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Proceedings Paper

Grade agricultural soil loss amount by integrating GIS technology and USLE in upstream of Yangtze River, China
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Paper Abstract

The Chinese government established the Natural Forest Conservation Program(NFCP) in 1998. As nationwide engineering, one of the most important tasks of NFCP was to mandatory conversion of marginal farmlands to forestland or grassland(reforestation or afforestation in farmlands) where topographical slope steepness was more than 25. In order to quantitatively study the grade of agriculture soil loss amount and soil erosion volume spatio-temporal variation, as well as to guide the process of the conversion of farmlands to forest in upstream of Yangtze Rivers, western of Sichuan province in China. The research analyzed how to calculate K, S, L, C and P factors of Universal Soil Loss Equation(USLE) on the base of considering terrain, climate and characters of agricultural soil. The methods can adapt to the variation terrain of the dry valley region in western Sichuan province. As believed the reforestation was a long-term engineering, we thought the planning of reforest farmlands is a temporal decision, which should be considered that where should be afforested at once and where should afforested in abeyance on the basis of grading soil loss amount and the others conditions of reforesting farmland. Grading agricultural soil loss amount would be beneficial to program a feasible plan in the conversation of farmlands to forest.

Paper Details

Date Published: 1 September 2005
PDF: 4 pages
Proc. SPIE 5884, Remote Sensing and Modeling of Ecosystems for Sustainability II, 58840O (1 September 2005); doi: 10.1117/12.614878
Show Author Affiliations
Shi-bo Fang, Institute of Botany, CAS (China)
Wu-nian Yang, Chengdu Univ. of Technology (China)
Zhiqiang Gao, Institute of Geographical Science and Natural Resources Research, CAS (China)

Published in SPIE Proceedings Vol. 5884:
Remote Sensing and Modeling of Ecosystems for Sustainability II
Wei Gao; David R. Shaw, Editor(s)

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