The invention discloses a
chlorophyll calculating method based on remote-sensing images and a water ecological model. The method comprises the steps of 1, based on remote-sensing image data, data preprocessing like
radiometric calibration,
atmospheric correction and image
cropping and fusing is conducted; 2, a remote-sensing
water quality inversion model is constructed, and respective inversion ofindexes like
water temperature and
chlorophyll concentration is achieved; 3, various index concentrations and future weather change which are obtained through inversion of the remote-sensing images are regarded as input conditions of the water ecological model, and the
chlorophyll concentration dynamic change process of a
water area environment is simulated within a future duration caused by change like nutritive substance conversion and
algae growth and death under a future weather change condition. The chlorophyll calculating method is applicable to
water environment monitoring and predicting, and has popularity and high calculation precision,
chlorophyll concentration prediction and
simulation of a large area of a
drainage basin are achieved in real time under the condition of the limited
monitoring site, and an integrated
chlorophyll concentration predicting
system integrating the remote-sensing images and the water ecological model can be formed.