of trees which is a prerequisite for efficient management and protection of the forests conserved by the local village communities primarily for ecosystem services.","PeriodicalId":115036,"journal":{"name":"Asian Journal of Forestry","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125329644","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 : 2022-06-15DOI: 10.13057/asianjfor/r060103
Krishna B. Rawal, Prajwol Babu Subedi
Abstract. Rawal K, Subedi PB. 2022. Vegetation structure and carbon stock potential in the community-managed forest of the Mid-Western Hilly Region, Nepal. Asian J For 6: 15-21. Community forests (CF) play a crucial role in sustainable development and accumulate carbon to mitigate global climate change. The objective of this study was to evaluate the plant diversity, regeneration status, and carbon stock potential of two community-managed Shorea robusta-dominated forests in Nepal's Dailekh District, namely Bayeldhunga Pahapu CF and Bayeldhunga CF. A total of 76 sample plots were studied using a systematic sampling intensity of 0.5%. The density of species in the developmental phase was used to determine the forest's regeneration condition. Allometric equations were used to calculate the aboveground carbon store of tree species. Shorea robusta Gaertn. was the foremost species regarding regeneration and carbon storage in the studied forest areas, with high regeneration conditions. The seedlings, saplings, and trees in the Bayeldhunga Pahapu CF exceeded those in the Bayeldhunga CF. In both study areas, J-shaped reverse population curves were observed. This study provided details on tree species' regeneration condition, structure, proportions, and carbon sequestration capacity, which is critical for community forest management and conservation. The analysis showed that by altering the structure and proportions of community forests, community management has boosted the carbon storage of forests and enhanced forest productivity.
{"title":"Vegetation structure and carbon stock potential in the community-managed forest of the Mid-Western Hilly Region, Nepal","authors":"Krishna B. Rawal, Prajwol Babu Subedi","doi":"10.13057/asianjfor/r060103","DOIUrl":"https://doi.org/10.13057/asianjfor/r060103","url":null,"abstract":"Abstract. Rawal K, Subedi PB. 2022. Vegetation structure and carbon stock potential in the community-managed forest of the Mid-Western Hilly Region, Nepal. Asian J For 6: 15-21. Community forests (CF) play a crucial role in sustainable development and accumulate carbon to mitigate global climate change. The objective of this study was to evaluate the plant diversity, regeneration status, and carbon stock potential of two community-managed Shorea robusta-dominated forests in Nepal's Dailekh District, namely Bayeldhunga Pahapu CF and Bayeldhunga CF. A total of 76 sample plots were studied using a systematic sampling intensity of 0.5%. The density of species in the developmental phase was used to determine the forest's regeneration condition. Allometric equations were used to calculate the aboveground carbon store of tree species. Shorea robusta Gaertn. was the foremost species regarding regeneration and carbon storage in the studied forest areas, with high regeneration conditions. The seedlings, saplings, and trees in the Bayeldhunga Pahapu CF exceeded those in the Bayeldhunga CF. In both study areas, J-shaped reverse population curves were observed. This study provided details on tree species' regeneration condition, structure, proportions, and carbon sequestration capacity, which is critical for community forest management and conservation. The analysis showed that by altering the structure and proportions of community forests, community management has boosted the carbon storage of forests and enhanced forest productivity.","PeriodicalId":115036,"journal":{"name":"Asian Journal of Forestry","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125364680","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 : 2022-06-07DOI: 10.13057/asianjfor/r060102
S. Majumdar, Buddha Singh Rai, Ajit Rai, U. Ghosh, Silanjan Bhattacharyya, A. Bose, Nisha Goswami, D. Chakraborty, J. Sarkar, Sudipta Mukherjee, K. Acharya, P. Pradhan
Abstract. Majumdar S, Rai BS, Rai A, Ghosh U, Bhattacharyya S, Bose A, Goswami N, Chakraborty D, Sarkar J, Mukherjee S, Acharya K, Pradhan P. 2022. Discovery of a rare stiped puffball Calostoma junghuhnii in Neora Valley National Park, India: A new record for West Bengal, India. Asian J For 6: 9-14. The varied topography, soil, and climate of West Bengal, India, make conducive conditions for nurturing the magnificent diversity of macrofungi and their habitats. During an exploration of macro-fungal diversity in Neora Valley National Park, West Bengal, India, in 2021, basidiocarps of Calostoma (Calostomataceae) were collected and photographed, along with macro-morphological and ecological notes were taken. The specimens were identified through macro and micro-morphological characters following standard literature. Amplified description of Calostoma junghuhnii (Schltdl. & Müll. Berol.) Massee, along with necessary figures and photographs, is presented in this paper. A literature survey revealed that C. junghuhnii is a new record for West Bengal. The outcome of the present study would enrich data related to the macro-fungal diversity in the state of West Bengal, India.
摘要Majumdar S, Rai BS, Rai A, Ghosh U, Bhattacharyya S, Bose A, Goswami N, Chakraborty D, Sarkar J, Mukherjee S, Acharya K, Pradhan P. 2022。在印度Neora Valley国家公园发现了一只罕见的有刺的充气球Calostoma junghuhnii:这是印度西孟加拉邦的新纪录。亚洲J: 6:9 -14。印度西孟加拉邦多样的地形、土壤和气候，为培育种类繁多的大型真菌及其栖息地创造了有利条件。2021年，在印度西孟加拉邦Neora Valley国家公园进行大型真菌多样性调查时，对Calostoma (Calostomataceae)的担子果进行了采集和拍摄，并进行了宏观形态学和生态学记录。根据标准文献，通过宏观和微观形态特征对标本进行鉴定。junghuhnii Calostoma (Schltdl.)的扩增描述。和考虑。Berol)。马西，连同必要的数字和照片，在本文中提出。文献调查显示，C. junghuhnii是西孟加拉邦的新记录。本研究的结果将丰富与印度西孟加拉邦宏观真菌多样性相关的数据。
{"title":"Discovery of a rare stiped puffball Calostoma junghuhnii in Neora Valley National Park, India: A new record for West Bengal, India","authors":"S. Majumdar, Buddha Singh Rai, Ajit Rai, U. Ghosh, Silanjan Bhattacharyya, A. Bose, Nisha Goswami, D. Chakraborty, J. Sarkar, Sudipta Mukherjee, K. Acharya, P. Pradhan","doi":"10.13057/asianjfor/r060102","DOIUrl":"https://doi.org/10.13057/asianjfor/r060102","url":null,"abstract":"Abstract. Majumdar S, Rai BS, Rai A, Ghosh U, Bhattacharyya S, Bose A, Goswami N, Chakraborty D, Sarkar J, Mukherjee S, Acharya K, Pradhan P. 2022. Discovery of a rare stiped puffball Calostoma junghuhnii in Neora Valley National Park, India: A new record for West Bengal, India. Asian J For 6: 9-14. The varied topography, soil, and climate of West Bengal, India, make conducive conditions for nurturing the magnificent diversity of macrofungi and their habitats. During an exploration of macro-fungal diversity in Neora Valley National Park, West Bengal, India, in 2021, basidiocarps of Calostoma (Calostomataceae) were collected and photographed, along with macro-morphological and ecological notes were taken. The specimens were identified through macro and micro-morphological characters following standard literature. Amplified description of Calostoma junghuhnii (Schltdl. & Müll. Berol.) Massee, along with necessary figures and photographs, is presented in this paper. A literature survey revealed that C. junghuhnii is a new record for West Bengal. The outcome of the present study would enrich data related to the macro-fungal diversity in the state of West Bengal, India.","PeriodicalId":115036,"journal":{"name":"Asian Journal of Forestry","volume":"19 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116394835","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 : 2022-01-11DOI: 10.13057/asianjfor/r060101
R. Dubey
Abstract. Dubey R. 2022. Dictyosporium matherense sp. nov.: A new-fangled cheirosporous fungal species described from the Western Ghats of India. Asian J For 6: 1-8. A new species of Dictyosporium from forest areas of Matheran, Western Ghats of India, is described and illustrated. This new-fangled cheirosporous species is characterized by large conidia being cheiroid, digitate, variable shape, having 600-3000 individual cells arranged in 15-80 rows consisting of widening apical ends with tightly appressed prolongations/arms which produce hyaline, rounded appendages which latter on produces 8-20 hyaline, long, and hypha-like septate appendages. The isolate was identified based on asexual morphs and, to some extent, stands close to D. palmae, D. digitatum, and D. stellatum but remarkably differs from all in size of conidia. To our understanding, the present taxon has turned out to be a hitherto unreported species. The morphological character of all accepted species of Dictyosporium is also presented.
{"title":"Dictyosporium matherense sp. nov.: A new-fangled cheirosporous fungal species described from the Western Ghats of India","authors":"R. Dubey","doi":"10.13057/asianjfor/r060101","DOIUrl":"https://doi.org/10.13057/asianjfor/r060101","url":null,"abstract":"Abstract. Dubey R. 2022. Dictyosporium matherense sp. nov.: A new-fangled cheirosporous fungal species described from the Western Ghats of India. Asian J For 6: 1-8. A new species of Dictyosporium from forest areas of Matheran, Western Ghats of India, is described and illustrated. This new-fangled cheirosporous species is characterized by large conidia being cheiroid, digitate, variable shape, having 600-3000 individual cells arranged in 15-80 rows consisting of widening apical ends with tightly appressed prolongations/arms which produce hyaline, rounded appendages which latter on produces 8-20 hyaline, long, and hypha-like septate appendages. The isolate was identified based on asexual morphs and, to some extent, stands close to D. palmae, D. digitatum, and D. stellatum but remarkably differs from all in size of conidia. To our understanding, the present taxon has turned out to be a hitherto unreported species. The morphological character of all accepted species of Dictyosporium is also presented.","PeriodicalId":115036,"journal":{"name":"Asian Journal of Forestry","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121541698","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 : 2021-09-16DOI: 10.13057/asianjfor/r050207
P. Pradhan, A. Setyawan
Abstract. Pradhan P, Setyawan AD. 2021. Filtering multi-collinear predictor variables from multi-resolution rasters of WorldClim 2.1 for Ecological Niche Modeling in Indonesian context. Asian J For 5: 111-122. WorldClim is one of the popular environmental datasets which hosts multi-resolution interpolated gridded climate raster surfaces and derived bioclimatic variables for both the immediate past, present and future scenarios. Bioclimatic variables along with other environmental factors like solar radiation, wind speed, water vapour pressure etc. have been used as primary set of explanatory variables for mapping and spatial modeling of many biological processes, including defining environmental niche of a species and identifying potential areas for its distribution through machine learning methods like Ecological Niche Modeling or Species Distribution Modeling or Habitat Suitability Modeling. However, the interpolated explanatory datasets are known to cause over-fitting of the models mainly due to multi-collinearity or redundancy within the variables. In the present study, 58 bioclimatic and environmental variables of Indonesian extent extracted from WorldClim 2.1 are screened to investigate the presence of multi-collinearity or redundancy. From the total 3364 variable pairs per raster resolution, 174 variable pairs were known to be affected by multicollinearity, from which temperature related bioclimatic variables, water vapour pressure and elevation associated variables were highly notable. For all the raster resolutions, bioclimatic variable 2, 3, 4, 15, 18 and 19, as well as slope, aspect, solar radiation for January, April, May, September, wind speed for August and November were found to be non-collinear. While, solar radiation for March and July were found to be non-collinear for 30s, 2.5m and 5m raster resolutions; Wind speed of July was non-collinear for 30s and 2.5m; Solar radiation for February and June were non-collinear for 10m; water vapour pressure for August for 2.5m and wind speed for January was non-collinear for 30s raster resolutions. The results of this study might serve as a convenient reference for investigators of the region for selection of bioclimatic and other environmental variables for conducting ecological niche modeling studies.
{"title":"Filtering multi-collinear predictor variables from multi-resolution rasters of WorldClim 2.1 for Ecological Niche Modeling in Indonesian context","authors":"P. Pradhan, A. Setyawan","doi":"10.13057/asianjfor/r050207","DOIUrl":"https://doi.org/10.13057/asianjfor/r050207","url":null,"abstract":"Abstract. Pradhan P, Setyawan AD. 2021. Filtering multi-collinear predictor variables from multi-resolution rasters of WorldClim 2.1 for Ecological Niche Modeling in Indonesian context. Asian J For 5: 111-122. WorldClim is one of the popular environmental datasets which hosts multi-resolution interpolated gridded climate raster surfaces and derived bioclimatic variables for both the immediate past, present and future scenarios. Bioclimatic variables along with other environmental factors like solar radiation, wind speed, water vapour pressure etc. have been used as primary set of explanatory variables for mapping and spatial modeling of many biological processes, including defining environmental niche of a species and identifying potential areas for its distribution through machine learning methods like Ecological Niche Modeling or Species Distribution Modeling or Habitat Suitability Modeling. However, the interpolated explanatory datasets are known to cause over-fitting of the models mainly due to multi-collinearity or redundancy within the variables. In the present study, 58 bioclimatic and environmental variables of Indonesian extent extracted from WorldClim 2.1 are screened to investigate the presence of multi-collinearity or redundancy. From the total 3364 variable pairs per raster resolution, 174 variable pairs were known to be affected by multicollinearity, from which temperature related bioclimatic variables, water vapour pressure and elevation associated variables were highly notable. For all the raster resolutions, bioclimatic variable 2, 3, 4, 15, 18 and 19, as well as slope, aspect, solar radiation for January, April, May, September, wind speed for August and November were found to be non-collinear. While, solar radiation for March and July were found to be non-collinear for 30s, 2.5m and 5m raster resolutions; Wind speed of July was non-collinear for 30s and 2.5m; Solar radiation for February and June were non-collinear for 10m; water vapour pressure for August for 2.5m and wind speed for January was non-collinear for 30s raster resolutions. The results of this study might serve as a convenient reference for investigators of the region for selection of bioclimatic and other environmental variables for conducting ecological niche modeling studies.","PeriodicalId":115036,"journal":{"name":"Asian Journal of Forestry","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117007632","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}
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