The Science of The Total Environment, Год журнала: 2024, Номер 918, С. 170690 - 170690

Опубликована: Фев. 5, 2024

Worldwide, anthropogenic activities threaten surface water quality by aggravating eutrophication and increasing total nitrogen to phosphorus (TN:TP) ratios. In hydrologically connected systems, management may benefit from in-ecosystem nutrient retention preventing transport downstream systems. However, also alter TN:TP ratios with unforeseen consequences for quality. Here, we aim increase understanding of how influence systems improve long-term management. We analyzed lake ecosystem state, in-lake retention, (ratios) 3482 Chinese lakes using the process-based model PCLake+. compared a low climate change sustainability-, high economy-focused scenario 2050 against 2012. both scenarios, effect input reduction outweighs that temperature rise, resulting in more good ecological (i.e., macrophyte-dominated) than Generally, sustainability-focused shows promising future scenario. Nevertheless, most remain phytoplankton-dominated. The shift macrophyte-dominated is accompanied higher fractions less waterbodies. In-lake alters water's ratio, depending on inflow ratio state. are expected outflows 2012, especially strong TP loading reduction. impact increased depends actual loadings limiting receiving system. conclude reductions, improved quality, fractions, lower waterbodies go hand hand. Therefore, could even pollution one would expect at first sight.

Язык: Английский