Eutrophication multi-spectral remote sensing monitoring and evaluation of section of the Weihe river in Xi'an

In order to monitor and evaluate the water quality of Weihe river in Xi'an using remote sense, we used the multi - spectral remotely sensed images and the water monitoring data to establish a linear inversion model of the concentration of chlorophyll-a based on the remote sensing image, and to evaluate the water quality preliminary trough the single index evaluation method. The result showed that: More than 94% section of Weihe river basin in Xi'an was in the moderate and severe eutrophication, in which more than 55% area was in severe eutrophication in August. The research has a breakthrough in the method of water quality monitoring. Multi-spectral remote sensing had been used to monitor the concentration of chlorophyll-a in the river, which made the monitoring and evaluation of eutrophication more convenient and faster. Therefore, corresponding measures will be taken to restrain a further deterioration in the region.