[Spatial and temporal evolution of habitat quality in Fujian Province, China based on the land use change from 1980 to 2018.]

Analyzing the characteristics of spatial-temporal evolution of habitat quality caused by land use change can provide a scientific basis for the coordinated development of regional ecological economy. With Fujian Province (the ecological civilization demonstration area of China) as an example,the InVEST model was used to evaluate the habitat quality based on the land use change data from 1980 to 2018. Further, the influencing factors were analyzed through Geodetector, and the spatial-temporal characteristics of habitat quality was analyzed by combining with the change of land use type. The results showed that the main land use change types included farmland translating to forest land and construction land, forest land translating to farmland, grassland and construction land, and grassland translating to forest land, which accounted for 8.4%, 14.5%, 7.6%, 17.1%, 6.4% and 31.7% of the total land use change, respectively. From 1980 to 2018, the overall habitat quality of Fujian Province was at a high level (0.6-0.8), showing a trend of habitat degradation and habitat quality reduction. The first leading factor for the spatial variation of habitat quality was the change of land use type, with the impact of socioeconomic factors on the habitat quality of coastal counties and cities being significantly higher than that of the entire region and inland counties and cities. The rapid encroachment of construction land on the surrounding forest and grassland accele-rated the degradation of habitat in coastal areas, the process of which was irreversible. The habitat degradation of central urban areas would undergo a similar process in inland area, but might be slower than coastal area in terms of speed and scale. In the long term, the speed of habitat degradation could be slowed by controlling the scale of cities, developing urban ecological greening, and buil-ding an ecological security pattern.