Spatial and temporal distribution of dissolved oxygen in the main stream of the National Nature Reserve for Rare and Endemic Fish in the Upper Reaches of the Yangtze River after reservoir impounding
1. State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China 2. Research Center for Sustainable Hydropower Development, China Institute of Water Resources and Hydropower Research, Beijing 100038, China 3. Upper Changjiang River Bureau of Hydrological andWater Resources Survey, Chongqing 400014, China
Dissolved oxygen (DO) is one of the important indicators of water body health. The spatial and temporal DO distribution in the main stream of the National Nature Reserve for Rare and Endemic Fish in the upper reaches of the Yangtze River after impounding of the Xiangjiaba and Xiluodu Reservoirs was analyzed using the water temperatures and DO mass concentrations at 7 monitoring sites from July, 2012 to November, 2013. During the monitoring period, the Xiangjiaba Reservoir was impounded 3 times while the Xiluodu Reservoir was impounded once. The results show that: 1) the DO is supersaturated after each impounding, 2) both the DO concentration and the saturation increase significantly after impounding, 3) the confluence of tributaries strongly impacts the DO levels in the main stream, and 4) the increased DO saturation in the river is related to the annual periodic variation of the water temperature and the water-air mixing phenomenon caused by the reservoir discharge mode.
沈忱,吕平毓,王义成,倪广恒,冯顺新. 水库蓄水后长江上游珍稀特有鱼类国家级自然保护区干流溶解氧时空分布[J]. 清华大学学报（自然科学版）, 2015, 55(1): 39-45.
Chen SHEN,Pingyu LV,Yicheng WANG,Guangheng NI,Shunxin FENG. Spatial and temporal distribution of dissolved oxygen in the main stream of the National Nature Reserve for Rare and Endemic Fish in the Upper Reaches of the Yangtze River after reservoir impounding. Journal of Tsinghua University(Science and Technology), 2015, 55(1): 39-45.
陈永灿,付健,刘昭伟,等. 三峡大坝下游溶解氧变化特性及影响因素分析[J]. 水科学进展, 2009, 20(04): 526-530. CHEN Yongcan, FU Jian, LIU Zhaowei, et al.Analysis of the variety and impact factors of dissolved oxygen downstream of Three Gorges Dam after the impoundment[J]. Advance in Water Science, 2009, 20(04): 526-530.(in Chinese)
[2]
蒋亮,李然,李嘉,等. 高坝下游水体中溶解气体过饱和问题研究[J]. 四川大学学报: 工程科学版, 2008, 40(05): 69-73. JIANG Liang, LI Ran, LI Jia, et al.The supersaturation of dissolved gas in downstream of high dam[J]. Journal of Sichuan University: Engineering Science Edition, 2008, 40(05): 69-73.(in Chinese)
[3]
谭德彩,倪朝辉,郑永华,等. 高坝导致的河流气体过饱和及其对鱼类的影响[J]. 淡水渔业, 2006, 36(03): 56-59. TAN Decai, NI Zhaohui, ZHENG Yonghua, et al.Dissolved gas supersaturation downstream of dam and its effects on fish[J]. Freshwater Fisheries, 2006, 36(03): 56-59.(in Chinese)
[4]
Cornacchia J W, Colt J E. The effects of dissolved gas supersaturation on larval striped bass, Morone saxatilis (Walbaum)[J]. Journal of Fish Diseases, 1984, 7(01): 15-27.
[5]
冯镜洁,李然,李克锋,等. 高坝下游过饱和TDG释放过程研究[J]. 水力发电学报, 2010, 29(1): 7-12. FENG Jingjie, LI Ran, LI Kefeng, et al.Study on release process of supersaturated total dissolved gas downstream of high dam[J]. Journal of Hydroelectric Engineering, 2010, 29(01): 7-12.(in Chinese)
[6]
陈永柏,彭期冬,廖文根. 三峡工程运行后长江中游溶解气体过饱和演变研究[J]. 水生态学杂志, 2009, 2(05): 1-5. CHEN Yongbo, PENG Qidong, LIAO Wengen. The evolvement study on supersaturation of dissolved gas in the middle reaches of Yangtze River after the Three Gorges project running[J]. Journal of Hydroecology, 2009, 2(05): 1-5.(in Chinese)
[7]
HE Jianxun, Chu A, Ryan M C, et al.Abiotic influences on dissolved oxygen in a riverine environment[J]. Ecological Engineering, 2011, 37(11): 1804-1814.
[8]
李振刚. 多功能、多参数水质监测仪研究及应用 [D]. 青岛: 青岛大学, 2007. LI Zhengang. Application of Multi-Functional and Multi-Parameter Water Quality Monitor [D]. Qingdao: Qingdao University, 2007. (in Chinese)
[9]
王仁坤. 金沙江溪洛渡水电站枢纽建筑物设计综述[J]. 中国三峡建设, 2005(06): 47-50. WANG Renkun. A review on the design of Xiluodu hydropower station buildings[J]. China Three Gorges Construction, 2005(06): 47-50.(in Chinese)
[10]
张永涛. 向家坝水电站泄洪建筑物设计[J]. 中国三峡建设, 2008(05): 28-31. ZHANG Yongtao. The design of flood discharge building of Xiangjiaba hydropower station[J]. China Three Gorges Construction, 2008(05): 28-31.(in Chinese)
2015, Vol. 55 
),冯顺新2
