People's perception and socioeconomic determinants of soil erosion: A case study of Samanalawewa watershed, Sri Lanka

CORC > 昆明植物研究所 > 中国科学院昆明植物研究所 > 资源植物与生物技术所级重点实验室

	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
刊名	INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH
	2010-12-01
卷号	25 期号:4 页码:323-339
关键词	Soil Erosion People Perception Determinants Of Soil Erosion Conservation Measures Sri Lanka
ISSN号	1001-6279
通讯作者	st105967@ait.ac.th
文献子类	Article
英文摘要	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.
学科主题	Environmental Sciences ; Water Resources
WOS关键词	CONSERVATION PRACTICES ; FARMERS ; HIGHLANDS ; DECISION ; CHINA ; RIVER
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
语种	英语
WOS记录号	WOS:000286068100001
资助机构	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.
公开日期	2011-12-06
内容类型	期刊论文
源URL	[http://ir.kib.ac.cn:8080/handle/151853/2337]
专题	昆明植物研究所_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
推荐引用方式 GB/T 7714	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.