晋西北黄土区土壤侵蚀动态变化及驱动力研究
Study on Dynamic Change and Driving Force of Soil Erosion in Loess Area of Northwest Shanxi Province
何宇琛 1晋华 1朱博文 1张劲夫 1闵雅欣 1马雪健 1巩秀才1
作者信息
- 1. 太原理工大学水利科学与工程学院,山西 太原 030024
- 折叠
摘要
为探究晋西北黄土区土壤侵蚀时空变化规律和驱动力,基于遥感(RS)、地理信息系统(GIS)技术和土壤侵蚀模型(RUSLE)对研究区2000～2019年土壤侵蚀情况进行时空演变分析,并借助地理探测器对影响区域土壤侵蚀的主要驱动因素进行分析.结果表明,晋西北黄土区2000～2019年土壤侵蚀主要以微度侵蚀和轻度侵蚀为主,占区域总面积的99%以上,土壤侵蚀总体呈下降趋势.地理探测器对研究区土壤侵蚀驱动力分析结果显示,影响土壤侵蚀最显著的因素为植被覆盖度,解释力达26.42%,植被覆盖度与坡度的联合作用最为明显,解释力达到61.75%,研究结果可为区域水土流失综合治理提供依据.
Abstract
In order to explore the spatio-temporal variation and driving forces of soil erosion in the loess region of Northwest Shanxi Province,this study analyzed the spatio-temporal evolution of soil erosion in the study area from 2000 to 2019 based on Remote Sensing(RS),geographic information system(GIS)technology and soil erosion model(RU-SLE).And the driving forces of the main factors affecting the study area was analyzed by using the geographic detector.The results show that the soil erosion in the loess region of Northwest Shanxi Province from 2000 to 2019 was mainly mi-cro erosion and mild erosion,accounting for more than 99%of the total area,and the soil erosion showed a downward trend.According to the analysis results of the driving force of soil erosion in the study area by the geographical detector,the most significant factor affecting soil erosion was vegetation coverage,with an explanatory power of 26.42%,and the interaction between vegetation coverage and slope is the most obvious,with an explanatory power of 61.75%.The re-search results can provide a basis for the comprehensive control of regional soil and water loss.
关键词
土壤侵蚀/时空演变/地理探测器/驱动因素/植被覆盖度Key words
soil erosion/spatio-temporal evolution/geographic detector/driving forces/vegetation coverage引用本文复制引用
基金项目
山西省自然科学基金基础研究计划(202103021223078)
出版年
2024
NETL
NSTL
万方数据