Different storm responses of organic carbon transported to Lake Taihu by the eutrophic Tiaoxi River, China

Low-frequency high-magnitude storms can flush disproportionate amounts of terrigenous dissolved organic carbon (DOC) and particulate (POC) into rivers during a short period. However, previous studies focused on the impacts transport in headwater streams that are minimally influenced by human activities far from lakes. To better estimate lake budget manage water environments, we need to understand storm-induced lakes eutrophic rivers. Based daily hourly time-series monitoring data, this paper systematically studied influences storm precipitation DOC POC Tiaoxi River entering Lake Taihu, 3rd largest freshwater China. The results showed seven transported 59% annual total Taihu 2019, all resulted peaks. During period August 9–16, was negatively related level (r = −0.44, p < 0.05), but responded positively 0.52, 0.05); allochthonous contents were elevated, autochthonous components diluted. Moreover, input riverine environment across large region, lasted more than 10 days. These findings have important implications for accurately estimating fluxes making better-informed decisions about when pump drinking