Land-use change has a strong impact on the habitat environment,and the degradation and fragmentation of habitat caused by land-use change is one of the main causes of biodiversity loss.An overall comprehension of the characteristics of land-use and habitat quality change in Xinjiang under the shared socio-economic path is of positive significance for the delineation of"three-region and three-line"and the protection of biodiversity in Xinjiang.In this study,under three climate scenarios,i.e.,SSP119,SSP245 and SSP585,the land-use distribution for the year 2035 is obtained by coupling SD-Markov-PLUS model,and the habitat quality was evaluated by In VEST model.Finally,the response of habitat quality to land-use change is analyzed.The findings of the study indicate that the years of 2000-2020 is a rapid economic development period,the areas expanded of cultivated land,forest land,water bodies and construction land were 25 234.19 km2,3 588.47 km2,2 452.50 km2 and 3 722.37 km2,respectively,while the areas of grassland and unused land diminished by 17 239.50 km2 and 17 758.06 km2,respectively,showing a trend of"four-increase and two-decrease".From 2020 to 2035,Xinjiang will gradual-ly transition to a stage with stable and high-quality development,and in different climate scenarios the area of cultivated land,construction land and unused land will be in order of decreasing magnitude:SSP585＞SSP245＞SSP119,and the area of forest land and grassland will be SSP119＞SSP245＞SSP585,while the area of water area will be uncertain.From 2000 to 2020,the mean value of the habitat index decreased from 0.311 0 to 0.305 6,and the mean value of the perennial habitat index was 0.309 5,the mean value of the habitat index in each scenario is SSP119＞SSP245＞SSP585,which,among others,mountain-ous forest and grassland area is higher,and the desert area is lower,so a pattern of"three-barrier and two-ring"takes shape.In different climate scenarios,total habitat contribution rate from 2000 to 2020 is-1.325 9,and the total habitat con-tribution rates of SSP119,SSP245 and SSP585 scenarios are-0.793 2,-0.997 3 and-1.158 9,respectively.The above results obtained could provide scientific basis and reference for coordinating economic development and ecological protection in Xinjiang.
SD-PLUS modelIn VEST modelhabitat qualityhabitat contribution rateXinjiang
万方数据
维普
