摘要
介绍了测量模型次降雨侵蚀产沙量的烘干法和密度瓶法,并通过不同粒径组泥沙浑水含沙量的对比试验,验证了测量方法的可靠性。针对模型土壤中夹杂着大量粒径较粗的泥沙颗粒的试验,提出进行泥沙粗细分层,然后采用烘干法和密度瓶法相结合的方法来测量次降雨侵蚀产沙量。所介绍的观测方法具有结果可靠且工作效率较高的特点。
The paper introduces the methods of drying and pycnometer for sediment yield of total precipitation erosion of observation model and validates the reliability of the measurement through check tests of sediment concentration with different particle sizes. It puts forward to differentiate the coarse and fine sand and then measure the sediment yield of total precipitation erosion by using the combined method of drying and pycnometer in the light of the soil mixed with large quantity of coarser sand in the model tests. The introduced method has the characteristics of reliable result and higher working efficiency.
出处
《中国水土保持》
北大核心
2007年第1期35-37,共3页
Soil and Water Conservation in China
基金
国家自然科学基金项目(40201008
50339020)
关键词
土壤侵蚀
模型试验
产沙量
测量
soil erosion
model test
sediment yield
measurement
作者简介
徐向舟（1969-），男，浙江龙游县人，副教授，博士，从事水土保持和水环境治理研究。
