[1]WEI Hong,LI Xiaolei,XU Liping,et al.Spatial and Temporal Distribution of NDVI and Its Response to Climate Factors in the Manasi River Basin[J].Research of Soil and Water Conservation,2019,26(01):215-220.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
26
Number of periods:
2019 01
Page number:
215-220
Column:
Public date:
2019-02-28
- Title:
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Spatial and Temporal Distribution of NDVI and Its Response to Climate Factors in the Manasi River Basin
- Author(s):
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WEI Hong1, LI Xiaolei1, XU Liping1, MENG Xin2,3
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1. College of Sciences, Shihezi University, Shihezi, Xinjiang 832003, China;
2. School of Geography Science, Nanjing Normal University, Nanjing 210023, China;
3. Key Laboratory of Virtual Geographical Environment, Nanjing 210023, China
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- Keywords:
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MODIS-NDVI; meteorological factors; response; Manasi River Basin
- CLC:
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TP79
- DOI:
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- Abstract:
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Based on the MODIS-NDVI data and the corresponding meteorological data, trend analysis, R/S analysis, partial correlation analysis were carried out to study the characteristics of the spatial variation of vegetation in the Manasi River Basin from the two scales of region and pixel. The trend analysis result and Hurst index were combined to study the sustainability characteristics of NDVI pattern in Manasi River Basin. The response of NDVI to meteorological factors was analyzed from two aspects of temperature and precipitation. The results indicate that:(1) during 2000-2015, the NDVI in Manasi River Basin showed the weak growth trend, with a growth rate of 0.044/decade; (2) the areas of vegetation improvement in the Manasi River Basin accounted for 42.03% of the total area, 55.88% of the total area without significant change, the significant degradation area accounted for only 2.09% of the total area, the overall ecological environment in the study area had been improved; (3) according to the Hurst index, NDVI changes were sustainable in most regions of the study area, but were anti-sustainability in some regions; the area of sustainable improvement accounted for 52.81% of the total area, the area of continuous degradation was 29.54%, and the area where the future trend of change could not be determined accounted for 15.87%; (4) the results of correlation analysis showed that NDVI was positively correlated with precipitation and negatively correlated with average temperature, suggesting that the effect of precipitation on NDVI was higher than average temperature.