Study areas and sampling sites
Poyang Lake (28°4′-29°46′N, 115°49′-116°46′E), the largest freshwater
lake in China, situated in the south bank of the middle reaches of the
Yangtze River (Wu et al., 2021). The lake receives inflows from five
tributary rivers in the basin, drains into the Yangtze River at Hukou
after regulation and storage (Song et al., 2021).
In this study, we collected samples
from 5 sites (Hukou County, Xingzi County, Duchang County, Wucheng Town,
Poyang County) in the Poyang Lake (Fig. 1).