河南省豫西黄土丘陵区2015—2020年水土保持功能时空变化

Temporal and Spatial Changes of Soil and Water Conservation Function in Loess Hilly Region of Western Henan Province from 2015 to 2020

基于豫西黄土丘陵区遥感数据和RUSLE模型,分析评估了区域水土保持功能变化的时空特征.通过研究发现,2020年豫西区域土壤侵蚀量级总体上以中度及以下为主,占比为76.09%,强度及以上占比为23.91%;土壤侵蚀防治重点区域主要分布于区域南部洛宁、汝阳、嵩县,西部的灵宝,北部的济源、渑池等.与2015年相比,区域的水土保持功能得到了显著了提升.

Based on remote sensing data of the loess hilly region in western Henan and RUSLE model,this paper analyzes and evaluates the spatial and temporal characteristics of regional soil and water conservation function change.It is found that the soil erosion level in western Henan in 2020 is mainly moderate or below,accounting for 76.09%,and the intensity or above accounts for 23.91%.The key areas of soil erosion control are mainly distributed in Luoning,Ruyang and Song County in the south,Lingbao in the west,Jiyuan and Mianchi in the north,etc.The regional soil and water conservation function has been significantly improved compared with 2015.