People's perception and socioeconomic determinants of soil erosion: A case study of Samanalawewa watershed, Sri Lanka
Udayakumar, E. P. N.1; Shrestha, R. P.1; Samarakoon, L.2; Schmidt-Vogt, D.3
2010-12-01
发表期刊INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH
ISSN1001-6279
卷号25期号:4页码:323-339
摘要Though soil erosion is an important concern in Sri Lanka, there is a dearth of baseline information on soil erosion in many of its watersheds, which obstructs monitoring of soil erosion and mitigating its effects. In order to assess soil erosion in a critical watershed and to identify its determinants, the Samanalawewa watershed, which contains one of the main hydropower generating reservoirs in Sri Lanka, was selected for this study. Remote-sensing (RS) and geographic information system (GIS) based modeling as well as field experiments were employed to assess and map soil erosion rates. Results indicated that the current rate of soil erosion ranges from 0 to 289 t/ha/yr, and that the average rate of soil erosion has been declining from 20 to 4 t/ha/yr over a period from 1986 to 2008. The current rate of soil erosion is, however, still about 14 to 33 times greater than the natural soil generation rate. Socioeconomic factors and peoples' perception of soil erosion and soil conservation measures were examined using data collected through a household survey. Multiple regression analysis with eighteen covariates of socioeconomic characteristics yielded eleven socioeconomic variables, viz. household size, farm labor, education, land tenure, conservation cost, training, committee membership, professional competencies, income, distance, and financial capital as the predictor variables of soil erosion. Farmers identified improper soil and crop management practices as the major causes of erosion. The adoption of conservation measures, their effectiveness, and their impact on ecosystem services were also examined.
关键词Soil Erosion People Perception Determinants Of Soil Erosion Conservation Measures Sri Lanka
资助信息The financial support of the Improving Relevance and Quality of Undergraduate Education (IRQUE) - a World Bank Project implemented by the Sabaragamuwa University of Sri Lanka to carry out the first author's doctoral studies at the Asian Institute of Technology (AIT) is highly acknowledged. Thanks are also due to the Geoinformatics Centre of AIT, Thailand for providing ALOS data, and the Department of Survey of Sri Lanka for elevation data of the study area. Finally, the authors would like to thank two anonymous reviewers for their constructive comments on the manuscript.
学科领域Environmental Sciences ; Water Resources
收录类别SCI
语种英语
WOS研究方向Environmental Sciences & Ecology ; Water Resources
WOS类目Environmental Sciences ; Water Resources
WOS记录号WOS:000286068100001
引用统计
被引频次:9[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/2337
专题资源植物与生物技术所级重点实验室
作者单位1.Asian Inst Technol, Sch Environm Resources & Dev, Nat Resource Management Field Study, Klongluang 12120, Pathumthani, Thailand
2.Asian Inst Technol, Geoinformat Ctr, Klongluang 12120, Pathumthani, Thailand
3.Chinese Acad Sci, Kunming Inst Bot, Ctr Mt Ecosyst Studies, Kunming 650204, Peoples R China
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Udayakumar, E. P. N.,Shrestha, R. P.,Samarakoon, L.,et al. People's perception and socioeconomic determinants of soil erosion: A case study of Samanalawewa watershed, Sri Lanka[J]. INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH,2010,25(4):323-339.
APA Udayakumar, E. P. N.,Shrestha, R. P.,Samarakoon, L.,&Schmidt-Vogt, D..(2010).People's perception and socioeconomic determinants of soil erosion: A case study of Samanalawewa watershed, Sri Lanka.INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH,25(4),323-339.
MLA Udayakumar, E. P. N.,et al."People's perception and socioeconomic determinants of soil erosion: A case study of Samanalawewa watershed, Sri Lanka".INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH 25.4(2010):323-339.
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