Monitoring the surface water quality of Taihu Lake based on the data of CBERS-1
基于中巴地球资源1号卫星的太湖表层水体水质遥感

Models for the estimation of concentration of chlorophyll-a and total nitrogen concentrations in surface water of Taihu Lake have been proposed based on the regression analysis between the CBERS-1 CCD data and semi-synchronous ground referenced data, with the consideration of the spectral characteristics of water components. Models were used to calculate of chlorophyll-a and total nitrogen concentrations in surface water of Taihu Lake on Sep.16, 2000. The results from the models agred well with those of ground monitoring ones and the overall distributions of chlorophyll-a and total nitrogen, which indicating that CBERS-1 CCD data had realistic significance and promise of application in monitoring key parameters of water quality. However, due to the limited ground stations, the models could not be extended to the eastern Taihu Lake, which was a typical ad littoral herby lake. It was implied that the synchronization and the covering range of the ground monitoring were crucial to the accuracy and applicability of the remote sensing information and models.