Operational regulation of water replenishment to reduce supersaturated total dissolved gas in riverine wetlands
Operational regulation of water replenishment to reduce supersaturated total dissolved gas in riverine wetlands
复制标题
减少河流湿地过饱和溶解气体总量的补水运行调控
DOI：
10.1016/j.ecoleng.2016.03.019
复制
发表时间：
2016-11
影响因子：
3.8
通讯作者：
Li, Kefeng
中科院分区：
文献类型：
--
作者：
Liang, Ruifeng;Li, Ran;Feng, Jingjie;Li, Kefeng
随着在河流上游建造越来越多的高坝，自然洪水状况已经改变。水库的自愿和非自愿泄洪已成为河流湿地的主要补给水源。高坝泄洪过程中总溶解气体（TDG）的过饱和会严重影响河流湿地鱼类和水生生物的生存。泄洪调控是改善过饱和TDG在河流湿地中分布，从而减少对水生生物负面影响的有效方法。本文建立了一维非恒定TDG模型，预测了高坝下游过饱和TDG在不同泄流方式下的输移和耗散。在鱼类耐受性研究的基础上，评价了不同排放方式下TDG过饱和对鱼类的影响。结果表明，排放方式和水流特性是影响TDG输移的主要因素。在河流中的TDG水平，这是一个主要的因素，确定的TDG对鱼类的负面影响的持续时间，随着排放时间的增加而增加。模拟结果表明，不连续放电模式，而不是建议，以减轻TDG过饱和。
Natural flood regimes have been altered with an increasing number of high dams constructed in the upstream stretches of rivers. The voluntary and involuntary flood discharges of reservoirs have become the primary water replenishment source for riverine wetlands. Supersaturation of total dissolved gas (TDG) in the flood discharge from high dams may seriously affect the survival of fish and aquatic organisms in riverine wetlands. Flood discharge regulation is an effective method for improving the distribution of supersaturated TDG in riverine wetlands, thereby minimizing the negative effects on aquatic organisms. A one-dimensional unsteady TDG model is developed in this paper to predict the transportation and dissipation of supersaturated TDG downstream of a high dam under different discharge patterns. The effects of TDG supersaturation on fish under different discharge patterns were evaluated based on tolerance research results for native fish. The results indicate that the transportation of TDG is affected primarily by the discharge pattern and flow characteristics. The temporal duration of TDG levels in the river, which is a major factor determining the negative effects of TDG on fish, increase with increasing discharge time. The simulation results indicate that a discontinuous discharge pattern, rather than continuous discharge pattern, is recommended to mitigate TDG supersaturation.
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影响因子：
1.1
作者：
E. Arntzen;D. Geist;Katherine J. Murray;J. Vavřinec;Earl M. Dawley;Dennis E. Schwartz
通讯作者：
E. Arntzen;D. Geist;Katherine J. Murray;J. Vavřinec;Earl M. Dawley;Dennis E. Schwartz
DOI：
--
发表时间：
2001
期刊：
--
影响因子：
--
作者：
D. Venditti;T. C. Robinson;J. Beeman;A. Maule
通讯作者：
D. Venditti;T. C. Robinson;J. Beeman;A. Maule
影响因子：
4.4
作者：
Feng Jing-jie;Li Ran;Wang Le-le
通讯作者：
Wang Le-le
影响因子：
2.8
作者：
Politano, M.;Amado, A. Arenas;Hay, D.
通讯作者：
Hay, D.
DOI：
10.1061/40440(1999)48
发表时间：
1999-07
期刊：
--
影响因子：
--
作者：
M. Richmond;W. Perkins;Timothy Scheibe
通讯作者：
M. Richmond;W. Perkins;Timothy Scheibe