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Effects of Underground Coal Mining on Soil Spatial Water Content Distribution and Plant Growth Type in Northwest China

[Image: see text] The impact of coal mining subsidence on surface ecology involves the influence of several ecological elements such as water, soil, and vegetation, which is systematic and complex. Given the unclear understanding of the synergistic change patterns of the water–soil–vegetation ecolog...

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Autores principales: Zhang, Kai, Yang, Kang, Wu, Xingtong, Bai, Lu, Zhao, Jiangang, Zheng, Xinhui
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2022
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9178752/
https://www.ncbi.nlm.nih.gov/pubmed/35694461
http://dx.doi.org/10.1021/acsomega.2c01369
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author Zhang, Kai
Yang, Kang
Wu, Xingtong
Bai, Lu
Zhao, Jiangang
Zheng, Xinhui
author_facet Zhang, Kai
Yang, Kang
Wu, Xingtong
Bai, Lu
Zhao, Jiangang
Zheng, Xinhui
author_sort Zhang, Kai
collection PubMed
description [Image: see text] The impact of coal mining subsidence on surface ecology involves the influence of several ecological elements such as water, soil, and vegetation, which is systematic and complex. Given the unclear understanding of the synergistic change patterns of the water–soil–vegetation ecological elements in the influence of coal mining in the west, this paper investigates the impact of coal mining on the surface ecology, especially the distribution of soil water content (SWC). In 2020, this study collected 3000 soil samples from 60 sampling points (at depth of 0–10 m) and tested the SWC. All samples come from three different temporal and spatial areas of coal mining subsidence in the desert mining area of Northwest China where soil types are mainly aridisols. At the same time, the interactions among deep SWC and surface soil physical and chemical properties, surface SWC and soil fertility, and pH were analyzed. The spatial variability of soil moisture is reflected by kriging interpolation, and SWC values at different depths are predicted as a basis for monitoring the environmental impact of different coal mining subsidence years. The research has shown that the ground subsidence leads to a decrease in SWC value and changes in surface soil pH, physical and chemical properties, and covering vegetation, which have occurred from the beginning of coal mining. The impact of coal mining on the SWC of the unsaturated zone is mainly at the depth of 0–6 m, where SWC is not directly related to the nutrient content of the surface soil. The overall settlement of the ground will stir up simultaneous decline in the quality of deep SWC and topsoil. The findings of this investigation suggest that changes in the soil structure caused by coal mining subsidence are the key factor in SWC loss. Timely monitoring and repairing 0–6 m ground fissures, as well as selecting shrubs on the surface is the best choice for the restoration of the ecological environment and prevention of soil erosion in this area.
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spelling pubmed-91787522022-06-10 Effects of Underground Coal Mining on Soil Spatial Water Content Distribution and Plant Growth Type in Northwest China Zhang, Kai Yang, Kang Wu, Xingtong Bai, Lu Zhao, Jiangang Zheng, Xinhui ACS Omega [Image: see text] The impact of coal mining subsidence on surface ecology involves the influence of several ecological elements such as water, soil, and vegetation, which is systematic and complex. Given the unclear understanding of the synergistic change patterns of the water–soil–vegetation ecological elements in the influence of coal mining in the west, this paper investigates the impact of coal mining on the surface ecology, especially the distribution of soil water content (SWC). In 2020, this study collected 3000 soil samples from 60 sampling points (at depth of 0–10 m) and tested the SWC. All samples come from three different temporal and spatial areas of coal mining subsidence in the desert mining area of Northwest China where soil types are mainly aridisols. At the same time, the interactions among deep SWC and surface soil physical and chemical properties, surface SWC and soil fertility, and pH were analyzed. The spatial variability of soil moisture is reflected by kriging interpolation, and SWC values at different depths are predicted as a basis for monitoring the environmental impact of different coal mining subsidence years. The research has shown that the ground subsidence leads to a decrease in SWC value and changes in surface soil pH, physical and chemical properties, and covering vegetation, which have occurred from the beginning of coal mining. The impact of coal mining on the SWC of the unsaturated zone is mainly at the depth of 0–6 m, where SWC is not directly related to the nutrient content of the surface soil. The overall settlement of the ground will stir up simultaneous decline in the quality of deep SWC and topsoil. The findings of this investigation suggest that changes in the soil structure caused by coal mining subsidence are the key factor in SWC loss. Timely monitoring and repairing 0–6 m ground fissures, as well as selecting shrubs on the surface is the best choice for the restoration of the ecological environment and prevention of soil erosion in this area. American Chemical Society 2022-05-23 /pmc/articles/PMC9178752/ /pubmed/35694461 http://dx.doi.org/10.1021/acsomega.2c01369 Text en © 2022 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Zhang, Kai
Yang, Kang
Wu, Xingtong
Bai, Lu
Zhao, Jiangang
Zheng, Xinhui
Effects of Underground Coal Mining on Soil Spatial Water Content Distribution and Plant Growth Type in Northwest China
title Effects of Underground Coal Mining on Soil Spatial Water Content Distribution and Plant Growth Type in Northwest China
title_full Effects of Underground Coal Mining on Soil Spatial Water Content Distribution and Plant Growth Type in Northwest China
title_fullStr Effects of Underground Coal Mining on Soil Spatial Water Content Distribution and Plant Growth Type in Northwest China
title_full_unstemmed Effects of Underground Coal Mining on Soil Spatial Water Content Distribution and Plant Growth Type in Northwest China
title_short Effects of Underground Coal Mining on Soil Spatial Water Content Distribution and Plant Growth Type in Northwest China
title_sort effects of underground coal mining on soil spatial water content distribution and plant growth type in northwest china
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9178752/
https://www.ncbi.nlm.nih.gov/pubmed/35694461
http://dx.doi.org/10.1021/acsomega.2c01369
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