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允许土壤流失量与合理土壤流失量
引用本文:张信宝,焦菊英,贺秀斌,文安邦,何永彬,张云奇,龙翼.允许土壤流失量与合理土壤流失量[J].中国水土保持科学,2007,5(2):114-116.
作者姓名:张信宝  焦菊英  贺秀斌  文安邦  何永彬  张云奇  龙翼
作者单位:1. 中国科学院,水利部,成都山地灾害与环境研究所,610041,成都;中国科学院,水利部,水土保持研究所
2. 中国科学院,水利部,水土保持研究所
3. 中国科学院,水利部,成都山地灾害与环境研究所,610041,成都
4. 中国科学院,水利部,成都山地灾害与环境研究所,610041,成都;中国科学院研究生院,100039,北京
基金项目:中国科学院知识创新工程项目;国家重点基础研究发展计划(973计划);中国科学院水利部水土保持研究所国家重点实验室基金
摘    要: 为确定防治农田土壤侵蚀的标准,20世纪中叶美国土壤学家首先提出了“允许土壤流失量”的概念,之后这一概念又延伸应用到流域和区域土壤侵蚀评价。“允许土壤流失量”的概念在全球,包括在中国得到了广泛的应用。随着土壤侵蚀及相关学科的发展,特别是全球变化研究的深入,可持续发展及健康河流理念的提出及水土保持实践中遇到的新挑战,“允许土壤流失量”的科学性和实用性方面存在的缺陷逐渐显现出来。本文在简要介绍“允许土壤流失量”由来的基础上,着重讨论“允许土壤流失量”存在的问题,并提出“合理土壤流失量”的概念及其确定的原则与方法。

关 键 词:允许土壤流失量  缺陷  合理土壤流失量
修稿时间:2006-11-072007-01-04

Soil loss tolerance and reasonable soil loss
Zhang Xinbao,Jiao Juying,He Xiubin,Wen Anbang,He Yongbin,Zhang Yunqi,Long Yi.Soil loss tolerance and reasonable soil loss[J].Science of Soil and Water Conservation,2007,5(2):114-116.
Authors:Zhang Xinbao  Jiao Juying  He Xiubin  Wen Anbang  He Yongbin  Zhang Yunqi  Long Yi
Institution:1.Institute of Mountain Hazards and Environment,CAS &; MWR,610041,Chengdu;2.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau,Institute of Soil and Water Conservation,CAS &; MWR,712100,Yangling,Shaanxi;3.Graduate School,CAS,100039,Beijing:China
Abstract:To establish a standard for preventing soil erosion on cultivated land,soil scientists in USA proposed firstly the concept of Soil Loss Tolerance,then the concept has been applied for evaluating soil erosion risk in a watershed or a region.The concept of soil loss tolerance has been widely used over the world as well as in China.As progressing of researches in soil erosion and relevant subjects,particularly,global changes,the appearing of concepts of sustainable development and rivers health,the shortages of "soil loss tolerance" in scientific concept as well as in practice have gradually appeared.In this paper,the history of the soil loss tolerance is briefly introduced,then the shortages of the term are discussed,finally the concept of reasonable soil loss is introduced and the principle and methods for determining its standard are proposed.
Keywords:soil loss tolerance  shortages  reasonable soil loss
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