喀斯特石漠化地区不同治理措施下的土壤抗蚀性研究——以贵州毕节石桥小流域为例  

A Study of the Soil Anti-erodibility of Different Ecological Management in Rocky Desertification of Karst Mountainous Area——A case study on the Shiqiao catchments of Bijie city of Guizhou Province

作　　者：贺祥[1] 熊康宁[2] 陈洪云[3,4] 

机构地区：[1]贵州凯里学院,贵州凯里556000 [2]贵州师范大学中国南方喀斯特研究院,贵阳550001 [3]中国科学院地球环境研究所,西安710075 [4]中国科学院研究生院,北京100039

出　　处：《西南师范大学学报（自然科学版）》2009年第4期133-139,共7页Journal of Southwest China Normal University(Natural Science Edition)

基　　金：国家"十一五"科技支撑计划重大课题(2006BAC01A09-07)资助;贵州省凯里学院规划课题(Z0806)

摘　　要：对喀斯特山区不同治理措施下的石漠化演化过程土壤抗蚀性分析研究,结果表明:采用不同治理措施后,强度石漠化土壤抗蚀性优于其他等级石漠化土壤,潜在石漠化土壤抗蚀力最差.石漠化土壤抗蚀性大小顺序为原生样地、强度石漠化、轻度石漠化、中度石漠化、潜在石漠化.采用土壤有机质含量、EVA、结构体破坏率、>0.25 mm水稳性团粒含量、>0.5 mm水稳性团粒含量、团聚度、分散率、侵蚀率、<0.001 mm粘粒分散系数等指标,较好地表征喀斯特山区石漠化土壤的抗蚀性.The soil anti-erodibility was studied for the different father measurements in the karst mountainous area in the process of karst rocky desertification. The results show that the soil anti-erodibility for the intensive rocky desertification is better than other grades, the soil anti-erodibility for the potential rocky desertification is worst among them. The sequence for soil anti-erodibility is followed that native groundwater, intensive rocky desertification, gentleness rocky desertification, moderate rocky desertification and potential rocky desertification. Adopted serial index, such as soil organic matter, structure breach frank, 〉0.25 mm water stability aggregate content, 〉0.5mm water stability aggregate content, accumulation degree, dispersion rate, erosion ratio and 〈0. 001 mm soil clay dispersion coefficient, which preferably indicate the soil anti-erodibility of the rocky desertification in karst mountainous regions.

关 键 词：生态治理区 石漠化演化过程 土壤抗蚀性 

分 类 号：S157[农业科学—土壤学]