Long-term NDVI spatio-temporal variation trend and its response to climate in Xishan coalfield, Shanxi province

doi:10.13474/j.cnki.11-2246.2021.0282

Abstract

Abstract: The study of vegetation changes in mining disturbed areas can provide a theoretical basis for ecological restoration in mining areas. This paper takes the Xishan coalfield in Shanxi province as the research area, establishes a comparative experimental area, and uses MODIS/NDVI (2001-2019) to combine the temperature and precipitation climate factors of the same period to analyze the temporal and spatial changes of the vegetation index and the relationship with meteorological factors. The comparison is carried out to explore the vegetation changes in the areas disturbed by mining. The research results show that:① In the past 19 years, the vegetation in the Xishan coalfield, the indirect impact area and the verification area showed an increasing trend, but the average NDVI of the Xishan coalfield was 11.42% lower than that in the verification area. ② The growth rate of vegetation in Xishan coalfield is -5.53% compared with natural ecological conditions. ③ The NDVI values of the Xishan coalfield and the verification area are both affected by two climatic factors, temperature and precipitation, but the correlation with precipitation is higher, that is, it is more affected by precipitation.

Key words: mining disturbance, Xishan coalfield, comparative experiment area, MODIS/NDVI, climate driven

CLC Number:

P237

QI Danning, HU Zhengjun, ZHAO Shangmin. Long-term NDVI spatio-temporal variation trend and its response to climate in Xishan coalfield, Shanxi province[J]. Bulletin of Surveying and Mapping, 2021, 0(9): 98-102,107.

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