中文摘要：

云南金沙江流域是长江中上游水土流失最严重的区域。本项研究以“通用土壤流失方程”(USLE)为蓝本,运用小区实验等手段,综合分析了各个侵蚀因子,建立了云南金沙江流域土壤流失方程A=R·K·LS·c·P,并确定了方程中诸因子的求算方法和数值,以及该流域土壤允许流失量,为方程的应用提供了基本的技术数据。同时,还进行了方程的检验,方程计算值与小区实测值的相对误差在6.3％以下,表明该方程在实际应用中是可靠的。该方程的建立,可为云南金沙江流域预测预报土壤侵蚀,制定土地合理利用规划方案、水土保持措施和土地生态安全格局提供了一套可靠的科学方法和依据。

英文摘要：

Soil erosion in Jinsha River Basin of Yunnan Province is very serious, and the Basin is a major region of ecological construction planning in China. The study takes universal soil loss equation (USLE) as original version, and analyses all factors of soil erosion in the Basin by means of the statistical analysis of the experimental data measured on experimental spots. As a result, the soil loss equation in Jinsha River Basin of Yunnan Province has been developed as follows: A = R·K·LS·C·P. The algorithm and ...