干旱区地理2025，Vol.48Issue(12)：2073-2086,14.DOI:10.12118/j.issn.1000-6060.2025.236
基于改进遥感生态指数的准东地区生态环境质量时空变化分析
Spatiotemporal dynamics of ecological quality in the Zhundong region based on an arid modified remote sensing ecological index model
摘要
Abstract
The Zhundong region in Xinjiang,a typical arid and semi-arid area,is a vital national energy base with abundant coal resources.However,intensive coal mining and related industrial activities have caused severe eco-logical issues,including land desertification,salinization,and PM2.5 pollution,intensifying the conflict between re-source exploitation and ecological preservation.To accurately evaluate the ecological environment quality(EEQ)of this region,an arid modified remote sensing ecological index(ARSEI)is proposed herein.The ARSEI im-proves upon the traditional remote sensing ecological index by incorporating indicators for salinity,desertifica-tion,and air pollution,besides greenness,wetness,and heat.Using the Google Earth Engine platform,Landsat 5/8 images from 2000 to 2023 were processed to generate the ARSEI.The first principal component derived via prin-cipal component analysis was used to construct the ARSEI,with the direction of the wetness component applied to resolve the eigenvector ambiguity.Temporal trends were analyzed using Sen's slope estimator and Mann-Ken-dall trend test,and ecological vulnerability was assessed based on the sensitivity and adaptability of the ARSEI.The optimal parameter-based geographical detector was employed to identify key driving factors and their interac-tions.Results indicated that the ARSEI of the Zhundong region showed a trend of initial decline followed by a partial recovery from 2000 to 2023,with its mean value decreasing from 0.368 in 2000 to 0.225 in 2018,before increasing to 0.289 in 2023.Spatially,the EEQ was generally poor,with over 60%of the area classified as"poor"or"relatively poor",exhibiting a clear north-south gradient where the southern part exhibited better eco-logical conditions.Trend analysis revealed that 83.5%of the region experienced significant ecological degrada-tion,whereas only 4.6%showed improvement,mainly in the southern agricultural and urban areas with low eco-logical vulnerability.Single-factor detection identified human activity intensity(q>0.6)and evapotranspiration(q>0.35)as the primary drivers.The interaction between temperature and human activity intensity had the stron-gest explanatory power(q>0.7),indicating nonlinear enhancement effects.In summary,large-scale resource de-velopment has exerted considerable pressure on the already fragile ecosystem.Although ecological restoration measures since 2019 have led to a partial recovery,the northern mining areas remain highly vulnerable due to wa-ter scarcity and soil degradation.The ARSEI model demonstrates enhanced applicability in arid resource-based re-gions and offers a scientific basis for ecological protection and sustainable development strategies.关键词
准东地区/生态环境质量/干旱遥感生态指数/生态脆弱性/最优参数地理探测器/Landsat 5/8Key words
Zhundong region/ecological environment quality/arid modified remote sensing ecological index/ecological vulnerability/optimal parameter geographical detector/Landsat 5/8引用本文复制引用
DENG Wenbin,SONG Sen,YI Hongmei..基于改进遥感生态指数的准东地区生态环境质量时空变化分析[J].干旱区地理,2025,48(12):2073-2086,14.基金项目
国家自然科学基金项目(52404188) （52404188）
新疆维吾尔自治区自然科学基金项目(2024D01C244) （2024D01C244）
新疆重点研发项目(2022B03033-1) （2022B03033-1）
新疆维吾尔自治区天池英才项目资助 （）
