Spatial and temporal dynamic assessment of urban landscape ecological risk based on GIS and RS technology: the case of Xingtai City

This study assessed the ecological risk of urban landscape patterns, extracted and analyzed the remote sensing image information of the study area using RS technology, and determined the characteristics of the area's dynamic land use change. Then, using spatial analysis, overlay analysis, and spatial statistics in GIS, the landscape ecology statistics of the study area were conducted based on the annual land use changes in Xingtai City over the previous 20 years. The research shows that: (1) Land use change in Xingtai City from 2000 to 2020 indicates that farmland is the primary land source for urban expansion and development in the process of urbanization; (2) The degree of landscape fragmentation in the surrounding areas of cities and towns in the study area has decreased, and the degree of ecological risk in these areas has also been significantly reduced, reflecting that reasonable land planning can reduce the degree of ecological risk; (3) By analyzing the spatial distribution characteristics of landscape ecological risk, this paper identifies the crisscross zone of diverse ecological function areas as the region with the highest ecological risk.