2000-2020年丹江口库区植被覆盖与土地利用时空演变分析OA北大核心CSTPCD

It is of great significance to clarify the relationship between vegetation cover and land use change for the coordinated development of regional human land relations.Based on MODIS NDVI data and land use remote sensing monitoring data from 2000 to 2020 in Danjiangkou Reservoir area,vegetation coverage in the reservoir area was estimated using a pixel binary model,and its spatiotemporal variation characteris-tics were analyzed.Combining the land use change map and landscape pattern index,the law of land use change in the reservoir area was revealed,and its impact on vegetation cover was explored.The results showed that 1)from 2000 to 2020,vegetation coverage in Danjiangkou Reservoir area was generally high and showed an increasing trend,with a growth rate of 0.001 4/a,the areas with extremely significant(P＜0.01)and significant(P＜0.05)increasing trends accounted for 15.74％and 14.16％,respectively,and the future vegetation coverage changes in the reservoir area will be good.2)The land use in the reservoir area was mainly characterized by the changes in forest land,grassland,and cultivated land,while LPI,SH-DI,and AI were generally increasing.3)The changes in forest land,cultivated land,and grassland in the reservoir area had significant impacts on vegetation cover,and the changes in land use types promoted an increase in vegetation cover.LPI and AI were positively correlated with vegetation cover changes,while SHDI was negatively correlated with vegetation cover changes.Vegetation cover in Danjiangkou reservoir area is significantly affected by land use changes,and the research results can provide a theoretical basis for the optimization of land space and ecological restoration in the reservoir area.