离子吸附型稀土矿山开采不仅会占用及破坏土地资源,还会造成土地荒漠化等严重的地质环境问题,如何快速、准确、实时地进行稀土矿山监测,成为一个重要的科学问题.本文选取江西定南稀土矿区为研究区,以2015年高分一号数据为主要信息源,建立稀土矿山主要地物解译标志,开展稀土矿山占地现状调查;并结合2011年的Geoeye遥感数据,运用光谱角填图方法提取两期数据的土地荒漠化区域,开展稀土矿山土地荒漠化动态监测示范研究.研究结果表明遥感能够为稀土矿山监测提供良好的技术手段,且国产高分一号数据能够替代国外卫星数据在矿山监测中发挥重要作用.
Ion-absorbed rare earth mining not only occupies and destroys of land resources,also can cause serious geological environment problem such as desertification.The quick,accurate and real-time monitoring of rare earth ore deposits is an important research problem.In this paper,rare earth ore district in Dingnan of Jiangxi was selected as the study area,and GF-1 remote sensing data was selected as the main information source to develop the present situation investigation of rare earth mine exploitation and impropriate soil by establishing main interpretation signatures of rare earth.And combining Geoeye remote sensing data,the spectral angle mapping was chosed to extract the land desertification place in 2011 and 2015 and study the dynamic monitoring of land desertification.An analysis of the results showed that remote sensing can provide a good method for dynamic investigation of rare earth minerals,and GF-1 remote sensing data could replace foreign satellite data to play an important role in mine monitoring.
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