Comprehensive evaluation on land ecological quality based on GIS and Fragstats: a case study in Xiantao City, Hubei Province

With the help of GIS and Fragstats analysis technology, combined with land use type data, the comprehensive evaluation research model of land ecological quality is constructed from the three aspects of landscape characteristics of land ecosystem, anti-interference ability of habitat quality, and social and economic benefits, and it is determined by improved entropy weight method The index weight. Take Hubei Xiantao as an example, explore the spatial evolution of the three, and comprehensively evaluate its land ecological quality on this basis. The results show: (1) The overall level of land ecological quality in Xiantao City is low, and It presents the spatial differentiation characteristics of high in the middle, low on both sides, and the west wing is higher than the east wing. Among them, dangerous, critically safe, safer and safer levels account for 21.52%, 43.48%, 27.10% and 7.90 of the total area respectively. %. (2) Safety zones are mainly distributed in the central and northern central urban areas where the economic and policy advantages are the most prominent and the overall landscape pattern is well planned. In this area, there is a mutual relationship between the landscape characteristics, the anti-interference ability of the habitat quality and the social and economic benefits. (3) Safer and critically safe areas are mainly distributed in the west wing areas where the land landscape pattern is better and the degree of development is lower. The dangerous areas are mainly distributed in the east where the level of habitat quality and anti-interference ability is low. Wing area. In the east and west wings, the synergy between the landscape characteristics, the anti-interference ability of the habitat quality and the social and economic benefits is poor, and the development contradictions between the two are prominent. The research results can be a comprehensive land remediation project in Xiantao City The implementation provides theoretical support and other similar regions provide case references.