自然资源学报 ›› 1999, Vol. 14 ›› Issue (4): 345-350.doi: 10.11849/zrzyxb.1999.04.010

• 论文 • 上一篇    下一篇

土壤可蚀性及其在侵蚀预报中的应用

刘宝元1, 张科利1, 焦菊英2   

  1. 1. 北京师范大学资源与环境科学系, 教育部环境演变与自然灾害开放研究实验室, 北京 100875;
    2. 中国科学院水土保持研究所, 陕西杨陵 712100
  • 收稿日期:1999-04-20 修回日期:1999-07-20 出版日期:1999-12-25 发布日期:1999-12-25
  • 作者简介:刘宝元(1958-),男,陕西佳县人,博士,教授,博士生导师,主要研究方向为土壤侵蚀和水土保持。
  • 基金资助:

    国家杰出青年科学基金;教育部留学回国人员基金

Soil erodibility and its use in soil erosion prediction model

LIU Bao yuan1, ZHANG Ke li1, JIAO Ju ying2   

  1. 1. Dept.Resources and Environmental Science, Beijing Normal University; Open Research Laboratory of Environmental Changes and Natural Disasters, Ministry of Education, Beijing 100875, China;
    2. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi Province 712100, China
  • Received:1999-04-20 Revised:1999-07-20 Online:1999-12-25 Published:1999-12-25

摘要: 土壤可蚀性是土壤侵蚀预报和土地利用规划的重要参数,国外已有物理意义明确、可操作性强、应用方便的土壤可蚀性定义和指标。国外的指标在我国不适用,而我国又没有这样的指标。在系统全面查阅和分析60多年来已有研究成果的基础上,根据我国具体情况,提出我国土壤可蚀性指标的定义和测定方法,即在15°坡度、20m坡长、清耕休闲地上,单位降雨侵蚀力所引起的土壤流失量。这一标准的确定对规范土壤可蚀性实验研究,促进我国土壤侵蚀预报模型的建立有重要意义

关键词: 土壤, 可蚀性, 抗冲抗蚀性, 侵蚀预报

Abstract: Soil erodibility serves as a major parameter for soil erosion prediction and land use planning.Olson and Wischmeier gave it a very clear definition which has been used in many soil erosion models.However,it is not suitable for China.Based on the review of the 70 years research achievements on soil erodibility,and in light with China's actual conditions on land use as well as the available erosion data,the definition on soil erodibility index and its measurement in China was developed The soil erodibility for China might be defined as the average soil loss per unit of the erosion index from the clear tilled fallow on a plot 20 meters long on a slope of 15° This defi nition may help us for field measurement and Chinese soil erosion prediction model deve lopment.

Key words: erodibility, soil erosion, erosion prediction

中图分类号: 

  • S157