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首页> 外文期刊>International Journal of Environmental Research and Public Health >Impact of the Dam Construction on the Downstream Thermal Conditions of the Yangtze River
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Impact of the Dam Construction on the Downstream Thermal Conditions of the Yangtze River

机译：大坝施工对长江下游热情的影响

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Water temperature is an important factor in aquatic environments. Dam construction, especially the construction of multiple dams in rivers, can greatly affect the downstream water temperature. Several dams, including Wudongde, Baihetan, Xiluodu, Xiangjiaba, Three Gorges, and Gezhouba, have been constructed between Panzhihua and Yichang along the Yangtze River. The aim of this paper was to quantify the impact of these dams on the water temperature downstream. One-dimensional and two-dimensional models were used to simulate the water temperatures, and the results showed that the dams had different cumulative effects on it. For example, in January, after the construction of the Xiangjiaba and Xiluodu dams, the discharge water temperature of Xiangjiaba was 3 °C higher than the natural conditions, and after the construction of the Baihetan and Wudongde dams was completed, it increased by a further 2 °C. The natural river ran over 416 km with no dams from the Xiangjiaba dam to the Cuntan Station. With the influence of climate and tributary inflow, the impact of upstream dams on the water temperature was mitigated by more than 48% at Cuntan Station, displaying a recovery. It seemed that the cumulative effects of dams on the discharge water temperature of the Three Gorges decreased with the increase in the upstream storage capacity from March to May, and the construction of dams even had a negative effect. From September to February of the next year, the cumulative effects increased with the increase of the upstream storage capacity, but only the total storage capacity until a certain level, where no further impact was observed.
机译：水温是水生环境中的一个重要因素。大坝施工，尤其是河流中多坝的建设，可以大大影响下游水温。几个大坝，包括沃隆德，白盛，Xiluodu，湘雅，三峡和葛洲坝，攀枝花和宜昌沿着长江之间建造。本文的目的是量化这些水坝对下游水温的影响。一维和二维模型用于模拟水温，结果表明，该坝对其具有不同的累积效应。例如，在1月份，在湘家坝和Xiluodu坝的建设之后，湘家坝的排放水温高于自然条件，而在百晨和沃隆德大坝建设后，它又增加了进一步2°C。天然河流跑416公里，湘家坝的大坝没有水坝到Cuntan站。凭借气候和支流流入的影响，在CULTAN站在CUNTAN站，上游水坝对水温的影响减轻了48％，呈现出恢复。似乎大坝对三峡排放水温的累积效应随着3月至5月的上游储存能力的增加而下降，坝体的构造甚至具有负面影响。从9月到明年的2月，累计效应随着上游储存能力的增加而增加，但只有总存储容量，直到一定程度，没有观察到进一步影响。

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