Banko janakari最新文献

{"title":"Effectiveness of control measures of Mikania micrantha on grassland: a case study from grassland in Sauraha area of Chitwan National Park","authors":"U. Aryal, B. H. Wagle, B. Lamichhane, A. Parajuli, P. Thapa","doi":"10.3126/BANKO.V27I3.20559","DOIUrl":"https://doi.org/10.3126/BANKO.V27I3.20559","url":null,"abstract":"The spread of Mikania micrantha is causing a serious threat to native ecosystem in the tropical and sub-tropical parts of Nepal. The main objective of the study was to analyse the effectiveness of different control measures applied in the grasslands of Chitwan National Park (CNP) by comparing number and coverage of M. micrantha and native grass species. The three experimental sites were grassland of the CNP. These sites were delineated from Etrex 30, Global Positioning System (GPS) and GIS 10.3.2 in April, 2013. A block with size of 100 m x 100 m was separated by fire line on all sides for each treatment in each site. Systematic sampling with random start was used to establish sample plots within each block. Six sample plots were established in each block. The size of each plot was 2 m x 0.4 m (0.8 m2). The distance between one sample plot to another sample plot was 40 m. Three treatments applied in three blocks of each site were controlled fire, manual cutting and control (no treatment).Seedlings of M. micrantha and native grasses were counted and their coverage assessed in each plot. The coverage and number of native grass species were higher in controlled fire plot than in manual cutting and control plots. The study concludes that controlled fire is better than manual cutting and control treatments for the management of grassland. This study will help to different stakeholders to control its outreach, make polices, proper management of grasslands that are being affected by the invasion of M. micrantha. Banko JanakariA Journal of Forestry Information for Nepal Special Issue No. 4, 2018, Page: 144-149 ","PeriodicalId":89659,"journal":{"name":"Banko janakari","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3126/BANKO.V27I3.20559","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46913746","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}

{"title":"Silvicultural madness: a case from the “Scientific Forestry” initiative in the community forests of Nepal","authors":"B. Basnyat, T. Treue, R. Pokharel","doi":"10.3126/BANKO.V27I3.20542","DOIUrl":"https://doi.org/10.3126/BANKO.V27I3.20542","url":null,"abstract":"Following a case study approach, this paper explains how scientific forest management plans were developed and implemented in community forests of a mid-hill district in Nepal. Field observations were carried over a period of two years (December 2014 to December 2016) in two community forests. User group members, forest officials, forest technicians and executive committee members were consulted. The plans were prepared simply by compiling the administrative requirements where management prescriptions were defined either based on forest technicians’ knowledge or taken directly from the guidelines with little reference to the actual site quality, management objectives, and forest stand conditions. Apart from harvesting of trees, users hardly implemented the plans’ silvicultural prescriptions and forest restoration activities. Moreover, forest officials administratively reduced the number of trees that users could harvest to around half of what the plans allow. Accordingly, forest user groups face a paradoxical forest administration that promotes timber harvesting according to so-called scientific principles, which it then brushes aside to satisfy bureaucratic demands. The study concludes that the concept of scientific forestry is merely used as a “brand” or a seemingly sound “narrative” in community forestry, while it is of little practical relevance because administrative decisions are more powerful in guiding forest management decisions. Hence, the study suggests a replacement of the current schizophrenic mix of so-called “scientific forest management” and sweeping administrative orders with adaptive management practices in community forests. Banko JanakariA Journal of Forestry Information for Nepal Special Issue No. 4, 2018, Page : 54-64","PeriodicalId":89659,"journal":{"name":"Banko janakari","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3126/BANKO.V27I3.20542","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46744237","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}

{"title":"Survival status of young plantations in Parbat district, Nepal","authors":"G. Paudel, R. Acharya","doi":"10.3126/BANKO.V27I3.20538","DOIUrl":"https://doi.org/10.3126/BANKO.V27I3.20538","url":null,"abstract":"In Nepal, a lot of resources have been invested for establishing plantations. Due to lack of assessment of the survival status of planted seedlings, we have inadequate information about how many successful plantations that we have established in the country. This study was carried out in fourteen community forests (CFs) of Parbat district with the aim of analyzing survival status of the planted seedlings. Plantation was done in June/July 2015 and total count of the seedlings was done in June 2016. In the studied CFs, eleven species were planted comprising 20,172 seedlings in which 58.57% seedlings were survived at the end of first year. The cause of seedling mortality was identified through observation, judgment and interaction with local people. The main causes of seedling mortality (52%) were due to small size and unhealthy seedlings, lack of care during transportation and handling. Forest fire, weeds, drought, disease and grazing were found to be responsible for the mortality of 17%, 12%, 10%, 7% and 2% seedlings, respectively. Regular monitoring of plantation area with the involvement of local community members is recommended for policy makers and assessment of survival rate of different species in different ecological regions is recommended for researchers. Banko JanakariA Journal of Forestry Information for Nepal Special Issue No. 4, 2018, Page : 21-26 ","PeriodicalId":89659,"journal":{"name":"Banko janakari","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3126/BANKO.V27I3.20538","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45939509","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}

{"title":"Silviculture and community forestry: looking backwards, looking forwards","authors":"D. Gilmour","doi":"10.3126/BANKO.V27I3.20536","DOIUrl":"https://doi.org/10.3126/BANKO.V27I3.20536","url":null,"abstract":"Silviculture is about the deliberate manipulation of a forest to achieve defined objectives. It can be thought of as the art of producing and tending a forest. The notion of “appropriate” silviculture is very important when considering silviculture for community forests because silvicultural approaches and prescriptions need to be appropriate for local users while also ensuring that they promote the long term sustainability of the forest. Experience suggests that not all community forests require the application of sophisticated silvicultural regimes or the use of inventory data to schedule yields. Many can be managed perfectly well by the application of very simple silvicultural regimes and little or no need to collect inventory data. The needs of the most complex situation (sophisticated silvicultural system and inventory) should not be the model for all community forestry silviculture. At best, conventional silvicultural regimes and inventory practices require major revision for community forestry. It is clear that community forestry will achieve its full potential only if a holistic view is taken and a number of enabling conditionalities are met. These include: secure tenure, an enabling regulatory framework, strong governance, viable technology (including appropriate silviculture), adequate market knowledge and a supportive bureaucracy. These all need to be present for community forestry to operate at its full potential to deliver the biophysical and socio-economic outcomes that are expected of it. Viable technology, including appropriate silviculture informed by good science, is one of these important conditionalities but it is not the only one. Sustainable outcomes require much more than the application of technical forestry. Banko JanakariA Journal of Forestry Information for Nepal Special Issue No. 4, 2018, Page : 6-14 ","PeriodicalId":89659,"journal":{"name":"Banko janakari","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3126/BANKO.V27I3.20536","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44128442","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}

{"title":"Applications of single-tree selection guideline following a DBq approach on Nepal’s community forests","authors":"E. Cedamon, G. Paudel, M. Basyal, I. Nuberg, K. Shrestha","doi":"10.3126/BANKO.V27I3.20555","DOIUrl":"https://doi.org/10.3126/BANKO.V27I3.20555","url":null,"abstract":"There is growing interest by forest users, government forest officers and policy makers on maximising forest goods and livelihood provisions from community forestry in a sustainable manner. However, the way several mature community forests are currently managed based on selection, e.g. negative thinning and crown thinning, is questionable as it results to decline in forest stock, timber quality and regeneration. To assist forest users in managing their community forests, an action research was implemented in Kavre and Lamjung to manage planted Pine (Pinus spp.) and naturally regenerated Sal (Shorea robusta) through selection system. This paper describes the q-factor and its relevance for sustainable community forest management in Nepal. The simple guideline for selection system introduced to 30 community forest users groups in six sites are presented for wider adoption and policy recommendation.Banko JanakariA Journal of Forestry Information for NepalSpecial Issue No. 4, 2018, Page: 104-112 ","PeriodicalId":89659,"journal":{"name":"Banko janakari","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3126/BANKO.V27I3.20555","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43121447","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}

{"title":"Linking land use and forestry transition with depopulation in rural Nepal","authors":"M. Poudel, G. Kafle, K. Khanal, S. Dhungana, B. Oli, A. Dhakal, U. Acharya","doi":"10.3126/BANKO.V27I3.20558","DOIUrl":"https://doi.org/10.3126/BANKO.V27I3.20558","url":null,"abstract":"Migration borne depopulation has been emerging as a new dimension of conservation challenges. Existing body of knowledge, however, lack in-depth understanding of this emerging dynamics of depopulation and its forestry implications. Aiming to analyze implications of migration borne land use transition, this study investigated the nature and impacts of migration in rural communities involved in managing community forestry and other tree resources This study was grounded in the experiences and perceptions of community forest users groups in Parbat and Lamjung districts and applied a pragmatic approach to social science, involving the collection of both qualitative and quantitative data. A total of 218 semi-structured interviews, two focus group discussions and three stakeholders’ consultations were conducted. Spatial changes in land use were analyzed using Landsat images of 2000 and 2016 and other existing land use maps.The study found decreasing trend of population growth and identified out-migration of local youth as the main driver. Identified underpinning causes motivating for migration include desire of higher education, employment and resettlement, poverty and poor access to education, markets and other opportunities. This study found negative correlation between migration and farming activities but positive correlation between forest and tree coverage. Forests and other woodland increased but none forest area, most of which were farmlands, decreased. Community forests were getting denser but they lack proper management, abandoned farmlands were turning into bushes, which have increased the risk of forest fire. This study showed very poor understanding of REDD+ and related issues at community level and suggests substantial gaps in policies and procedures to translate migration borne land use transition into opportunities for generating multiple benefits including carbon finance as an additional benefit. Banko JanakariA Journal of Forestry Information for Nepal Special Issue No. 4, 2018, Page: 130-143 ","PeriodicalId":89659,"journal":{"name":"Banko janakari","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3126/BANKO.V27I3.20558","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45888649","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}

{"title":"Modeling taper and volume of Sal (Shorea robusta Gaertn. f.) trees in the western Terai region of Nepal","authors":"R. Silwal, S. Baral, Bir Bahadur Khanal Chhetri","doi":"10.3126/BANKO.V27I3.20544","DOIUrl":"https://doi.org/10.3126/BANKO.V27I3.20544","url":null,"abstract":"Volume and taper equations are used for estimating timber volume and biomass of a tree. Despite their usefulness, precise and site specific equations are still lacking for commercially important tree species in Nepal. The study was carried out at Chandak Chatiya Mahila Community Forest in Bardia district and Lumbini Collaborative Forest of Saljhandi in Rupandehi district in western Terai of Nepal. A destructive sampling method was used and selected fifteen Sal trees (Shorea robusta Gaertn. f.) from Saljhandi (site 1) and eighteen trees from Bagnaha (site 2) randomly to calibrate an individual tree volume and a stem taper function. At first, a non-linear stem taper function was calibrated using stem diameters outside bark at different heights above ground as response variable and D (diameter at breast height), H (total height), h (height of interest) as predictors. Then, effect of crown characteristics on stem taper was evaluated. As stem HCB (height to crown base) was found to affect stem taper, its usefulness in existing stem volume equation was tested. Empirical relationships between V (stem volume) as a response variable and D, H, HCB and sites in Bardia and Rupandehi districts as predictors were established using a linear mixed modeling approach. Our result showed that, instead of H, use of HCB in stem volume equation increased model prediction accuracy and reduced prediction bias. Applicability of the suggested models for predicting individual S. robusta tree volume and stem taper is discussed. Banko JanakariA Journal of Forestry Information for Nepal Special Issue No. 4, 2018, Page: 76-83","PeriodicalId":89659,"journal":{"name":"Banko janakari","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3126/BANKO.V27I3.20544","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47638809","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}

{"title":"Application of silvicultural system, yield regulation and thinning practices in natural forests: case study from western Terai","authors":"V. R. Subedi, K. Bhatta, I. Poudel, P. Bhattarai","doi":"10.3126/BANKO.V27I3.20553","DOIUrl":"https://doi.org/10.3126/BANKO.V27I3.20553","url":null,"abstract":"Harvesting of mature forest crop, regenerating the harvested area and tending of young crop are major silvicultural operations in forest management. Silvicultural system provides a framework for carrying out these silvicultural operations in a systematic manner. Yield is the annual amount of produce that can be realized sustainably. Similarly, thinning is the principal tending operation carried out in immature crop, is more often complicated in natural forest. This paper attempts to review silvicultural system applied in Terai region of Nepal under scientific forest management in order to regulate yield and to suggest new methods of thinning in natural forests. The study was conducted in Buddha Shanti Collaborative Forest in Nawalparasi district, western Terai Nepal. Data related to implementation status of CFM Plan were collected through field observation. Harvesting data were collected during harvesting operation. The collected harvesting data were analyzed for yield regulation. Irregular shelter-wood system was applied in Buddha Shanti CFM. The applied method of yield regulation is combination of area and stem control. Area control is applied for regeneration period. Annual harvest is controlled by number of stems. Tree harvesting area is fixed for ten years and annual harvesting amount is fixed by number of tree. In this method annual numbers of trees for harvesting are fixed. Total enumeration method was applied for thinning to find out the most frequent size of pole in selected sub compartment. During the enumeration process; distance between the every stem and fore bearing was also recorded with the help of laser distance meter and compass. A stem map was prepared with the help of Arc-GIS and the grid distance was fixed based on the most frequent size of stem. Then, one stem from each grid was selected for retaining after harvesting and remaining stems were cut down. This method provides appropriate guideline for implementing it objectively by reducing subjective judgment and provide more systematic method for thinning. The field practices of application of silvicultural system and yield regulation were found in accordance to the scientific forest management Procedures 2014 in Buddha Shanti CFM. The method for thinning applied in the CFM was found applicable to other similar type of forests. Banko JanakariA Journal of Forestry Information for Nepal Special Issue No. 4, 2018, Page: 92-97","PeriodicalId":89659,"journal":{"name":"Banko janakari","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3126/BANKO.V27I3.20553","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49171860","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}

{"title":"An assessment of the impact of silviculture and forest management regimes to forest cover change in the Churia region during 1992 to 2014","authors":"B. Pokharel, D. Uprety, R. Niraula, Prabhat Pokharel","doi":"10.3126/BANKO.V27I3.20540","DOIUrl":"https://doi.org/10.3126/BANKO.V27I3.20540","url":null,"abstract":"A study was conducted in the Churia region in 2014 to assess the change in forest cover as an outcome of the performance of various forest management regimes and silvicultural practices with the main objective to find the gap between those two. Geographic Information System (GIS) and Remote Sensing (RS) were used to compare the satellite imageries for the period of 1992 to 2014 in order to analyse the state of forest cover change. The demarcation of community forest boundaries was conducted based on available boundary maps and transferred to Google earth and GIS platform. Results showed that overall forest cover in the Churia region was increased by 7500 ha (1%) in 22 years, i.e. 1.35 million ha (76%) in 1992 to 1.36 million ha (77%) in 2014. The rate of deforestation in the Churia region was reduced as compared to the national average. However, degradation of landscape was visible at riverbeds and cultivation lands close to the riverbeds. It was also found that the area of dense forest was increased by 42,000 ha, whereas the area covered by bushes and grassland was reduced by 39,000 ha. The study further showed that there was a decline in cultivated land by 20,000 ha. Comparing the forest cover change in community forests with that of other management regimes, silvicultural practices in community forest areas have brought relatively better positive changes in the forest condition. It may be due to periodic silviculture operations carried out collectively by local communities. In the assessment, however, various elements of tenure rights and responsibilities of community, government and private forest and tree owners were identified and key silvicultural practices adopted by these regimes were highlighted as the drivers of positive or negative outcomes of forest cover change. Banko JanakariA Journal of Forestry Information for Nepal Special Issue No. 4, 2018, Page : 36-44 ","PeriodicalId":89659,"journal":{"name":"Banko janakari","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3126/BANKO.V27I3.20540","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69262764","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}

{"title":"Developing local volume tables for three important tree species in Nawalparasi and Kapilvastu districts","authors":"H. L. Shrestha, M. Kafle, K. Khanal, R. Mandal","doi":"10.3126/BANKO.V27I3.20552","DOIUrl":"https://doi.org/10.3126/BANKO.V27I3.20552","url":null,"abstract":"The local volume tables of specific species are very important to estimate the timber volume of standing trees but precise site-specific volume tables are lacking for three important tree species, namely Dalbergia sissoo, Shorea robusta and Terminalia alata. Therefore, this study was carried out to develop local volume tables and determine the form factors of these species using destructive and non-destructive methods. Kapilvastu and Nawalparasi districts were selected for this study. Altogether, 188 vigorous trees were selected for measurement, out of which 156 (52 trees for each species) were from destructive sampling and 32 were standing trees. The data of destructive sampling trees of three species were used in developing the models for under bark timber volume up to 10 and 20 cm top diameters. Thirty two data (12 for S. robusta, 10 for T. alata and for D. sissoo each) of standing trees were used to validate the models of three species. A number of cross sections were made and actual volumes of stem, butt log, other sections and top portion were calculated using cylindrical, Newton’s, Smalian’s and cone formulae, respectively. The cylindrical volume was estimated based on diameter at breast height. The form factor was determined from the ratio of actual and cylindrical volumes. The diameter and height relationship was made and, based on this; the smooth curve was drawn to develop the local volume tables. The results showed that estimated form factor of 10 cm and 20 cm top diameter of selected species varied from 0.50 to 0.69. In addition, local volume tables are developed for stem volume based on diameter under bark. Banko JanakariA Journal of Forestry Information for Nepal Special Issue No. 4, 2018, Page: 84-91 ","PeriodicalId":89659,"journal":{"name":"Banko janakari","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3126/BANKO.V27I3.20552","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42743932","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}