[1]Ma Nan,Bai Tao,Cai Zhaozhao.Vegetation Cover Change and Its Response to Climate and Surface Factors in Xinjiang Based on Different Vegetation Types[J].Research of Soil and Water Conservation,2024,31(01):385-394.[doi:10.13869/j.cnki.rswc.2024.01.031]
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Vegetation Cover Change and Its Response to Climate and Surface Factors in Xinjiang Based on Different Vegetation Types

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 31 Number of periods: 2024 01 Page number: 385-394 Column: Public date: 2024-02-20
Title:
Vegetation Cover Change and Its Response to Climate and Surface Factors in Xinjiang Based on Different Vegetation Types
Author(s):
Ma Nan1, Bai Tao1,2, Cai Zhaozhao1,2
(1.College of Computer and Information Engineering, Xinjiang Agricultural University, Urumqi 830052, China; 2.Xinjiang Agricultural Informatization Engineering Technology Research Center, Urumqi 830052, China)
Keywords:
vegetation type;  NDVI;  change of trend;  temperature;  precipitation;  soil moisture;  runoff
CLC:
Q948
DOI:
10.13869/j.cnki.rswc.2024.01.031
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 Xinjiang. [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 Xinjiang 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 precipitation, 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.
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