干旱区研究2024，Vol.41Issue(11)：1921-1935,15.DOI:10.13866/j.azr.2024.11.12
气候和采矿活动对荒漠化草原露天矿区植被的影响
Effects of climate and mining activities on vegetation in open-pit mining in desertification grassland
摘要
Abstract
In this study,we aimed to examine the vegetation damage and reclamation status of mining pits and waste dumps in open-pit mines and provide an ecological basis for diagnosing vegetation damage in mining areas and assessing natural and artificial vegetation restoration.Using Sentinel-2 data,we calculated non-red edge veg-etation indices(Normalized Difference Vegetation Index(NDVI)and Enhanced Vegetation Index)and red edge vegetation indices(Red Edge Normalized Difference Vegetation Index(RENDVI),Modified Red Edge Simple Ratio,Chlorophyll Index red edge,and Transformed Chlorophyll Absorption in Reflectance Index)as indicators for evaluating ecological restoration.We employed regression analysis,trend analysis,and correlation analysis to assess the impacts of mining activities and climate change on the ecological environment of five open-pit mines(Wulanhada,Jingwei,Wujiata,Langwoqu,and Hongshengyuan)from 2018 to 2021.This approach enabled us to identify the spatial and temporal patterns of change in vegetation across mining pits,waste dumps,and buffer zones.The results revealed the following:(1)The Hongshengyuan open-pit mine had the most severe vegetation damage(k=-0.2996)but had the most effective manual restoration on its waste dump(k=0.1364).(2)A compari-son of the 5 km buffer zones around the five open-pit mines indicated that the pixel-by-pixel RENDVI trends pre-dominantly showed degradation,with over 50%of the areas exhibiting signs of decline.(3)In the desertified grassland area,temperature had a more significant impact on vegetation NDVI than temperature.Open-pit mining exacerbates the ecological degradation of desertified grassland vegetation,while artificial restoration of waste dumps is highly effective in improving the ecological conditions of regional vegetation.关键词
荒漠化草原/神东矿区/露天开采/排土场/植被指数/生态修复Key words
desertification grassland/Shendong mining area/open-pit mining/waste dump/vegetation index/ecological restoration引用本文复制引用
王市委,张浩斌,郭文兵,马超..气候和采矿活动对荒漠化草原露天矿区植被的影响[J].干旱区研究,2024,41(11):1921-1935,15.基金项目
国家基金委区域创新发展联合基金重点项目(U21A20108) （U21A20108）
河南省高校科技创新团队支持计划(22IRTSTHN008) （22IRTSTHN008）
