Chlorophyll retrieval of typical lakes in southeast Hubei province based on landsat-8

Body chlorophyll a is an important index to reflect the quality of water quality, and it is also the primary consideration for water quality monitoring based on satellite remote sensing images. Taking five typical lakes in southeastern Hubei as an example, this paper studied the chlorophyll inversion model applicable to five lakes in southeastern Hubei on November 11, 2021 under the combination mode of various bands of Landsat-8 images. Based on the measured chlorophyll a data on the ground, the accuracy of different chlorophyll inversion methods was evaluated, and the chlorophyll content and spatial distribution were obtained by the final inversion. The experimental results show that the accuracy of the multiband combination is high, and the correlation between the B5/B4 band combination and the chlorophyll a content is the highest. The fitting coefficient of the model is higher than 60%, and the inversion accuracy is good. The distribution of chlorophyll was different in different degrees. The chlorophyll concentration in most lakes was higher on the shore and lower in the center of the lake.