干旱区地理2025，Vol.48Issue(10)：1721-1735,15.DOI:10.12118/j.issn.1000-6060.2024.790
昆仑山北坡绿洲荒漠关键带生境质量时空变化
Spatio-temporal shifts in ecological habitat quality of the oasis-desert critical zone on the northern slope of Kunlun Mountains:Taking the Yutian Oasis in Hotan Prefecture as an example
摘要
Abstract
Habitat is a comprehensive index to evaluate the quality of ecology,reflecting the coupling state of wa-ter,soil,air,biology,and other factors.The desertification remote sensing ecological index(DRSEI)can be used as a multi-index evaluation model to quantify the impact of human activities(such as resources and protection)on habitats in arid areas.Specifically,Xinjiang is located in inland northwest China,where the arid ecosystem is fragile.As the oasis-desert critical zone is extremely sensitive to environmental(climatic)changes,there is an ur-gent need to perform ecological environmental quality assessment.In this research,we explored the spatial and temporal characteristics of the quality of the ecological surroundings quality of the oasis-desert critical zone on the northern slope of the Kunlun Mountains from 2004 to 2021,using the DRSEI model.Then,considering the Yutian Oasis as the study area,analysis was performed using remote sensing,GIS,and mathematical analysis.The Yutian Oasis is located on the northern slope of the Kunlun Mountains and in the southern margin of the Tarim Basin,in Hotan Prefecture,Xinjiang Uygur Autonomous Region.The Yutian Oasis serves as an important economic and transportation hub on the southern route of the Silk Road.Simultaneously,this study introduces a remote sensing ecological index for desertification,which couples surface vegetation,soil moisture,land surface temperature,surface dryness,and desertification degree.Specifically,they respectively represent land surface greenness,moisture,thermal condition,dryness,and desertification status.The results show that fluctuations in Yutian Oasis habitats increased over time:The value of DRSEI increased from 0.3545 in 2004 to 0.3953 in 2021,a change of 0.0408(+11.5%);the proportion of excellent DRSEI ∈(0.6-1.0)increased from 22.45%to 27.27%;and the proportion of poor DRSEI ∈(0.0-0.2)and moderately poor DRSEI ∈(0.2-0.4)decreased from 63.31%to 52.82%.Essentially,the soil-regulated vegetation index and humidity index in DRSEI are positive effects,in-creasing from 2004 to 2021,whereas the degree of soil drying,surface heat,and desertification are negative ef-fects,and decreased over time.The analysis of mathematical statistics(such as Sen,variation coefficient)re-vealed that the habitat of the Yutian Oasis is generally improving;the proportion of rising areas increases,the cen-ter of the oasis is stable,and the local edge areas are fluctuating.A time series prediction was developed and veri-fied in the final step;approximately 62.18%of the Yutian Oasis may decrease in the future,specifically in 24.21%of the area located on the north,northeast,and south edges.In future research,we are planning to focus on the effects of a wide range of soil salinization,in addition to other environmental factors,on ecological sur-roundings quality in this region.The research findings provide a theoretical basis for protecting the ecological quality of oases in arid regions and offer theoretical support for safeguarding ecological security,border security,and national defense security on the northern slope of the Kunlun Mountains.关键词
昆仑山北坡/绿洲荒漠关键带/生境质量/荒漠化遥感生态指数/于田绿洲Key words
the northern slope of Kunlun Mountains/oasis-desert critical zone/ecological habitat environment quality/desertification remote sensing ecological index/Yutian Oasis引用本文复制引用
阿迪力江·帕尔合提,李刚勇,陈春波,彭建..昆仑山北坡绿洲荒漠关键带生境质量时空变化[J].干旱区地理,2025,48(10):1721-1735,15.基金项目
新疆维吾尔自治区重大科技计划专项(2024A03011-1) （2024A03011-1）
2025年自治区林草专项资金(草原保护建设支撑)草原科技支撑服务项目 （草原保护建设支撑）
干旱区林草资源一体化监测与预警(E3500111) （E3500111）
自治区林草科技任务(XJLCKJ-2025-10) （XJLCKJ-2025-10）
新疆第三次综合科学考察新疆重要草地类型分布与调查报告(2022xjkk0400)资助 （2022xjkk0400）
