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基于GEE平台分析1990—2020年广西主要地表水类型的时空变化特征,基于澄碧河、达开、青狮潭和洪潮江水库等实验区对常见的光谱水体指数(NDWI、MNDWI、AWEI、MBWI、WI2015和TCW)的实用性和稳定性进行分析,挑选适合于广西地区水体信息提取的最优指标,然后将其集成于GEE平台研究广西主要地表水类型的时空变化特征。研究表明AWEI水体指数阈值稳定,有很好的实用性,更适合于广西地区地表水信息提取和长时间序列的监测。1990—2020年各个大型水库地表水的面积变化都不尽相同,面积变化较大,研究成果可为广西水资源动态管理提供科学、客观的基础数据。
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