安徽农业大学学报2017，Vol.44Issue(3)：465-470,6.DOI:10.13610/j.cnki.1672-352x.20170524.031
用人工模拟降雨研究不同土壤类型的产沙特征
Study on sediment yield characteristics in different soils using simulated rainfall
摘要
Abstract
Three soils in Yining County and Manas County were used as study materials.By using outdoor artificial simulated rainfall experiments,a field investigation and sampling as well as determination of physicochemical properties of soil samples in lab was conducted to compare the erosion characteristics of the three soils.Results showed that:(1) The particle composition and soil organic matter were the main factors influencing the difference in soil erodibility (K).The higher the silt content,the higher the sediment concentration and K value,which meant much easier to cause soil erosion.On the contrast,the higher the clay content in the soil,the smaller the sediment concentration and K value,which meant much easier to produce soil anti-rosion.(2) A correlation analysis showed that the correlation coefficient of runoff rate and sediment yield was 0.56,without a significant difference.(3) The soil organic matter and cumulative total sediment had a significant correlation,with the correlation coefficient of 0.73.(4) By breaking the soil aggregates,we found the three types of soils with ＞2 mm soil aggregates,runoff rate,sediment yield and K value of Gray calcium soil were all the least;while the soils with ＜2 mm soil aggregates,runoff rate,sediment yield and K value of Brown calcium soil were all the least.The anti-erosion of the soil with ＞2 mm soil aggregates was larger than that of the soil with ＜2 mm soil aggregates.关键词
人工模拟降雨/土壤类型/侵蚀特征Key words
artificial simulated rainfall/soil types/erosion characteristics分类
农业科技引用本文复制引用
仲亚婷,张文太,李建贵,黄俊华,张佩佩,张少博..用人工模拟降雨研究不同土壤类型的产沙特征[J].安徽农业大学学报,2017,44(3):465-470,6.基金项目
国家科技支撑计划项目(2014BAC15B03)和新疆农业大学大型仪器设备新功能开发项目共同资助. （2014BAC15B03）
