Research on the long-term relationship between green tide and chlorophyll-a concentration in the Yellow Sea based on Google Earth Engine
2022
Li, Dongxue | Gao, Zhiqiang | Wang, Yueqi
Green tide has broken out for 15 years in the Yellow Sea, affecting the marine ecological environment. This study extracted green tide information from 2007 to 2021, processed chlorophyll a (Chl-a) concentration data from 1997 to 2021 based on the Google Earth Engifne platform, and examined the relationship between them. Results showed that (1) the green tide had a inhibitory effect on the growth of phytoplankton, and the larger the scale of the green tide was, the stronger the inhibitory effect was and the slower the recovery of phytoplankton had after the green tide dissipated; (2) both the early distribution area of green tide and the Chl-a concentration in spring were correlated with the green tide scale. In addition, the feasibility of Chl-a to predict the scale of the green tide was preliminarily explored. With a view to improving the ability to predict green tide in the long term.
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