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Analysis of spatial and temporal changes of vegetation cover and its driving forces in the Huainan mining area

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Abstract

The Huainan mining area is rich in coal resources and has sparse vegetation and many collapsed waterways. Large-scale and long-term underground coal mining has led to a fragile ecological environment in the mining area, and it is urgent to solve the contradiction between coal development and ecological environmental protection. The Huainan mining area was selected as the research object, and the vegetation cover was extracted using 10-phase Landsat multispectral remote sensing images from 1989 to 2021 to analyze its spatial and temporal changes and driving forces to provide a scientific basis for the guided restoration of the ecological environment in the region. Combined with the image dichotomous model, regression slope, correlation coefficient, and standard deviation of vegetation cover grid points in different time series, standard deviation ellipse, and center of gravity migration, we analyzed the spatial and temporal variation pattern of vegetation cover for 33 years and revealed the responses of temperature, precipitation, population density, GDP, and afforestation area to vegetation cover. Results show the following: (1) from 1989 to 2021, the overall vegetation cover in the study area tended to decrease with 36.48% of the areas increasing and 63.52% of the areas decreasing, primarily in the very low and medium range; (2) the center of gravity of different types of vegetation cover generally shifted from north to south during 33 years; (3) climate and social activities had a substantial effect on the spatial heterogeneity of the vegetation cover in the study area. There is significant spatial heterogeneity in the effects of climate and social activities on the vegetation in the study area with human activities negatively correlating with vegetation cover. Mining activities are the primary driver of the evolution of regional vegetation cover, with climate change serving as a secondary driver.

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The data that support the findings of this study are available from the corresponding author upon reasonable request.

Funding

Natural Science Research Project of the Anhui Higher Education Institution (KJ2021a0423), University-level Key Projects of Anhui University of Science and Technology (xjzd2020-04), Huainan closed mine geological ecological environment assessment and comprehensive treatment technology research (HNKY-PG-WT-2021-260), The Open Fund of State Key Laboratory of Water Resource Protection and Utilization in Coal Mining (WPUKFJJ2019-16), Key Laboratory for Digital Land and Resources of Jiangxi Province, East China University of Technology, Nanchang (DLLJ330013), and National Natural Science Foundation of China (41572333).

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XZ: methodology, investigation, writing–original draft, XC: formal analysis, LL: investigation, YS: investigation, XY: investigation, HZ: investigation, YC: methodology, SA: methodology, LY: methodology.

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Correspondence to Ying Liu.

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All the authors reviewed and approved the manuscript for publication.

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The authors declare no competing interests.

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Zhang, X., Liu, Y., Chen, X. et al. Analysis of spatial and temporal changes of vegetation cover and its driving forces in the Huainan mining area. Environ Sci Pollut Res 29, 60117–60132 (2022). https://doi.org/10.1007/s11356-022-19921-5

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  • DOI: https://doi.org/10.1007/s11356-022-19921-5

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