基于湖北省12个中小型湖泊的水环境遥感监测应用示范

以《湖北省水环境遥感监测示范系统》为数据处理平台,对2012—2014年湖北省大东湖水网、梁子湖水系和汤逊湖水系共计12个湖泊的水质类别以及营养状态级别进行遥感监测,并对比实测数据进行精度评价。结果表明:遥感监测的梁子湖、豹澥湖和严西湖水质相对较好,杨春湖、北湖和南湖水质相对较差且富营养化状况较为严重。该系统能很好地实现对水质优良达标湖泊以及富营养化湖泊的识别。对示范区域各湖泊水质类别和营养状态级别的遥感监测,基本上能满足业务化运行的需求。个别湖泊遥感监测精度较低,主要表现为遥感监测的湖泊水质类别和营养状态级别均要优于实测的结果。系统对于面积相对较大的湖泊遥感监测精度更高。

Application Demonstration of Water Environment Remote Sensing Monitoring for Small to Medium-sized Lakes in Hubei Province

Based on the platform of water environment remote sensing monitoring demonstration system in Hubei Province, the water quality level and eutrophication level of Big East Lake water system, Liangzi Lake water system, and Shang Xunhu water system were monitored in 2012-2014, with the technique of space-ground monitor system, and the results monitored by remote sensing were evaluated with the measured results. Results showed that:Water quality of Liangzi Lake, Baoxie Lake, and Yanxi Lake was relatively well, and it had a poor water quality and a bad nutritional status for Yangchun Lake, North Lake and South Lake. There was little annual variation and seasonal variation of water quality and nutritional status level in each lake. The system has high recognition accuracy for lakes with good water quality, or with eutrophication phenomenon. And it can basically meet the demand of operational monitoring for the results of water quality category and nutritional status level monitored by remote sensing. Individual lake had a low monitoring accuracy, which was mainly because of the water quality category and nutrition status levels monitored by remote sensing was superior to that obtained through measuring. It has a higher accuracy of remote sensing monitoring for lakes with larger area.