Estimation on dynamic release of phosphorus from wind-induced suspended particulate matter in Lake Taihu |
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| Authors: | Email author" target="_blank">Chengxin?FanEmail author Lu?Zhang Boqiang?Qin Sumin?Wang Weiping?Hu Chen?Zhang |
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| Institution: | 1. Taihu Lake Laboratory for Ecosystem Research,Nanjing Institute of Geography & Limnology,Chinese Academy of Sciences,Nanjing 210008,China
2. Taihu Lake Laboratory for Ecosystem Research,Nanjing Institute of Geography & Limnology,Chinese Academy of Sciences,Nanjing 210008,China;Graduate School of Chinese Academy of Sciences,Beijing 100039,China |
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| Abstract: | Through man-made disturbance experiments, the corresponding relationships between suspended particulate matter (SPM) and wind
speed in different lake areas were simu lated, the physicochemical formal transformation and biological mineralizing and decaying
processes of phosphorus in SPM were studied, the contribution of phosphorus transformation to phosphorus loading of the water
of Lake Taihu was quantitatively estimated. The results show that about 0.44 ta-1 loading in Lake Taihu mainly comes from phosphorus-releasing action of SPM in physicochemical transformed to soluble reactive
phosphorus (SRP), and the contribution mainly from biological mineralizing and decaying was about 425.8ta-1, which is equal to 15.0% of the total external loading of Lake Taihu, namely 4.7–7.5 times as much as SRP loading entering
the lake by the rivers; thus it is the important source in dynamical internal loading of the lake. The determining factors
for dynamical internal loading in lakes are organic phosphorus content in suspended solid and its biological transition availability. |
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| Keywords: | phosphorus release wind wave disturbance particulate decaying dynamical loading Lake Taihu |
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