{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,3]],"date-time":"2026-04-03T13:17:19Z","timestamp":1775222239780,"version":"3.50.1"},"reference-count":75,"publisher":"MDPI AG","issue":"21","license":[{"start":{"date-parts":[[2020,10,30]],"date-time":"2020-10-30T00:00:00Z","timestamp":1604016000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Fund of the Jiangxi Talent program","award":["2120800004"],"award-info":[{"award-number":["2120800004"]}]},{"name":"The Start-up Fund for Scientific Research of the East China University of Technology","award":["DHTP2018001"],"award-info":[{"award-number":["DHTP2018001"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Rare earth elements (REEs) are widely used in various industries. The open-pit mining and chemical extraction of REEs in the weathered crust in southern Jiangxi, China, since the 1970s have provoked severe damages to the environment. After 2010, different restorations have been implemented by various enterprises, which seem to have a spatial variability in both management techniques and efficiency from one mine to another. A number of vegetation indices, e.g., normalized difference vegetation index (NDVI), soil-adjusted vegetation index (SAVI), enhanced vegetation index (EVI) and atmospherically resistant vegetation index (ARVI), can be used for this kind of monitoring and assessment but lack sensitivity to subtle differences. For this reason, the main objective of this study was to explore the possibility to develop new, mining-tailored remote sensing indicators to monitor the impacts of REE mining on the environment and to assess the effectiveness of its related restoration using multitemporal Landsat data from 1988 to 2019. The new indicators, termed mining and restoration assessment indicators (MRAIs), were developed based on the strong contrast of spectral reflectance, albedo, land surface temperature (LST) and tasseled cap brightness (TCB) of REE mines between mining and postmining restoration management. These indicators were tested against vegetation indices such as NDVI, EVI, SAVI and generalized difference vegetation index (GDVI), and found to be more sensitive. Of similar sensitivity to each other, one of the new indicators was employed to conduct the restoration assessment of the mined areas. Six typically managed mines with different restoration degrees and management approaches were selected as hotspots for a comparative analysis to highlight their temporal trajectories using the selected MRAI. The results show that REE mining had experienced a rapid expansion in 1988\u20132010 with a total mined area of about 66.29 km2 in the observed counties. With implementation of the post-2010 restoration measures, an improvement of varying degrees in vegetation cover in most mines was distinguished and quantified. Hence, this study with the newly developed indicators provides a relevant approach for assessing the sustainable exploitation and management of REE resources in the study area.<\/jats:p>","DOI":"10.3390\/rs12213558","type":"journal-article","created":{"date-parts":[[2020,10,30]],"date-time":"2020-10-30T21:34:47Z","timestamp":1604093687000},"page":"3558","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":33,"title":["Mining and Restoration Monitoring of Rare Earth Element (REE) Exploitation by New Remote Sensing Indicators in Southern Jiangxi, China"],"prefix":"10.3390","volume":"12","author":[{"given":"Lifeng","family":"Xie","sequence":"first","affiliation":[{"name":"Key Laboratory of Digital Lands and Resources and Faculty of Earth Sciences, East China University of Technology, Nanchang 330013, China"}]},{"given":"Weicheng","family":"Wu","sequence":"additional","affiliation":[{"name":"Key Laboratory of Digital Lands and Resources and Faculty of Earth Sciences, East China University of Technology, Nanchang 330013, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0662-8045","authenticated-orcid":false,"given":"Xiaolan","family":"Huang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Digital Lands and Resources and Faculty of Earth Sciences, East China University of Technology, Nanchang 330013, China"}]},{"given":"Penghui","family":"Ou","sequence":"additional","affiliation":[{"name":"Key Laboratory of Digital Lands and Resources and Faculty of Earth Sciences, East China University of Technology, Nanchang 330013, China"}]},{"given":"Ziyu","family":"Lin","sequence":"additional","affiliation":[{"name":"Key Laboratory of Digital Lands and Resources and Faculty of Earth Sciences, East China University of Technology, Nanchang 330013, China"}]},{"given":"Wang","family":"Zhiling","sequence":"additional","affiliation":[{"name":"264 Geological Team of Jiangxi Nuclear Industry, Ganzhou 341000, China"}]},{"given":"Yong","family":"Song","sequence":"additional","affiliation":[{"name":"264 Geological Team of Jiangxi Nuclear Industry, Ganzhou 341000, China"}]},{"given":"Tao","family":"Lang","sequence":"additional","affiliation":[{"name":"264 Geological Team of Jiangxi Nuclear Industry, Ganzhou 341000, China"}]},{"given":"Wenchao","family":"Huangfu","sequence":"additional","affiliation":[{"name":"Key Laboratory of Digital Lands and Resources and Faculty of Earth Sciences, East China University of Technology, Nanchang 330013, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3056-3069","authenticated-orcid":false,"given":"Yang","family":"Zhang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Digital Lands and Resources and Faculty of Earth Sciences, East China University of Technology, Nanchang 330013, China"}]},{"given":"Xiaoting","family":"Zhou","sequence":"additional","affiliation":[{"name":"Key Laboratory of Digital Lands and Resources and Faculty of Earth Sciences, East China University of Technology, Nanchang 330013, China"}]},{"given":"Xiao","family":"Fu","sequence":"additional","affiliation":[{"name":"Key Laboratory of Digital Lands and Resources and Faculty of Earth Sciences, East China University of Technology, Nanchang 330013, China"}]},{"given":"Jie","family":"Li","sequence":"additional","affiliation":[{"name":"Key Laboratory of Digital Lands and Resources and Faculty of Earth Sciences, East China University of Technology, Nanchang 330013, China"}]},{"given":"Jingheng","family":"Jiang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Digital Lands and Resources and Faculty of Earth Sciences, East China University of Technology, Nanchang 330013, China"}]},{"given":"Ming","family":"Zhang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Digital Lands and Resources and Faculty of Earth Sciences, East China University of Technology, Nanchang 330013, China"}]},{"given":"Zhenjiang","family":"Zhang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Digital Lands and Resources and Faculty of Earth Sciences, East China University of Technology, Nanchang 330013, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1998-2916","authenticated-orcid":false,"given":"Yaozu","family":"Qin","sequence":"additional","affiliation":[{"name":"Key Laboratory of Digital Lands and Resources and Faculty of Earth Sciences, East China University of Technology, Nanchang 330013, China"}]},{"given":"Shanling","family":"Peng","sequence":"additional","affiliation":[{"name":"Key Laboratory of Digital Lands and Resources and Faculty of Earth Sciences, East China University of Technology, Nanchang 330013, China"}]},{"given":"Chongjian","family":"Shao","sequence":"additional","affiliation":[{"name":"Key Laboratory of Digital Lands and Resources and Faculty of Earth Sciences, East China University of Technology, Nanchang 330013, China"}]},{"given":"Yonghui","family":"Bai","sequence":"additional","affiliation":[{"name":"Key Laboratory of Digital Lands and Resources and Faculty of Earth Sciences, East China University of Technology, Nanchang 330013, China"}]}],"member":"1968","published-online":{"date-parts":[[2020,10,30]]},"reference":[{"key":"ref_1","first-page":"65","article-title":"Current mining situation and potential development of rare earth in China","volume":"31","author":"Cheng","year":"2010","journal-title":"Chin. 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