Spatial and seasonal dynamics of soil loss ratio in mountain rangelands of south-western Kyrgyzstan  

作　　者：Maksim KULIKOV Udo SCHICKI-IOFF Peter BORCHARDT 

机构地区：[1]CEN Center for Earth System Research and Sustainability, Institute of Geography, University of Hamburg, Germany

出　　处：《Journal of Mountain Science》2016年第2期316-329,共14页山地科学学报（英文）

基　　金：project “The Impact of the Transformation Process on Human-Environment Interactions in Southern Kyrgyzstan”;funded by the Volkswagen Foundation,Hannover,Germany

摘　　要：Vegetation cover is the main factor of soil loss prevention.The C-factor of the RUSLE(Revised Universal Soil Loss Equation) was predicted with NDVI,ground data and exponential regression equation for mountain rangelands of Kyrgyzstan.Time series of C-factor,precipitation and temperature were decomposed into seasonal and trend components with STL(seasonal decomposition by loess) to assess their interrelations.C-factor,precipitation and temperature trend components indicated significant lagged correlation,whereas seasonal components indicated more complex relations with climate factors which can be promoting as well as limiting factors for vegetation development,depending on the season.Rainy springs and hot summers may increase soil loss dramatically,whereas warm and dry springs with rainy summers can decrease it.Steep slopes indicated higher soil loss ratio,whereas flat areas were better protected by vegetation.

关 键 词：Soil loss ratio C-FACTOR RUSLE NDVI Time series Remote sensing 

分 类 号：S157[农业科学—土壤学] TU-024[农业科学—农业基础科学]