Spatial and Temporal Evolution and Drivers of Habitat Quality in the Bohai Rim Based on Value Assessment

This paper uses the land use products around the Bohai Sea from 2000 to 2020, coupling ecosystem service value model, ecosystem vitality index and InVEST habitat quality model to assess the spatial and temporal evolution pattern of habitat quality in the coastal zone of the Bohai Rim with strong anthropogenic activities, and uses the geographic detector model to detect the driving factors and analyze the interaction of habitat temporal and spatial changes. The results show that the overall habitat quality grade in the Bohai Rim region is medium and continues to increase from 2000 to 2020, with higher habitat quality in Dalian, Yingkou, Huludao and Qinhuangdao City. In 2000, 2010, and 2020, the proportion of habitat quality in the Bohai Sea region in the medium grade area was 53%, 57.4% and 58.3%, showing a continuous upward trend, and the habitat quality grade was transformed from low and lower grade to medium grade in a larger proportion. Habitat quality changes in the Bohai Rim from 2000 to 2020 are mainly influenced by factors such as temperature, elevation, precipitation, road network density and vegetation cover, among which precipitation, temperature and elevation have a stronger degree of influence. And both factor interactions showed 2 composite enhancement results, bifactor enhancement and nonlinear enhancement. The results of the study can provide reference for habitat restoration and land use planning in coastal zone areas.