水利水电科技进展Issue(6)：66-70,79,6.DOI:10.3880/j.issn.1006-7647.2013.06.014
三峡库区大宁河库湾水体混合过程中的营养盐行为
Behaviors of nutritive salt during water body mixing process in Daning Bay of Three Gorges Reservoir
摘要
Abstract
To investigate the behaviors of nutrients in the Daning Bay of the Three Gorges Reservoir under different modes of water body mixing in different seasons, the spatial-temporal distribution of nutrients was analyzed based on field data collected from the Daning Bay in 2012. The seasonal variations of nutrients were calculated using the box model, which was expected to provide a theoretical basis for the formulation of a strategy for controlling the eutrophication and algal bloom in the Daning Bay. Experimental and calculated results show that during the discharge period, the mainstream water flowed into the Daning Bay upwardly through the upstream surface current, while the tributary water flowed to the estuary through the bottom density current. During the flood and storage periods, the mainstream water flowed into the Daning Bay upwardly through the upstream surface and middle-layer currents, while the tributary water flowed to the estuary through the bottom density current. The function of the mainstream water body against the flow from tributary perennially exists. The contribution rates of the mainstream to the tributary during the discharge period, flood period, and storage period were 70.38%, 28.42%, and 59.56%, respectively. During the water mixing process, the interaction of the water from the Daning Bay upstream and the water from the mainstream was the main physical mechanisms to control the chemical composition of the Daning Bay.关键词
三峡水库/水体混合过程/营养盐/大宁河库湾Key words
Three Gorges Reservoir/water mixing process/nutritive salt/Daning Bay分类
天文与地球科学引用本文复制引用
张佳磊,郑丙辉,刘录三,王丽婧,吴光应..三峡库区大宁河库湾水体混合过程中的营养盐行为[J].水利水电科技进展,2013,(6):66-70,79,6.基金项目
国家自然科学基金青年科学基金(51209190) （51209190）
“十二五”国家水体污染控制与治理重大科技专项(2012ZX07503-002) （2012ZX07503-002）
