Abstract
The land ecosystem provides essential natural resources for the survival and development of human beings. Therefore, land ecological security (LES) acts as a vital part of the sustainable development of human society and economy. This study included a dynamic analysis of land use change in Chaohu Lake Basin (CLB) in China from 1998 to 2018, evaluating the spatiotemporal patterns of LES at both the administrative district scale and grid scale (200 m × 200 m). Then, geographic detector was applied to analyze the influence of the assessment index on LES. The results show that in the 2008–2018 period, land use changed more significantly compared to the 1998–2008 period. The continuous extension of urban land led to a decrease in the areas of other land use types. In the CLB (administrative district scale), the LES levels varied throughout the study period. In Changfeng, Feixi, and the other three regions, the LES has been significantly improved. However, the LES in six other regions showed different degrees of decline, particularly in Hexian and Urban Hefei. Simultaneously, the LES showed a gradual improvement at a 200 m × 200 m grid scale level. The influence of anthropogenic factors on the LES was stronger than natural factors. Findings from this study provide reliable guidance for improving the ecosystem environment in ecologically fragile areas.
Highlights
Ecological security is considered to be a fundamental requirement for economic development and social progress [1]
The significant expansion of urban land led to different degrees of reduction in other land use types
The dynamic degree of forestland and water area changes were less than 0, and decreased to a lower extent compared to the other land-use
Summary
Ecological security is considered to be a fundamental requirement for economic development and social progress [1]. Human activities have led to significant changes in the ecological environment. Environmental degradation and pollution emissions have been repeatedly allowed, damaging the region’s natural surface cover, and aggravating industrial pollution and water pollution. Together, these have compromised worldwide ecological security [2,3]. More attention has been paid to ecological security issues over time. Ecological security has become a prominent research topic of wide interest [4,5]. The specific concept of ecological security was first proposed by the United
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