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| 江西赣州废弃离子型稀土矿修复区植被高光谱特征与健康状况评价 |
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魏吉鑫1,2, 刘斯文1,3, 李海潘4,5, 陈文华4,5
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1.国家地质实验测试中心, 北京 100037;2.中国地质大学(北京), 北京 100083;3.自然资源部生态地球化学重点实验室, 北京 100037;4.赣南地质调查大队, 江西 赣州 341000;5.江西赣南地质工程院, 江西 赣州 341000
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| 摘要: |
| 江西赣州废弃离子型稀土矿山自2016年以来修复成效明显，目前已基本修复完毕，如何科学评价废弃稀土矿山的修复效果，已成为政府亟需解决的问题。传统的多光谱遥感方法对于精确提取修复区植被的种类和健康状况存在较多的局限。为解决上述问题，中国地质调查局支撑赣州七县矿山地质环境调查工作部署了赣州稀土矿矿山地质环境综合调查和评价工作。以无人机搭载高光谱仪为主要遥感调查工具，选择典型的废弃稀土矿山修复区为研究区，进行矿区无人机搭载高光谱仪扫描，获取了龙南县足洞地区2 km2的典型矿区高光谱影像。利用ENVI软件，采用混合线性模型进行矿区原始及修复植被的光谱特征提取，分区分析了废弃稀土矿山地区植被生长情况，对修复区植被的健康状况进行尝试性的评价。该方法将地球化学调查和高光谱遥感相结合为废弃稀土矿山植被生态修复效果的评价提供了一种快速、准确的评价方法。 |
| 关键词: 赣州脱贫攻坚 废弃稀土矿山修复 无人机搭载高光谱 光谱曲线 |
| DOI： |
| 分类号:P618.7 |
| 基金项目:中国地质调查局项目《全国矿山地质环境综合调查与评价（国家地质实验测试中心）》（编号：DD20190703）和国家重点研发计划项目《离子型稀土矿浸矿场地土壤污染控制及生态功能恢复技术》（编号：2019YFC1805103） |
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| Hyperspectral characteristics and health status evaluation of vegetation in the restoration area of the abandoned ion type rare earth mine in Ganzhou,Jiangxi Province |
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WEI Jixin1,2, LIU Siwen1,3, LI Haipan4,5, CHEN Wenhua4,5
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1.National Research Center for Geoanalysis, Beijing 100037, China;2.China University of Geosciences(Beijing), Beijing 100083, China;3.Key Laboratory of Ministry of Natural Resources for Eco-geochemistry, Beijing 100037, China;4.Gannan Geological Survey Group, Ganzhou 341000, Jiangxi, China;5.Geo-engineering Investigation Institute of South Jiangxi Province, Ganzhou 341000, Jiangxi, China
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| Abstract: |
| Since the end of 2016,it has become the basic problem for the government to extract the rare earth ions in abandoned mine areas.In order to solve the above problems,China Geological Survey supported the mine geological environment survey of seven counties in Ganzhou,and deployed the comprehensive investigation and evaluation of the geological environment of the rare earth mines in Ganzhou.In this paper,UAV carrying hyperspectral spectrometer was used as the main remote sensing survey tool,the typical abandoned rare earth mine restoration area was selected as the research area,and the hyperspectral images of 2 km2 of typical mining area in zudong area of Longnan county were obtained.With ENVI software,mixed linear model was used to extract spectral characteristics of original and restored vegetation in the mining area.Vegetation growth in abandoned rare earth mine area was analyzed by zoning,and the health status of vegetation in the restoration area was tentatively evaluated.This method combines geochemical survey with hyperspectral remote sensing,and provides a rapid and accurate evaluation means for the evaluation of vegetation ecological restoration effect of abandoned rare earth mines. |
| Key words: Ganzhou poverty alleviation restoration of abandoned rare earth mines UAV carrying hyperspectral spectral curve |