盆地型喀斯特流域土壤侵蚀模数的沉积量测量法  

Calculation of the soil erosion modulus of basin with the measurement method of sedimentation in Karst area

作　　者：谢良胜[1] 吴攀[1] 顾尚义[1] 曹振兴[1] 葛佳杰[1] 

机构地区：[1]贵州大学资源与环境工程学院,贵阳550003

出　　处：《中国水土保持科学》2010年第2期20-23,29,共5页Science of Soil and Water Conservation

基　　金：国家"973"计划项目"碳酸盐岩风化的生物地球化学过程与成土速率"(2006CB403202);贵州省科技厅重大专项计划项目"喀斯特生态景观主要类型;格局及其退化规律"(黔科合重大专项字【2006】6041-1);贵州大学研究生创新基金"麻窝山石漠化地区岩溶盆地碳酸盐岩红土堆积的年代记录研究"(【省研理工】2009010)

摘　　要：为研究盆地型喀斯特石漠化地区的土壤侵蚀模数,运用沉积量测量法计算乌蒙山脉的麻窝山岩溶盆地中沉积区内土壤的沉积量,推算出流域内的土壤侵蚀模数,从而反演其石漠化进程,并探讨人类活动对喀斯特石漠化地区土壤侵蚀模数的影响。结果表明:麻窝山岩溶盆地流域的土壤侵蚀模数较高,为2 900.55 t/(km2.a),能客观地反映喀斯特石漠化山区土壤的侵蚀状况;沉积量测量法计算的土壤侵蚀模数比较接近现实,且其计算方法简单,数据可靠,容易操作,因此,该方法可作为无资料数据和测站时盆地型喀斯特流域计算土壤侵蚀模数的首选模型。For studying the soil erosion modulus in the Karst rocky desertification areas, the measurement method of the sedimentation at the deposition zone of basin is used to calculate the soil erosion modulus and to speculate on the rocky desertification process of the Mawoshan of Wumeng range in the Karst area. The environmental effects on the soil erosion modulus, caused by human being＇ s activities in Karst rocky desertification areas are discussed simultaneously. The research results indicate that the soil erosion modulus in the Mawoshan is very high, up to 2 900.55 t/（ km^2 · a） , which can reflect the position of the soil erosion objectively in the karst rocky desertification areas. Considering nothing but total quantity changes in the process of calculating the soil erosion modulus, the measurement method of the sedimentation at the deposition zone should be choiced firstly for the soil erosion calculation in the Karst rocky desertification areas where there is no observation data and survey station.

关 键 词：侵蚀模数 参数确定 石漠化进程 沉积量测量法 麻窝山 

分 类 号：S157[农业科学—土壤学]