Relationships Between Permeability and Erodibility of Cultivated Acrisols and Cambisols in Subtropical China  

作　　者：YU Dong-Sheng SHI Xue-Zheng D. C. WEINDORF 

机构地区：[1]State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 （China） [2]Department of Agribusiness, Agronomy, Horticulture and Range Management, Tarleton State University, Stephenville, TX 76302 （USA）

出　　处：《Pedosphere》2006年第3期304-311,共8页土壤圈（英文版）

基　　金：Project supported by the National Natural Sciences Foundation of China (No. 40471081)the National Key Basic Research Support Foundation (No. G1999011810)the Knowledge Innovation Program of the Chinese Academy of Sciences (No. KZCX3-SW-422)

摘　　要：The relationships between soil erodibility factor （K） and soil saturated permeability （gfs） for cultivated Acrisols derived from Quaternary red clay and Cambisols derived from red sandstone were studied and quantified using a rainfall simulator and Guelph permeameter in a hilly area of subtropical China. A negative correlation existed between Kfs of the topsoil （0-5 cm） and K. The empirical expression K ≈ α × Kfs^-b＋c, where a, b and c are the structural coefficients related to soil properties, such as soil type, soil parent material, organic matter, pH and mechanical composition, best described the relationship between soil saturated permeability and soil erodibility.The relationships between soil erodibility factor (K) and soil saturated permeability (Kfs) for cultivated Acrisols derived from Quaternary red clay and Cambisols derived from red sandstone were studied and quantified using a rainfall simulator and Guelph permeameter in a hilly area of subtropical China. A negative correlation existed between Kfs of the topsoil (0-5 cm) and K. The empirical expression K≈a×Kfs-b + c, where a, b and c are the structural coefficients related to soil properties, such as soil type, soil parent material, organic matter, pH and mechanical composition, best described the relationship between soil saturated permeability and soil erodibility.

关 键 词：soil erodibility soil saturated permeability subtropical China UPLAND 

分 类 号：S152.72[农业科学—土壤学]