首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Forest Cover Change,Physiography, Local Economy,and Institutions in a Mountain Watershed in Nepal
Authors:Ambika P Gautam  Ganesh P Shivakoti  Edward L Webb
Institution:(1) School of Environment, Resources and Development, Asian Institute of Technology, P.O. Box 4 Klong Luang Pathum Thani 12120, Thailand
Abstract:This study assessed changes in forest cover in a mountain watershed in central Nepal between 1976 and 2000 by comparing classified satellite images coupled by GIS analyses, and examined the association of forest change with major physiographic, economic, and local forest governance parameters. The results showed an increase in forested area (forest plus shrublands) by 7.6% during 1976–2000. Forest dynamism (changes including improvement, deterioration, gain, and loss) was highest in low-elevation, south-facing and less-steep slopes that were closer to roads. Proportionately the highest net improvement and gain to forested area also took place in those locations. Forest degradation occurred at twice the rate of improvement in high elevation areas (> 2300 m). Forests located in urban and semiurban areas (i.e., a market-oriented economy) experienced a proportionately higher amount of net improvement and gain than forests in rural areas (i.e., a subsistence economy). Among the three governance arrangements, proportionately the highest net improvement and gain took place in semigovernment forests (forested area legally under the forest department but with de facto control and claim of ownership by local communities and/or municipality) followed by formalized community forests (including leasehold). Government forests, which were mostly found in the southern high mountains and had virtually open access, remained relatively stable during the study period. Over 50% of the watershed forests have not come under community-based management despite favorable policy and more than two decades of government intervention with continuous donor support. The findings indicate that the present ldquoone size fits allrdquo approach of community forest handover policy in Nepal needs rethinking to accommodate biophysical and socioeconomic variations across the country.
Keywords:Land cover changes  Remote sensing  GIS  Institutions  Land tenure  Nepal
本文献已被 PubMed SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号