Remote sensing-based dynamic monitoring and ecological restoration effect assessment of abandoned open-pit mines in the Yangtze River economic belt within Hubei Province
SUN Yaqin1,2,3(), DI Baogang4, XING Yu1, AN Na1(), ZHANG Xian1
1. China Aero Geophysical Survey and Remote Sensing Center for Natural Resources, Beijing 100083, China 2. Key Laboratory of Airborne Geophysics and Remote Sensing Geology, Ministry of Nature Resources, Beijing 100083, China 3. Technology Innovation Center for Geohazards Identification and Monitoring with Earth Observation System, Ministry of Natural Resources of the People’s Republic of China, Beijing 100083, China 4. China Siwei Surveying and Mapping Technology Co., Ltd., Beijing 100083, China
The Yangtze River economic belt (YREB), spanning the east, middle, and west regions of China, serves as a pioneering demonstration belt for the construction of ecological civilization. Hubei Province, a member of the YREB, holds abundant mineral resources. Its long-term exploitation of mineral resources has caused ecosystem damage and social stability disruption, necessitating ecological restoration of abandoned open-pit mines. However, few studies concern the systematic tracking, monitoring, and analysis of the ecological restoration of abandoned open-pit mines in the YREB within Hubei Province. Based on the remote sensing data from the domestic high-resolution satellite from 2017 to 2022, and utilizing human-computer interaction interpretation, this study monitored the distributions and ecological restoration of abandoned open-pit mines within 10 km on both sides of the mainstems and major tributaries (Hanjiang River and Qingjiang River) in the YREB within Hubei Province. The results indicate that by the end of 2017, 537 patches of abandoned open-pit mines had been identified in the study area, involving 283 mines with a total area of 2 225.19 hm2. The monitoring results of dynamic changes from 2018 to 2022 show that the ecological restoration and treatment area of abandoned open-pit mines increased from 291.01 hm2 in 2018 to 1 741.19 hm2 in 2022, manifesting a continuously rising treatment rate, suggesting overall improved ecological restoration and treatment results. Using the remote sensing ecological index (RSEI) values from 2017 to 2022, this study assessed the ecological restoration effects of abandoned open-pit mines. The assessment results reveal that the average RSEI value for the patches increased from 0.397 7 in 2017 to 0.423 9 in 2022, with a growth rate of 6.59 %, suggesting significantly improved ecological conditions and restoration effects. Overall, the monitoring and assessment results of the dynamic changes in ecological restoration of abandoned open-pit mines in the study area provide valuable data and methodological insights for monitoring abandoned open-pit mines in Hubei Province and other regions in China, highlighting the significance of this study.
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SUN Yaqin, DI Baogang, XING Yu, AN Na, ZHANG Xian. Remote sensing-based dynamic monitoring and ecological restoration effect assessment of abandoned open-pit mines in the Yangtze River economic belt within Hubei Province. Remote Sensing for Natural Resources, 2025, 37(3): 32-44.
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