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Remote Sensing for Natural Resources    2024, Vol. 36 Issue (4) : 62-74     DOI: 10.6046/zrzyyg.2023238
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Ecological evolution of coal resource-based regions: A case study of Shanxi Province
LAI Shijiu1(), HU Jinshan1(), KANG Jianrong1, WANG Xiaobing2
1. School of Geography, Geomatics and Planning, Jiangsu Normal University, Xuzhou 221116, China
2. Sinosteel Maanshan General Institute of Mining Research Co.,Ltd., Maanshan 243000, China
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Abstract  

Shanxi Province is recognized as a significant coal base in China. The extensive and intensive coal mining activities have adversely affected the local ecology, rendering the research on ecological evolution in Shanxi Province highly significant. Utilizing the Google Earth Engine (GEE) platform, this study calculated the 2000-2022 remote sensing ecological index (RSEI) of Shanxi Province using images from Moderate Resolution Imaging Spectroradiometer (MODIS). The Mann-Kendall trend analysis method was employed to analyze the evolutionary trends of RSEI, while Pettitt mutation tests were conducted to identify RSEI mutations. Furthermore, the Pearson correlation coefficient was used to analyze the correlation between RSEI and climatic factors. The results indicate that Shanxi Province exhibited relatively high ecological quality on average during the period. However, the coal mining areas in the province displayed moderate ecological quality overall. The spatial distribution of precipitation and temperature can effectively account for the spatial distribution of RSEI. Most regions in Shanxi Province showed an upward trend in RSEI, with areas with reduced RSEI predominantly located in coal mining areas and basin areas with high population density and a developed economy. During the 23 years, the ecological quality in Shanxi Province has evolved from poor to moderate and then to relatively good, increased while fluctuating from 2000 to 2006, kept stable from 2006 to 2012, regressed after increase from 2012 to 2019, and continuously increased from 2019 to 2022. Similarly, the ecological quality in coal mining areas has shifted from relatively poor to relatively good, increased while fluctuating from 2000 to 2006, kept stable from 2006 to 2012, decreased while fluctuating from 2012 to 2019, and continuously increased from 2019 to 2022. The year 2010 is identified as a pivotal point for the ecological quality of Shanxi Province, with the ecological quality trending upward from 2000 to 2010 and comprehensively improving after 2010 across the province and its coal mining areas. The interannual variations in precipitation generally produce positive impacts on the ecological quality, while the variations in interannual temperature exert insignificant impacts.
Keywords remote sensing ecological index      ecological assessment      ecological quality mutation      Shanxi Province      national planning coal mining area     
ZTFLH:  TP79  
Issue Date: 23 December 2024
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Shijiu LAI
Jinshan HU
Jianrong KANG
Xiaobing WANG
Cite this article:   
Shijiu LAI,Jinshan HU,Jianrong KANG, et al. Ecological evolution of coal resource-based regions: A case study of Shanxi Province[J]. Remote Sensing for Natural Resources, 2024, 36(4): 62-74.
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https://www.gtzyyg.com/EN/10.6046/zrzyyg.2023238     OR     https://www.gtzyyg.com/EN/Y2024/V36/I4/62
Fig.1  Distribution map of topography and coal mining areas in Shanxi Province
Fig.2  Distribution map of precipitation and temperature in Shanxi Province
年份 NDVI
贡献度		 NDBSI
贡献度		 WET
贡献度		 LST
贡献度		 特征值
占比/%
2000年 0.622 -0.451 0.445 -0.461 87.69
2001年 0.588 -0.548 0.456 -0.382 89.41
2002年 0.554 -0.512 0.443 -0.485 82.82
2003年 0.534 -0.603 0.382 -0.453 83.08
2004年 0.563 -0.649 0.397 -0.323 80.37
2005年 0.563 -0.609 0.373 -0.417 86.23
2006年 0.539 -0.612 0.369 -0.445 83.55
2007年 0.592 -0.585 0.371 -0.412 84.15
2008年 0.579 -0.542 0.352 -0.498 86.20
2009年 0.557 -0.607 0.380 -0.422 83.65
2010年 0.550 -0.572 0.364 -0.488 88.18
2011年 0.574 -0.563 0.374 -0.461 83.86
2012年 0.608 -0.573 0.354 -0.421 76.92
2013年 0.591 -0.612 0.355 -0.387 75.86
2014年 0.545 -0.580 0.337 -0.503 84.39
2015年 0.570 -0.591 0.371 -0.434 83.32
2016年 0.597 -0.584 0.314 -0.450 78.80
2017年 0.549 -0.611 0.312 -0.478 86.51
2018年 0.556 -0.596 0.388 -0.430 69.41
2019年 0.515 -0.619 0.322 -0.498 81.57
2020年 0.509 -0.659 0.370 -0.413 80.26
2021年 0.554 -0.574 0.346 -0.494 83.40
2022年 0.513 -0.604 0.360 -0.493 80.06
Tab.1  The index contributions and eigenvalue percentage of the first principal component
参数 NDVI
贡献度		 NDBSI
贡献度		 WET
贡献度		 LST
贡献度
平均值 0.564 -0.585 0.371 -0.446
标准差 0.029 0.044 0.038 0.045
Tab.2  The mean and standard deviation of index contributions of the first principal component
Fig.3  Distribution map of mean of RSEI in Shanxi Province from 2000 to 2022
Fig.4  The annual average RSEI change trend chart of Shanxi Province, coal mining area and non-coal mining area from 2000 to 2022
Fig.5  Distribution map of evolution trend of RSEI in Shanxi Province from 2000 to 2022
Fig.6  Distribution map of mutation of RSEI in Shanxi Province from 2000 to 2022
Fig.7  Distribution map of RSEI of Shanxi Province
Fig.8  Distribution map of RSEI level difference in Shanxi Province
Fig.9  Distribution map of the correlation between RSEI and precipitation in Shanxi Province
Fig.10  Distribution map of the correlation between RSEI and temperature in Shanxi Province
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