[1]FU Jianxin.Temporal and Spatial Changes of NDVI of Different Land Covers and Their Responses to Temperature and Precipitation in the Yellow River Basin of Shanxi[J].Research of Soil and Water Conservation,2023,30(03):364-372.[doi:10.13869/j.cnki.rswc.2023.03.005]
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
30
Number of periods:
2023 03
Page number:
364-372
Column:
Public date:
2023-04-10
- Title:
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Temporal and Spatial Changes of NDVI of Different Land Covers and Their Responses to Temperature and Precipitation in the Yellow River Basin of Shanxi
- Author(s):
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FU Jianxin
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(Institute of Urban and Regional Development, Taiyuan Normal University, Jinzhong, Shanxi 030619, China)
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- Keywords:
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NDVI; land cover; ecological restoration; climate change; Yellow River Basin of Shanxi
- CLC:
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Q948.112
- DOI:
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10.13869/j.cnki.rswc.2023.03.005
- Abstract:
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[Objective]Understanding the temporal and spatial changes of NDVI of different land use types and their responses to temperature and precipitation is of great significance to the ecological protection, restoration and high-quality development of the Yellow River Basin in Shanxi. [Methods] Based on NDVI data from 1998 to 2018, the methods of mathematical such as NDVI change trend, coefficient of variation, and spatial autocorrelation were used to illustrate temporal and spatial variation characteristics of NDVI of different land covers in the Yellow River Basin of Shanxi and their relationship with temperature and precipitation. [Results] The NDVI change trend of the whole region and different land cover showed a positive trend, and the coverage of grassland and woodland was better than the overall level. NDVI as a whole showed a spatial distribution pattern of north-south arrays and mosaic of high and low levels, value of NDVI was high in Lüliang Mountain and Taiyue-Zhongtiao Mountain, and it was low in western plateau hills and Fenhe Valley. The spatial heterogeneity of the NDVI change trend was significant, and the vegetation was mainly improved significantly. The improvement trend of woodland had the best stability. NDVI presented obvious spatial agglomeration characteristics, among which the change trend of cultivated land NDVI was the most obvious. The sensitivity of NDVI of different land types to precipitation was stronger than that of temperature. [Conclusion] The spatial and temporal variation of NDVI varied significantly among different land use types in the Yellow River Basin of Shanxi Province, and there was a responsive relationship to temperature and precipitation. This research can provide more accurate basic data for vegetation restoration and its relationship with temperature and precipitation for the ecological protection and construction of the Yellow River Basin in Shanxi.