期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：304
期号：2
页码：1-7
DOI：10.1088/1755-1315/304/2/022014
出版社：IOP Publishing
摘要：River-communicating lakes in the middle and lower reaches of the Yangtze River connect with river through culverts and sluices except Poyang Lake and Dongting Lake. Its water quality is poorer due to the lack of natural exchange of water, especially in dry season. Taking Huayang Lake group as an example, the feasibility of ecological operation and the specific plan during non-flood period were studied by data analysis, field investigation and numerical simulation. Data analysis result presents the concentration of TN and TP decreases with the increase of water level, but the tendency slows down when the water level exceeds a certain value. In addition, based on the current sluice gate dispatching mode, relationship between river and lakes, flood control security, improvement of water environment and the simulated results, the ecological operation plan was obtained, that is, using Yangwan and Huayang sluices to control the water level in the lake from October to December at 13 m, January to February at 12.5 m and March to April at 11.8 m.
