TEMPORAL AND SPATIAL VARIATION OF SOIL EROSION IN CENTRAL YUNNAN PROVINCE, CHINA

Z.Y. LIU, J.P. ZHANG, J.L. WANG
2020 Applied Ecology and Environmental Research  
Soil erosion is one of the major global environmental problems. Understanding the spatiotemporal changes in soil erosion is of great significance to its prevention and control of soil erosion and the optimization of ecological environments. Taking Central Yunnan Province (CYP), China as the study area, multitemporal remotely sensed images, GIS technology and the RUSLE model were used to estimate the amount of soil erosion in the CYP during 1980-2018. The results show the following: (1) During
more » ... owing: (1) During the study period, the soil erosion situation in the CYP showed a growing development trend. With 2005 as a turning point, the area of micro-erosion first decreased and then increased, and the area of soil erosion with mild and above intensity was effectively controlled. (2) Through the global spatial autocorrelation, the spatial distribution of soil erosion intensity in the CYP has significant aggregation, and the global Moran I index is between 0.48 and 0.66. The areas with moderate and above erosion intensity were mostly distributed in the mountains, northern valleys, and the northwestern and southwestern regions of the CYP. Through the analysis of local spatial autocorrelation, it is also proved that the distribution of intensity soil erosion is mostly related to regional topography. APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH 18(5):6691-6712.
doi:10.15666/aeer/1805_66916712 fatcat:iwoyx7f5hvgdvoswaojl4promu