Abstract:The use of herbicides in China has increased faster than that of insecticides and fungicides since late 1980‘s. Herbicide application has covered almost all habitats, including crop fields, orchards, forests, parks and natural water body. Such a large-scale application might have transferred herbicide residues into aquatic ecosystems, resulting in disfunction of hydrophytes as primary producers in energy flow. This study was conducted to investigate the effect of 12 herbicides (i.e. acetochlor, butachlor, m...