关键词: 露天煤矿, FVC, RUSLE, 土地分类, 土壤侵蚀

Abstract: Mine ecological environment monitoring is the basis for guiding mine ecological restoration and green mine construction,in order to reveal the spatio-temporal change characteristics and causes of typical open pit mining areas,based on Landsat imagery from 1986—2023 and land classification data,and using Theil-Sen median and Mann-Kendall trend tests,we explored the spatial and temporal variation characteristics of vegetation cover,coal dust,soil erosion degree and land classification in the Antaibao and Anjialing mining areas from 1986 to 2023 using Theil-Sen median and Mann-Kendall trend tests.The results show that: The vegetation cover in the mining area shows a trend of decreasing and then increasing; the change trend of coal dust is not significant,and the coal mining face and transportation road are the areas with high incidence of coal and carbon dust; the soil erosion degree in the mining area shows a trend of increasing and then decreasing,and the soil erosion did not show a continuous expansion in the case of production capacity expansion in 2008; and the change of land class trajectory in the mining area is dominated by the transformation of farmland and grassland into the impervious layer,and the change of trajectory in the mining area is dominated by the transformation of farmland and grassland into the impervious layer.This study reveals the ecological evolution of typical surface coal mines in all aspects,and provides scientific references for the sustainable development of green mines and the response to global climate change.

Key words: open-pit coal mine, FVC, RUSLE, land classification, soil erosion