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稀土资源是现代科技所需的重要资源,由于其有很高的经济价值,稀土资源的开采活动越来越频繁,过度开采现象严重,对稀土矿区的实时监控成为保护环境资源的重要环节。遥感技术在监测土地利用变化方面已经有了完善的技术方法。相较于普遍使用的Landsat-TM/ETM+数据,我国研发的HJ卫星(中国环境与灾害监测预报小卫星)数据具有更短的重访周期,能够对稀土矿的开采进行更加有效的检测。通过结合Landsat-TM/ETM+与HJ-1/CCD数据,根据矿区植被覆盖度的变化及时监测稀土矿区活动情况,对江西定南地区20a来稀土矿区开采变化情况进行监测,并提出保护建议,为实现矿产资源的可持续发展提供理论依据。
Rare earth resources are the important resources needed by modern science and technology. Due to its high economic value, rare earth resources exploitation activities are more and more frequent and over-exploitation is serious. Real-time monitoring of rare earth mines becomes an important part of environmental protection. Remote sensing has a well-established technological approach to monitoring changes in land use. Compared with the commonly used Landsat-TM / ETM + data, the data of HJ satellite developed by China (China’s environment and disaster monitoring and forecasting small satellite) has a shorter revisit cycle and can detect the exploitation of rare earth ore more effectively. Based on the data of Landsat-TM / ETM + and HJ-1 / CCD combined with the change of vegetation coverage in the mining area, the mining activities in the rare earth mining area were monitored in time to monitor the change of mining conditions in the recent 20 years, and proposed protection suggestions Achieve the sustainable development of mineral resources to provide a theoretical basis.