[1]WU Liangxu,WANG Han,SHAO Huaiyong,et al.Spatiotemporal Pattern of Vegetation and Its Response to Climate Change in the Western Sichuan Plateau[J].Research of Soil and Water Conservation,2021,28(01):171-178.
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Spatiotemporal Pattern of Vegetation and Its Response to Climate Change in the Western Sichuan Plateau
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
28
Number of periods:
2021 01
Page number:
171-178
Column:
Public date:
2021-01-10
- Title:
- Spatiotemporal Pattern of Vegetation and Its Response to Climate Change in the Western Sichuan Plateau
- Keywords:
- vegetation coverage; ESTARFM; fusion data; climate change
- CLC:
- Q948.1
- DOI:
- -
- Abstract:
- The western Sichuan Plateau, as an important ecological barrier located on the eastern edge of the Qinghai—Tibet Plateau, is eco-environmental fragile and belongs to a sensitive area in globally change. However, due to the lack of MODIS data before 2000, studies on vegetation climate response in the western Sichuan Plateau were restricted based on a large range of higher resolution data. In order to study its long-term spatiotemporal pattern of vegetation and its response to climate change from 1995 to 2015, we employed MODIS NDVI(500 m)data to obtain high spatial resolution data(500 m)of 1995 GIMMS NDVI3g(8 km)of the study area based on the Enhanced Adaptive Reflective Temporal Adaptive Reflectance Fusion Model(ESTARFM), combined annual average temperature with annual precipitation to study the spatial and temporal pattern of vegetation and its response to climate change in the Western Sichuan Plateau from 1995 to 2015. The results show that:(1)the GIMMS NDVI3g fused by ESTARFM is in relatively good agreement with the actual MODIS NDVI data; the fusion results can be applied in estimating the vegetation of the Western Sichuan Plateau with complex terrain;(2)from 1995 to 2015, the vegetation cover of the Western Sichuan Plateau distributed a vertical characteristic which increased first and then decreased and its variation presented the trend to become stable along the elevation gradient;(3)with respect to the spatial distribution of annual average temperature and annual precipitation in the Western Sichuan Plateau from 1995 to 2015, annual average temperature and annual precipitation in the west were lower than east; vegetation coverage was more sensitive to annual precipitation change than annual average temperature change; the area where vegetation coverage was positively related to annual average temperature accounted for 14.9%, the area where vegetation coverage was positively related to annual precipitation accounted for about 35.4%. In general, the vegetation coverage of Western Sichuan Plateau is in good condition and has a stable change tendency. The influence caused by annual precipitation on vegetation change is more obvious than by average annual temperature.
- References:
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Last Update:
2021-01-15