西南岩溶地区小流域坡地土壤侵蚀影响因素分析  

Influencing Factors Analysis of Soil-erosion of Slope Land in Small Watershed of Southwest Karst Area

作　　者：黄玲玲[1,2] 陈喜[1,2] 张志才[1,2] 

机构地区：[1]河海大学水文水资源与水利工程科学国家重点实验室,江苏南京210098 [2]河海大学水文水资源学院,江苏南京210098

出　　处：《水电能源科学》2013年第8期132-134,共3页Water Resources and Power

基　　金：国家自然科学基金资助重大项目(51190091);国家自然科学基金资助重点项目(40930635);国家自然科学基金资助项目(51079038)

摘　　要：为研究贵州省山丘地区坡地不同下垫面条件下土壤侵蚀规律及其影响因素,根据西南岩溶地区毕节石桥小流域不同水土流失治理措施,采用2006～2008年实测降雨量、地表径流量、水土侵蚀量观测资料,分析了各种水保措施及坡度和坡长下的地表径流量和土壤侵蚀量变化规律。结果表明,坡改梯措施对水土流失的治理效果最佳,极端暴雨下的强度及雨量对水土流失作用显著,在不同降雨量情况下侵蚀模数随坡度、坡长的变化呈现出不同的变化规律。To study the soil erosion and its influencing factors of hilly slope land in Guizhou Province under different underlying surface conditions, according to the different water and soil loss harnessing measures of the Bijie Stonebridge small basin in southwest Karst area, the 2006-2008 observed rainfall, surface runoff, soil and water erosion observations are used to analyze various soil water conservation measures as well as the slope length and variation of the amount of sur- face runoff and soil erosion. The results show that the measure of changing slope land into terrace has the best effect of water and soil loss harnessing; the extreme storm intensity and rainfall amount has obvious role of water and soil loss; erosion modulus under different rainfall amount appears different laws with the variation of slope and slope length.

关 键 词：水土保持 岩溶 土壤侵蚀 贵州 

分 类 号：TV882.8[水利工程—水利水电工程] S157.1[农业科学—土壤学]