Assessment of Land Ecological Security and Analysis of Influencing Factors in Chaohu Lake Basin, China from 1998–2018

The land ecosystem provides essential natural resources for the survival and development of human beings. Therefore, ecological security (LES) acts as a vital part sustainable society economy. This study included dynamic analysis use change in Chaohu Lake Basin (CLB) China from 1998 to 2018, evaluating spatiotemporal patterns LES at both administrative district scale grid (200 m × 200 m). Then, geographic detector was applied analyze influence assessment index on LES. results show that 2008–2018 period, changed more significantly compared 1998–2008 period. continuous extension urban led decrease areas other types. In CLB (administrative scale), levels varied throughout Changfeng, Feixi, three regions, has been improved. However, six regions showed different degrees decline, particularly Hexian Urban Hefei. Simultaneously, gradual improvement level. anthropogenic factors stronger than factors. Findings this provide reliable guidance improving environment ecologically fragile areas.