Spatial and temporal evolution of habitat quality in Tuha region from 2001 to 2022 and analysis of influencing factors
[Objective]As the core of China's Silk Road Economic Belt,the Tuha region(Turpan and Hami cities)has become a concern in balancing the local ecological environment and sustainable development in the process of high-quality economic development.[Method]The present study was based on Google Earth Engine cloud platform using MODIS remote sensing images to calculate heat,greenness,dryness and humidity,and construct Remote Sensing Ecological Index(RSEI)by principal component analysis.The research employed the Sen+Mann Kendall,Hurst index,coefficient of variation and geodetic detector to analyze the spatial and temporal changes and future trends of ecological environment quality in Tuha region from 2001 to 2022,and to explore its influence mechanism.[Result](i)The ecological environment quality of the Tuha region showed an improving trend from 2001 to 2022.(ii)The trend of RSEI change was dominated by insignificant im-provement,accounting for 71.79％of the total area,and the ecosystem was relatively stable,but the ecosystems in the northern mountainous areas and around the built-up areas of cities and counties were fragile;The trend of RSEI change in the future would be dominated by contin-uous improvement,with the area accounting for 54.02％of the total area.(iii)During the past 22 years,the area of grassland has increased the most,and the overall greening level has risen.(iv)Heat was the main factor in the spatial differentiation of ecological environment quali-ty,and when heat interacted with elevation and greenness,the effect on ecological environment quality was more significant.[Conclusion]Due to the improvement of greening level,the ecological environment quality of Tuha region is generally at a good level and on an upward trend;The habitat quality of the site has obvious spatial variability,with heat having the greatest impact on the ecological environment of Tuha re-gion.The study can provide a scientific basis for ecological environmental protection in the Tuha region.
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