黄河中游1978-2010年间土壤侵蚀风险的动态监测研究（英文）

作     者：赵海根 唐于渝 杨胜天 

作者机构：School of Geography Beijing Normal University State Key Laboratory of Remote Sensing Science Beijing Normal University Institute of Environment and Sustainable Development in Agriculture Chinese Academy of Agricultural Sciences Beijing Water Science and Technology Institute 

出 版 物：《Journal of Geographical Sciences》 (地理学报（英文版）)

年 卷 期：2018年第28卷第2期

页      面：175-192页

核心收录：

学科分类：0709[理学-地质学] 08[工学] 0815[工学-水利工程] 0704[理学-天文学] 

基　　金：National Natural Science Foundation of China,No.41701517 National Key Project for R&D,No.2016YFC0402403,No.2016YFC0402409 

主　　题：dynamic identification soil erosion risk multi-criteria evaluation multi-source remote sensing Yel-low River Basin 

摘      要：Soil erosion has become a significant environmental problem that threatens eco- systems globally. The risks posed by soil erosion, the trends in the spatial distribution in soil erosion, and the status, intensity, and conservation priority level in the middle reaches of the Yellow River Basin were identified from 1978 to 2010. This study employed a multi-criteria evaluation method integrated with GIS and multi-source remote sensing data including land use, slope gradient and vegetation fractional coverage （VFC）. The erosion status in the study region improved from 1978 to 2010; areas of extremely severe, more severe, and severe soil erosion decreased from 0.05%, 0.94%, and 11.25% in 1978 to 0.04%, 0.81%, and 10.28% in 1998, respectively, and to 0.03%, 0.59%, and 6.87% in 2010, respectively. Compared to the period from 1978 to 1998, the area classed as improvement grade erosion increased by about 47,210.18 km2 from 1998 to 2010, while the area classed as deterioration grade ero- sion decreased by about 17,738.29 km2. Almost all severe erosion regions fall in the 1st and 2rid conservation priority levels, which areas accounted for 3.86% and 1.11% of the study area in the two periods, respectively. This study identified regions where soil erosion control is required and the results provide a reference for policymakers to implement soil conservation measures in the future.