期刊论文

Quantitative Study on Soil Erosion in Upper Reaches of Chaohu Lake

中文

资源环境与工程

1671-1211

2008

22

5

547-551

10.16536/j.cnki.issn.1671-1211.2008.05.019

(DG0619):华中师大丹桂计划

本校为第一机构

以地理信息系统(GIS)、遥感(RS)和通用土壤流失方程(USLE)为基础,根据巢湖上游区域舒城县1987年和2000年遥感影像解译数据、统计资料等,确定方程中各因子,对舒城县两个时段的土壤流失量进行定量化分析,评价该区不同土地利用变化对土壤流失的影响,进行水土流失的定量评价.结果表明,舒城县1987年和2000年平均土壤侵蚀量分别为91.216 3×10>4 t/年、92.675 1×104 t/年,土壤年侵蚀量分别为430.30 t/km2、440.09 t/km2,整个流域属于轻度侵蚀区域.

According to interpretation and statistical data of remote sensing image in 1987 and 2000 of Shucheng county which is located in upper reaches of Chaohu Lake, based on GIS, RS and USLE, the authors definite all factors of equation in order to make quantitative analysis of soil loss in two time-interval, evaluate the effect of different land use on soil loss, and proceed with the quantitative evaluation of soil and water loss. The results show that the average soil erosion is 91. 216 3×10^4t/a in 1987 and 92. 675 1 ×10^4t/a in 2000; the annual...