Degradation of Soil Properties due to Erosion on Sloping Land in Southern Jiangsu Province,China

查看全文 作　　者：[1]ZHANGYan;PENGBu-[2]Zhuo;[2]GAOXiang;[1]YANGHao

机构地区：[1]LMCP,InstituteofSoilScience,ChineseAcademyofSciences,Nanjing210008(China);[2]DepartmentofUrbanandResourcesScience,NanjingUniversity,Nanjing210093(China)

出　　处：《Pedosphere》索引2004年第14卷第1期,共10页

基　　金：Project supported by the National Natural Science Foundation of China (Nos. 49831070 and 49973027). 摘　　要：Soil erosion accelerates soil degradation. Some natural soils and cultivated soils on sloping land in southern Jiangsu Province, China were chosen to study soil degradation associated with erosion. Soil erosion intensity was investigated using the 137Cs tracer method. Soil particle-size distribution, soil organic matter (OM), total nitrogen (TN) and total phosphorus (TP) were measured, and the effects of erosion on soil physical and chemical properties were analyzed statistically using SYSTAT8.0. Results indicated that erosion intensity of cultivated soils was greater than that of the natural soils, suggesting that cultivation increased soil loss. Erosion also led to an increase of coarser soil particle proportion, especially in natural soils. In addition, silt was the primary soil particle lost due to erosion. However, in cultivated fields, coarser soil particles over time were attributed not only to soil erosion but also to mechanical eluviation as a result of farming activities. Moreover, erosion caused a decrease in soil OM, TN and TP as well as thinning of the soil layer. 关键词：土壤侵蚀土壤退化化学成分氮磷

相关文献

参考文献（18）
引证文献（36）
耦合文献（77）

参考文献(18)

引证文献(36)

耦合文献(77)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Degradation of Soil Properties due to Erosion on Sloping Land in Southern Jiangsu Province,China

参考文献(18)

引证文献(36)

耦合文献(77)

用户提示