水土保持研究2024，Vol.31Issue(1)：385-394,10.DOI:10.13869/j.cnki.rswc.2024.01.031
2000-2021年新疆植被覆盖度变化及驱动力
Vegetation Cover Change and Its Response to Climate and Surface Factors in Xinjiang Based on Different Vegetation Types
摘要
Abstract
[Objective]The aims of this study are to explore the change of vegetation cover and its driving forces in Xinjiang from 2000 to 2021,and provide a theoretical basis for environmental monitoring in Xin-jiang.[Methods]GEE platform was used to obtain NDVI data provided by NASA.Trend analysis and Hurst index method were used to carry out dynamic analysis of vegetation cover change in Xinjiang from 2000 to 2021.Based on meteorological data,Mann-Kendall and partial correlation analysis were used to analyze the response of vegetation cover change to climate and surface factors.[Results](1)The interannual variation of NDVI in Xinjiang increased at a rate of 0.001 4/a from 2000 to 2021.The annual variation showed an inverted'U'shape,and the monthly NDVI of meadow vegetation fluctuated the most.(2)The annual average of NDVI in Xinjiang from 2000 to 2021 fluctuated between 0 and 0.3 with 77.9％,which was higher in the north and northwest,and lower in the south and southeast.(3)From 2000 to 2021,the overall slope value in Xin-jiang fluctuated between-0.036 and 0.052,with the main change trend being basically unchanged and slightly improved.According to Hurst index,the main future trend change of vegetation in Xinjiang was from improvement to degradation.(4)Air temperature in Xinjiang showed an increasing trend,while precip-itation,soil moisture and runoff showed a decreasing trend during 22 years.The pixel proportion of the annual mean of NDVI in negative correlation with air temperature,precipitation,soil moisture and runoff was greater than that in positive correlation,and there were obvious spatial and regional characteristics.[Conclusion]The vegetation cover change in Xinjiang is on the rise,but the future trend is not optimistic,and it is necessary to pay attention to environmental monitoring and other protection measures in Xinjiang.关键词
植被类型/NDVI/趋势变化/气温/降水/土壤湿度/径流Key words
vegetation type/NDVI/change of trend/temperature/precipitation/soil moisture/runoff分类
农业科技引用本文复制引用
马楠,白涛,蔡朝朝..2000-2021年新疆植被覆盖度变化及驱动力[J].水土保持研究,2024,31(1):385-394,10.基金项目
新疆维吾尔自治区自然科学基金面上项目(2022D01A81) （2022D01A81）
自治区高校基本科研业务费科研项目(XJEDU2022J009) （XJEDU2022J009）
新疆农业大学研究生科研创新资助项目(XJAUGRI2022032) （XJAUGRI2022032）
