Soil particle size distribution and its relationship with soil water and salt under mulched drip irrigation in Xinjiang of China

查看全文 作　　者：HU HongChang TIAN FuQiang HU [1]HePing

机构地区：[1]Department of Hydraulic Engineering, State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China

出　　处：《Science China(Technological Sciences)》索引2011年第54卷第6期,共7页

基　　金：supported by the National Key Technology R & D Program of China (Grant No 2007BAD38B01);the National Science Founda-tion for Post-doctoral Scientists of China (Grant No 20100470297) 摘　　要：Soil particle size distribution(PSD),one of the most important soil physical attributes,is of great importance to soil water movement,soil erosion and soil solute migration.In this study,the soil PSD of 563 soil samples from the mulched drip irrigated cotton fields in Xinjiang of China were measured by laser diffraction particle size analyzer.The soil PSD characteristics and its relations with soil water and salt were studied by using the combined methods of textural triangle,fractal and multifractal analysis.The results showed very low clay content(about 1.52%) while really high sand content of the studied soil,and a complex shape of bimodal or unimodal of soil PSD.The results also showed that the two indices,i.e.,standard deviation and the peak value of soil particle relative volumes,were good indicators of soil PSD and thus had good relations with fractal and multifractal characteristics.The correlative analysis further indicated that the mulched drip irrigation had a significant impact on the distribution of the soil salt,while this impact withered for the deeper soil layer.The soil texture feature was found to dominate soil water and salt distribution,especially the surface soil salt content and the deep soil water content. 关键词：土壤水分运动盐分分布膜下滴灌粒度分布新疆中国多重分形分析土壤溶质迁移

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Soil particle size distribution and its relationship with soil water and salt under mulched drip irrigation in Xinjiang of China

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耦合文献(44)

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