Spatio-temporal evolution of land use pattern in the Yellow River Basin(Shaanxi Section)from 1990 to 2020
The Yellow River Basin is one of the most important ecological barriers in China,which plays an important role in ecological regulation,and has always been an area with a strong interaction between the natural environment and human activities.In this paper,the Yellow River Basin(Shaanxi Section)was taken as the study area,and based on multi-source data,the spatio-temporal evolution of land use pattern and the shift of were analyzed,and the PLUS model was used to simulate and predict land use in 2030.The results showed that:1)The changes of land use types in the Yellow River Basin(Shaanxi Section)from 1990 to 2020 were mainly the mutual transformation between dryland,wood-land and grassland,and also the interflow with other land types.2)During the study period,the center of gravity migration trajectories of various land use types in the Yellow River Basin(Shaanxi Section)had obvious directionality,and there were generally reciprocating and turning back trajectories during the movement.3)From 1990 to 2020,there were certain distribution and transformation patterns among different functional land use types in the Yellow River Basin(Shaanxi Section),and the expansion of do-mestic construction land in Guanzhong was obvious,and the conversion of ecological conservation land and grain production land in northern Shaanxi was the main one.4)The prediction results show that the Yellow River Basin(Shaanxi Section)will continue to focus on urbanization in the next 10 years.The ar-ea of land with obvious ecological value such as forest and grassland will not decrease much.
land usetrajectory chord diagramcenter of gravity transferPLUS modelYellow River Basin
NETL
NSTL
万方数据
