水科学进展2016，Vol.27Issue(4)：551-560,10.DOI:10.14042/j.cnki.32.1309.2016.04.009
三峡工程对宜昌-监利河段水温情势的影响分析
Influence of Three Gorges Reservoir on water temperature between Yichang and Jianli
摘要
Abstract
The Three Gorges Reservoir has changed the water temperature trend on downstream waters of the Yangtze River and has an important impact on downstream ecological environment. Based on the measured data of the Yichang hydrological station on Yangtze River during a period of 14 years ( 2000—2013 ) , the one⁃dimensional longitudinal temperature model was used to analyze the temporal and spatial variation of water temperatures of the expanse of 300 km along the river, from Yichang to Jianli, which occurred as a result of the Three Gorges Reservoir Reservoir. The impact on spawning grounds due to water temperature variation was also discussed in different impoundments. The re⁃search results show the following:①As a result of the Three Georges Reservoir, there was a phenomena of planariza⁃tion and delay of the water temperature process in Yichang. It is also evident that the discharged water is of a lower temperature during the summer and higher temperature in winter on downstream. Compared with the natural water tem⁃perature, the water temperature in Yichang changed to -4. 3℃ in April and 3. 7℃ in December during the period of the 175 m stage. ②As a result of the operation of this project, the water⁃air heat exchange on downstream river waters has also experienced much change, and the relatively strong flow has caused the water temperature of the nature status along the river to recover slowly. The dam also plays a decisive role in regulating the downstream water temperature. The water temperature of Jianli changed -3. 2℃ and 3. 0℃ in April and December respectively. ③After the Three Gorges Reservoir was put into operation, the original water temperature in the Chinese sturgeon spawning grounds of Yichang which reached 20. 0℃ in winter began to experience a delay of 10—40 days. The water temperature of 18. 0℃in the Four Major Chinese Carps grounds of Jianli in spring time also experienced a delay of 10—30 days. In ac⁃cordance with the rising level of Three Gorges Reservoir, the trend of the delay will be more significant.关键词
水温/三峡工程/宜昌-监利河段/一维模型/平坦化/延迟Key words
water temperature/Three Gorges Reservoir/Yichang-Jianli River stage/one-dimensional model/pla-narization/delay分类
建筑与水利引用本文复制引用
邓云,肖尧,脱友才,何天福..三峡工程对宜昌-监利河段水温情势的影响分析[J].水科学进展,2016,27(4):551-560,10.基金项目
国家自然科学基金资助项目（51179112；51309169） The study is financially supported by the National Natural Science Foundation of China （ No．51179112；No．51309169）． （）
