Change characteristics of DSi and nutrition structure at the Yangtze River Estuary after Three Gorges Project impounding and their ecological effect

• Autorzy: Li L. , Shen X. , Jiang M.

Identyfikatory

DOI

10.1515/aep-2017-0012

• Języki publikacji: EN

Abstrakty

EN

The variation law of dissolved silica (DSi), dissolved inorganic nitrogen (DIN), dissolved inorganic phosphorus (DIP) and nutrition structure after the Three Gorges Project (TGP) impounding as well as their ecological effect were analyzed according to monitoring survey of the Yangtze River Estuary in spring (May) and summer (August) from 2004–2009. The results showed that after impounding, DSi and DIN concentration decreased and increased, respectively. During the study period, DSi decreased by about 63%, while DIN almost tripled. DIP concentration fluctuated slightly. With respect to nutrition structure, N:P increased, whereas Si:P and Si:N declined. According to chemometry standard of nutrient limits, nutrition structure tended to be imbalanced and the limiting factor of phytoplankton growth (P) was studied. Changes of nutrition structure have largely decreased diatom and caused different composition of dominant phytoplankton species. This may change ecosystem structure of the Yangtze River Estuary.

Słowa kluczowe

EN

Three Gorges Project; Yangtze River Estuary; DSi; dissolved silica; nutrition structure

• Wydawca: Institute of Environmental Engineering, Polish Academy of Sciences
• Czasopismo: Archives of Environmental Protection
• Rocznik: 2017
• Tom: Vol. 43, no. 2
• Strony: 74--79
• Opis fizyczny: Bibliogr. 30 poz., tab., wykr.

Twórcy

autor

Li L.

• East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, China

autor

Shen X.

• East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, China

autor

Jiang M.

• East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, China

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).