摘要
土壤中植物根系的存在可以增强土壤的抗蚀性，溅蚀量、贯入深度和被崩解的情况等都是土壤抗蚀性的反映。通过对人工添加根系、固有根系和缺少根系三种不同土壤类型，进行的溅蚀、贯入和崩解试验，发现具有植物根系的土壤，其崩解速率远比少根系或缺少根系的土壤为慢，而根系的多少则似乎与溅蚀、贯入不存在明显的关系，后者更多地取决于土壤的颗粒组成特性。
Plant roots within soil can raise resistivity of soil.Splash erosion volume,penetration depth and breaking down condition are indexes expressing soil resistivity.Choosing three different types of soils,soil with plant roots,soil added plant roots and soil without or only a few plant roots,we do a serious of experiments,including splash erosion,penetration and breaking down.It is found that the rate of breaking down of the soil with plant roots is much slower than that of the soil without-plant roots,but the quatities of plant roots within the soil seem no obvious correlation to splash erosion and penetration depth.The latter two depend on characteristics of grain size and compositions of the soil. \ \
出处
《干旱区资源与环境》
CSCD
1999年第3期35-43,共9页
Journal of Arid Land Resources and Environment
基金
国家自然科学基金委员会支持面上基金项目
河北省科委支持重点项目
关键词
植物根系
土壤抗蚀性
降雨
模拟试验
土壤表土
Plant roots,soil erosion-resistance,breaking down,splash erosion,penetration.
