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The long‐term effects of underground mining on the growth of tree, shrub, and herb communities in arid and semiarid areas in China
Author(s) -
Mi Jiaxin,
Yang Yongjun,
Hou Huping,
Zhang Shaoliang,
Raval Simit,
Chen Zanxu,
Hua Yifei
Publication year - 2020
Publication title -
land degradation and development
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.403
H-Index - 81
eISSN - 1099-145X
pISSN - 1085-3278
DOI - 10.1002/ldr.3751
Subject(s) - shrub , normalized difference vegetation index , herb , arid , vegetation (pathology) , environmental science , china , hydrology (agriculture) , geography , physical geography , ecology , geology , medicinal herbs , leaf area index , archaeology , medicine , geotechnical engineering , pathology , biology , traditional medicine
Underground mining (as opposed to open‐cast) often causes large‐scale subsidence, leading to various types of disturbances to surface vegetation. Adequate quantitative assessment of the long‐term effects of underground mining on the growth of different plant communities is important and still lacking. To address these issues, a vegetation growth contract model (VGCM) was proposed, and six indicators including the growth trend (GT), annual growth (AG), normalized spectrum entropy (Hsn), as well as the average value of annual‐average normalized difference vegetation index (NDVI; ANDVI ave ), annual‐maximum NDVI (ANDVI max ), and annual‐minimum NDVI (ANDVI min ) were selected. The long‐term effects of underground mining (EM) on the herb, shrub, and tree communities in the Nanjiao mining area, China, from 1987 to 2017 were evaluated. The results show that the plant communities, which maintained the same type in the areas influenced and not influenced by mining, accounting for 48.07% and 46% of the total area, respectively. As for these plant communities, underground mining had a significant negative effect on the AG, ANDVI ave , and ANDVI max of both the herb and tree communities, while it had a positive effect on the GT and H sn of the shrub community. Overall, underground mining had a negative effect on these three types of plant communities, and the EMs of the herb, tree, and shrub communities were −15.10, −6.79, and −4.03%, respectively. This research could provide a reference for evaluating the long‐term effects of mining activities on vegetation, and also give more insights into the effects of underground mining on different plant communities.