基于遥感反演的城市河道水环境变化趋势分析

Analysis of Change Trend of Urban River Water Environment based on Remote Sensing Inversion

城市河涌与人民的生产、生活密切相关。文章以哨兵2号多光谱遥感影像为载体,以广州市区河道珠江后航道长时间序列的化学需氧量、叶绿素a、总悬浮颗粒物浓度为研究对象,反演分析后航道水环境时相变化和空间分布情况,研究广州中心城区城市河道水环境变化趋势,进而分析后航道水环境治理存在的问题,并提出水环境保护对策和建议,为城市河道治理与生态修复提供依据,助力广州建设美丽中国先行区。

Urban river surges are closely related to people's production and life.In this study,the sentinel II multi-spectral remote sensing image was used as the carrier,the long-term chemical oxygen demand,chlorophyll A and total suspended particulate concentrations in the channel behind the Pearl River in Guangzhou were studied as the objects,after the inversion analysis,the time-phase change and spatial distribution of waterway water environment were studied to study the change trend of urban waterway water environment in the central city of Guangzhou,and then the existing problems of waterway water environment management were analyzed.Meanwhile,the countermeasures and suggestions about water environmental protection were put forward,which providing a basis for urban river management and ecological restoration,and helping Guangzhou to build a beautiful China pilot zone.