Ms. Nan Lin Profile

Nan Lin

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Proceedings Article | 19 January 2024 Paper

Remote sensing monitoring and analysis of ecological environment changes in the southern sandy grassland area of Shenfu coalfield

Congcong Li, Lu Ma, Nan Lin

Proceedings Volume 12980, 1298012 (2024) https://doi.org/10.1117/12.3020880

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The southern part of Shenfu Coalfield is located in the hinterland of the Mu Us Desert. Due to long-term coal mining, the geological structure has been damaged, causing serious impacts on the ecological environment of the mining area. Under the comprehensive factors of global warming, northward movement of precipitation lines, and ecological restoration and protection within the mining area, the overall ecological environment change in the area is showing a positive trend, but there are still negative changes in some areas. In order to conduct a detailed analysis of the impact of underground coal mining in Shenfu Coalfield on the ecological environment changes in the sandy grassland area, Landsat 8 satellite remote sensing data from the research area since 2014 were selected. Through remote sensing image preprocessing and indicator parameter calculation, the normalized vegetation index (NDVI) and vegetation coverage (FVC) were compared and analyzed to analyze the ecological environment changes in the area, Overall, the vegetation coverage in the study area reflects a downward trend from 2014 to 2016, and an overall upward trend from 2016 to 2022. Comprehensive analysis shows that changes in vegetation ecological environment are influenced by coal mining subsidence, groundwater level decline, land occupation damage, and artificial surface engineering activities. Overall, the increase in natural precipitation and artificial ecological environment restoration measures since 2016 are the main factors for the gradual improvement of the ecological environment in mining areas.

Proceedings Article | 30 August 2023 Paper

Identification of mining environmental problems in high and cold plateau regions based on multisource remote sensing

Congcong Li, Tong Wang, Nan Lin, Xin Zhao

Proceedings Volume 12797, 127972E (2023) https://doi.org/10.1117/12.3007378

KEYWORDS: Mining, Remote sensing, Vegetation, Environmental sensing, Environmental monitoring, Deformation, Soil science, Unmanned aerial vehicles, Soil contamination, Temperature metrology

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The Jvhugeng mining area in the Muli Coal field is situated in the high and cold region of the Qinghai-Tibet Plateau. Years of open-pit coal mining have resulted in severe damage to the surrounding ecological environment. Therefore, it is imperative to conduct mine environmental restoration and treatment in order to achieve the goal of ecological environmental protection. To ensure the safe and efficient implementation of subsequent mine environmental restoration and treatment projects, it is essential to accurately and efficiently identify the geological environmental issues and establish clear restoration and treatment goals. Considering the unique natural conditions and geological environment of the plateau alpine mining area, multi-source technologies, such as satellite remote sensing and UAV remote sensing, are employed as the core components. These technologies are complemented by conventional geological surveying and sampling, as well as testing methods. By fully utilizing the technical characteristics of multi-spectral, INSAR, thermal infrared, and other remote sensing technologies, the identification and monitoring of geological hazards, vegetation destruction, water distribution, abnormally high temperature of residual coal on the surface, and soil control in the Jvhugeng mining area have been undertaken. The overall results of the identification process have been positive, providing a scientific basis for mine environmental restoration and control. This achievement holds great significance in ensuring the safe and efficient development of mine restoration and control projects, as well as achieving the desired effects of ecological restoration and control.

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