Study on Soil Loss Equation of Cultivated Slopeland in Northeast Mountain Region of Yunnan Province

Yang Zisheng

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Study on Soil Loss Equation of Cultivated Slopeland in Northeast Mountain Region of Yunnan Province

- Study on Soil Loss Equation of Cultivated Slopeland in Northeast Mountain Region of Yunnan Province
- Bulletin of Soiland Water Conservation Vol. 18, Issue 1, Pages: 1-9(1999)
- 作者机构：
  
  云南大学地球科学系,昆明市,650091
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：1999
- 稿件说明：
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Yang Zisheng. Study on Soil Loss Equation of Cultivated Slopeland in Northeast Mountain Region of Yunnan Province[J]. Bulletin of Soiland Water Conservation, 1999, 18(1): 1-9.
DOI：

Yang Zisheng. Study on Soil Loss Equation of Cultivated Slopeland in Northeast Mountain Region of Yunnan Province[J]. Bulletin of Soiland Water Conservation, 1999, 18(1): 1-9. DOI：

摘要

滇东北山区是云南省“长江上游水土保持重点防治工程”治理计划的重点区域

该区域水土流失的主体是坡耕地。该项研究通过对32个试验小区连续3a实测数据的统计分析

建立了滇东北山区坡耕地土壤流失方程A=R.K.LS.C.P;并确定了方程中诸因子的求算方法和数值

以及滇东北山区土壤允许流失量

为方程的应用提供了基本的技术数据。并进行了方程的验证

方程计算值与实测值的误差在6%以下

表明该方程在实际应用中具有很大的可靠性。该方程的建立

为滇东北山区预测预报土壤侵蚀

制定土地合理利用规划方案和水土保持措施

实行可持续发展战略提供了一套可靠的科学方法和依据。

Abstract

The northeast mountain region of Yunnan province is a major region of soil and water conservation of the upper Yangtzeriver in Yunnan province

the chief part of soil erosion in this region is cultivated slopeland. By means of the statistical analysis of the experimental data measured on 32 experimental spots over three years continuo usly

the soil loss equation of cultivated slopeland in northeast mountain region of Yunnan province has been developed as follow s: A = R·K·LS·C·P . The algo rithm and data for every factor in the equation as well as the capacity for permitable loss of soil in northeast mountain region of Yunnan province have been determined

which provided the fundamental technological data for future use of the equation. At the same time

the author has made a test to the equation

the results indicate that the error of data by calculating does not exceed 6% when compared with the practical experimental data

which proved the equation may be very reliable in futureapplication. The development of the equation may provide a series of dependable scientific methods and bases for predicting soil erosion

mapping out the rational utilization planning of land and the countermeasures of soil and water conservation

and carrying out the strategy of sustainable develo pment in northeast mountain region of Yunnan province.

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