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首页> 外文期刊>Journal of food, agriculture & environment >Estimation of soil erosion in the Three Gorges Reservoir Area of China usingRUSLE, remote sensing and GIS
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Estimation of soil erosion in the Three Gorges Reservoir Area of China usingRUSLE, remote sensing and GIS

机译：基于RUSLE，遥感和GIS的中国三峡库区水土流失估算。

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Soil erosion by water is one of the most critical environmental hazards in the Three Gorges Reservoir Area (TGRA) in China, where authorities have created the largest water conservancy project in the world. Quantifying the amount and the spatial distribution of erosion over large areas is essential for the effective implementation of conservation efforts. This study integrates the Revised Universal Soil Loss Equation (RUSLE) with remote sensing and GIS to estimate soil loss and identify risk erosionareas in the Three Gorges Reservoir Area. The average soil erosion rate in the TGRA estimated by RUSLE is 32.80 t ha1 yr1, and the total amount of actual soil loss amounts to 1.891x10" t yr1. According to the Chinese standard classification and gradationof soil erosion, zones experiencing slight, low, medium, high, very high and extreme erosion potential, respectively, constitute 38.70%, 29.48%, 12.77%, 7.49%, 7.14% and4.42% of surveyed area. About 76.75% of the total soil loss is concentrated in 19.05%of the total area, which represents zones of high to extreme erosion potential. The most severe erosion risk typically occurs in critical regions such as ridges and steep slopes. Consequently, there is an urgent need for intervention strategies in orderto effectively reduce soil erosion in these specific areas.
机译：在中国的三峡水库地区（TGRA），水土流失是最严重的环境危害之一，有关当局已在此建立了世界上最大的水利工程。量化大面积侵蚀的数量和空间分布对于有效实施保护工作至关重要。这项研究将修订后的通用土壤流失方程（RUSLE）与遥感和GIS集成在一起，以估算三峡库区的土壤流失并确定风险侵蚀区。 RUSLE估算的TGRA中的平均土壤侵蚀速率为32.80 t ha1 yr1，实际土壤流失总量为1.891x10“ t yr1。根据中国土壤侵蚀的标准分类和等级，区域出现轻微，低度，中，高，极高和极强的侵蚀潜力分别占调查面积的38.70％，29.48％，12.77％，7.49％，7.14％和4.42％，约76.75％的土壤流失集中在19.05％的土壤中总面积，代表着潜在的高到极度侵蚀的区域，最严重的侵蚀风险通常发生在关键区域，例如山脊和陡坡，因此，迫切需要采取干预策略，以有效减少这些特定地区的土壤侵蚀地区。

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