Remote sensing monitoring of desertification in Datong coalfield based on NDVI-Albedo feature space
Desertification is one of the important ecological and environmental problems that threatens regional development and human survival.Therefore,desertification monitoring is an important basic work in desertification prevention and control.This article takes the Datong coalfield in Shanxi as an example,uses the NDVI-Albedo feature space to construct the desertification difference index(DDI)from 2000 to 2021,monitors its spatiotemporal changes in desertification,and finally uses geographical detectors to analyze the influencing factors of desertification.The results show that from 2000 to 2021,the desertification of Datong coalfield changed from severe to mild,the area of severe and extremely severe desertification decreased significantly,and the area of mild desertification increased significantly.Overall,57.75%of the regions showed a significant improvement in desertification,but at the same time,0.03%of the regions showed an aggravating trend.The results of geographical detection show that vegetation is the main factor affecting desertification,and the impact of vegetation on natural factors such as rainfall and elevation has increased significantly.At the same time,the impact of vegetation on human activities such as land use and population density cannot be ignored.
万方数据
维普
