Evaluation and dynamic monitoring of ecological environment quality in mining area based on improved CRSEI index model

被引:7
作者
Liu, Yajing [1 ,3 ,4 ,5 ]
Liu, Hongjian [1 ]
Yan, Chaoqun [2 ]
Feng, Zhengwen [1 ]
Zhou, Shuai [1 ]
机构
[1] North China Univ Sci & Technol, Coll Min Engn, Tangshan 063210, Peoples R China
[2] Nanjing Univ Aeronaut & Astronaut, Jincheng Coll, Nanjing 211156, Peoples R China
[3] Tangshan Key Lab Resources & Environm Remote Sensi, Tangshan 063210, Peoples R China
[4] Hebei Ind Technol Inst Mine Ecol Remediat, Tangshan 063210, Peoples R China
[5] Hebei Key Lab Min Dev & Secur Technol, Tangshan 063210, Peoples R China
基金
中国国家自然科学基金;
关键词
CRSEI; Open-pit mining area; Ecological quality assessment; Principal component analysis;
D O I
10.1016/j.heliyon.2023.e20787
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Large-scale open-pit mining in mining areas will cause serious damage to the ecological environment. Building a "green mine" is an essential part of implementing sustainable development. In order to explore the changing characteristics of the environmental quality of the open-pit mining area and provide a scientific basis for improving the ecological environment of the mining area. Taking Sijiying open-pit mining area as the research area, based on four Landsat images from 2000 to 2022, the four index components of greenness, humidity, dryness and heat were integrated, and an improved remote sensing ecological index CRSEI was constructed by principal component analysis to dynamically evaluate and monitor the ecological environment quality of the mining area. The results show that the average correlation between CRSEI and the index components is higher than the average correlation between the components, indicating that it has a favorable expression effect on the ecological quality of the mining area. The ecological environmental quality of the study area experienced a shift to the poor grade, and the poor ecological quality area was mainly distributed in industrial and mining land and construction land, with the mean CRSEI of 0.668, 0.474, 0.460 and 0.494, respectively. The results of dynamic monitoring showed that the proportion of ecological improvement area (41.43 %) was greater than that of ecological deterioration area (33.29 %) in the study area in the past 22 years, and additional restoration efforts should be made to achieve sustainable development of the ecological environment.
引用
收藏
页数:16
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