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Evaluation of resource and environmental carrying capacity in rare earth mining areas in China

Rare earth elements are a nonrenewable and important strategic resource, and China is rich in these elements. However, the substantial exploitation of these resources has caused the migration, diffusion, transformation and accumulation of pollution sources, which in turn has a profound impact on the...

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Autores principales: Bai, Jingjing, Xu, Xin, Duan, Yaoting, Zhang, Guangyu, Wang, Zhe, Wang, Lu, Zheng, Chunli
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9005666/
https://www.ncbi.nlm.nih.gov/pubmed/35414684
http://dx.doi.org/10.1038/s41598-022-10105-2
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author Bai, Jingjing
Xu, Xin
Duan, Yaoting
Zhang, Guangyu
Wang, Zhe
Wang, Lu
Zheng, Chunli
author_facet Bai, Jingjing
Xu, Xin
Duan, Yaoting
Zhang, Guangyu
Wang, Zhe
Wang, Lu
Zheng, Chunli
author_sort Bai, Jingjing
collection PubMed
description Rare earth elements are a nonrenewable and important strategic resource, and China is rich in these elements. However, the substantial exploitation of these resources has caused the migration, diffusion, transformation and accumulation of pollution sources, which in turn has a profound impact on the ecological environment of mining areas. Accurate evaluations of resource and environmental carrying capacity (RECC) are important for the green development of mining areas. In this paper, the fuzzy comprehensive evaluation method based on the combination of the AHP (Analytic Hierarchy Process) and entropy methods is used to study the RECC of mine areas in terms of both support capacity and pressure. The Bayan Obo mine in Inner Mongolia, the Longnan mine in Jiangxi, the Weishan mine in Shandong, the Mianning mine in Sichuan, the Pingyuan mine in Guangdong, and the Chongzuo mine in Guangxi, which are typical representative mines, were selected for a horizontal comparison. The results show that, with the exception of the Bayan Obo mine, the support index was greater than the pressure index in terms of mining and human activities in all mining areas. The RECC index ranked order for the mining areas was Bayan Obo > Longnan > Mianning > Pingyuan > Weishan > Chongzuo. In addition, an obstacle degree model was used to identify and extract the main factors affecting the ecological quality of the mine sites. The ratio of investment in environmental pollution control to GDP was the most important factor, of all factors, which limited the improvement in the mine support index. Through the above research, we identified the main factors affecting the ecological carrying capacity of each mining area, providing a scientific basis for formulating corresponding environmental regulations and reducing the environmental pollution caused by rare earth mining.
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spelling pubmed-90056662022-04-15 Evaluation of resource and environmental carrying capacity in rare earth mining areas in China Bai, Jingjing Xu, Xin Duan, Yaoting Zhang, Guangyu Wang, Zhe Wang, Lu Zheng, Chunli Sci Rep Article Rare earth elements are a nonrenewable and important strategic resource, and China is rich in these elements. However, the substantial exploitation of these resources has caused the migration, diffusion, transformation and accumulation of pollution sources, which in turn has a profound impact on the ecological environment of mining areas. Accurate evaluations of resource and environmental carrying capacity (RECC) are important for the green development of mining areas. In this paper, the fuzzy comprehensive evaluation method based on the combination of the AHP (Analytic Hierarchy Process) and entropy methods is used to study the RECC of mine areas in terms of both support capacity and pressure. The Bayan Obo mine in Inner Mongolia, the Longnan mine in Jiangxi, the Weishan mine in Shandong, the Mianning mine in Sichuan, the Pingyuan mine in Guangdong, and the Chongzuo mine in Guangxi, which are typical representative mines, were selected for a horizontal comparison. The results show that, with the exception of the Bayan Obo mine, the support index was greater than the pressure index in terms of mining and human activities in all mining areas. The RECC index ranked order for the mining areas was Bayan Obo > Longnan > Mianning > Pingyuan > Weishan > Chongzuo. In addition, an obstacle degree model was used to identify and extract the main factors affecting the ecological quality of the mine sites. The ratio of investment in environmental pollution control to GDP was the most important factor, of all factors, which limited the improvement in the mine support index. Through the above research, we identified the main factors affecting the ecological carrying capacity of each mining area, providing a scientific basis for formulating corresponding environmental regulations and reducing the environmental pollution caused by rare earth mining. Nature Publishing Group UK 2022-04-12 /pmc/articles/PMC9005666/ /pubmed/35414684 http://dx.doi.org/10.1038/s41598-022-10105-2 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Bai, Jingjing
Xu, Xin
Duan, Yaoting
Zhang, Guangyu
Wang, Zhe
Wang, Lu
Zheng, Chunli
Evaluation of resource and environmental carrying capacity in rare earth mining areas in China
title Evaluation of resource and environmental carrying capacity in rare earth mining areas in China
title_full Evaluation of resource and environmental carrying capacity in rare earth mining areas in China
title_fullStr Evaluation of resource and environmental carrying capacity in rare earth mining areas in China
title_full_unstemmed Evaluation of resource and environmental carrying capacity in rare earth mining areas in China
title_short Evaluation of resource and environmental carrying capacity in rare earth mining areas in China
title_sort evaluation of resource and environmental carrying capacity in rare earth mining areas in china
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9005666/
https://www.ncbi.nlm.nih.gov/pubmed/35414684
http://dx.doi.org/10.1038/s41598-022-10105-2
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