水科学与水工程2009，Vol.2Issue(1)：16-24,9.DOI:10.3882/j.issn.1674-2370.2009.01.002
Eutrophication model for river-type reservoir tributaries and its applications
Eutrophication model for river-type reservoir tributaries and its applications
摘要
Abstract
With the impoundment of the Three Gorges Reservoir, algal blooms have been found in some tributaries. In this study, according to the theoretical analysis of the eutrophication mechanismin a river-type reservoir tributary, a one-dimensional eutrophication model was developed for the Xiangxi River tributary of the Three Gorges Reservoir, and the influence of hydrodynamic conditions on the primary growth rate of algae was investigated. Furthermore, numericalpredictions of hydraulic variables and eutrophication factors, such as the concentration distribution of TP, TN, and Chl-a in the spatial and temporal domains, were carded out. Comparison of computation results of TP, TN, and Chl-a concentrations along the river in the spring of 2005 with experimental data demonstrates the validity of the model. The agreement between the computation results and the experimental data of TP and TN concentrations is better than the agreement between those of Chl-a concentration. The simulated results also show that the Chl-a concentration downstream is much higher than that in the upstream tributary, which potentially indicates the outbreak of algae in this area. Therefore, this study provides a feasible method of accurately predicting the state of eutrophication in river-type reservoirs and their tributaries.关键词
eutrophication model/river-type reservoir/Xiangxi River tributary/algal bloomsKey words
eutrophication model/river-type reservoir/Xiangxi River tributary/algal blooms分类
建筑与水利引用本文复制引用
Ling-ling WANG,Zhen-zhen YU,Hui-chao DAI,Qing-hua CAI..Eutrophication model for river-type reservoir tributaries and its applications[J].水科学与水工程,2009,2(1):16-24,9.基金项目
This work was supported by the National Natural Science Foundation of China (Grant No. 50779028), and theNational Science and Technology Supporting Plan (Grant No. 2008BAB29B09). （Grant No. 50779028）
