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- Title
Land Use Changes in High Cold-altitude Mining Area Based on Remote Sensing Technology.
- Authors
DU Qingsong; LI Guoyu; PENG Wanlin; CHAI Mingtang; ZHOU Yu; CHEN Dun
- Abstract
The environmental damage caused by mining activities is often quantified by land use change, which is a good way to reveal the extent the environment being impacted on a spatial and temporal scale. In order to understand the impact of mining activities in the high cool-altitude areas on environment, a high-altitude open pit mine in Tianshan Mountain, Xinjiang Prefecture, was taken as the research object. Integrating the spectral characteristics and texture information of ground objects, the supervised classification method and object-oriented classification method were used to classify the Landsat 7/8 Satellite RS images which was obtained in the different years including 2000, 2005, 2010, 2015 and 2019, totally divided four periods. The accuracy of the classification results was verified, and the spatial distribution characteristics and temporal variation characteristics of land use were analyzed by GIS statistical analysis method, for the purpose to reveal the impact of mining activities on the special environment ranges. The results show that the classification accuracy of the supervised classification using SVM algorithm is as high as 95%. The intensity and direction of land use transfer in mining area are quite different before and after mining. The bare land and grassland are basically stable before mining, and the glaciers, snow and water are transferred to each other. After mining for a long time, the intensity of mutual transfer among various types increasing, the direction is diverse, and changes over a long time. By 2019, the land use in the mining area has basically returned to the level of 2000, the initial state, and the transfer of land use tends to a new dynamic balance.
- Publication
Environmental Science & Technology (10036504), 2020, Vol 43, Issue 12, p185
- ISSN
1003-6504
- Publication type
Article
- DOI
10.19672/j.cnki.1003-6504.2020.12.025