黄土高原土壤抗蚀性研究

A Study on Soil Antierodibility in Loess Plateau

土壤抗蚀性是评定土壤抵抗侵蚀能力的重要参数之一，历来为人们所重视。该文根据大量实例资料对黄土高原土壤抗蚀性基本特点进行了分析，认为影响黄土高原土壤抗蚀性的主导因子是腐殖质及粘粒含量；水稳性团粒含量是反映黄土高原土壤抗蚀性的最佳指标；黄土高原土壤抗蚀性可根据土壤腐殖质含量和水稳性团粒含量分为６级；黄土高原土壤抗蚀性的地域分异是东南部最强、西部居中、而北部最弱。

The antierodibility of soil is one of important indexes for evaluating soil erosion,it is at-tached great importance by soil conservation scientists. This paper explain the main characteristicsof soil antierodibility in loess plateau based on the data determined,and give main results as follow.Content of organic matter and clay in soil are dominate facters which impact on soil antierodibility inloess plateau. The best index to reflect soil antierodibility in loess plateau is content of waterstableaggregate in soil.Soil antierodibility in loess plateau can be divided into six group,according to con-tent of organic matter and waterstable aggragate. In loess plateau,the soil antierodibility is strongin southwest region,is moderate in west region,and is weakest in north region.