三峡水库干流与香溪河库湾水体营养状态及其对水文条件的响应  

Trophic Status of the Mainstream of Three Gorges Reservoir and Xiangxi Bay and Its Response to Hydrological Conditions

作　　者：谭路[1] 申恒伦 王岚[1] 蔡庆华[1] TAN Lu;SHEN Heng-lun;WANG Lan;CAI Qing-hua(State Key Laboratory of Freshwater Ecology and Biotechnology,Institute of Hydrobiology,Chinese Academy of Sciences,Wuhan 430072,China;College of Life Sciences,Zaozhuang University,Zaozhuang 277160,China)

机构地区：[1]中国科学院水生生物研究所淡水生态与生物技术国家重点实验室,湖北武汉430072 [2]枣庄学院生命科学学院,山东枣庄277160

出　　处：《长江流域资源与环境》2021年第6期1488-1499,共12页Resources and Environment in the Yangtze Basin

基　　金：中国科学院战略先导A类项目(XDA23040500);国家重点研发计划项目(2017YFC0506406);国家重点实验室专项经费项目(2019FBZ01)。

摘　　要：基于三峡水库干流和香溪河库湾2003年7月至2013年7月10年间的水质数据,采用Carlson营养状态指数营养状态指数及差值二维坐标评价方法,阐述三峡水库干流和香溪河库湾在蓄水前后10年以来的营养水平,评价其水体营养状态及其限制限制因素,通过建立干支流中营养状态与水动力条件的关系,判断在干支流上水动力条件是否是富营养化的限制因子。结果表明:蓄水10年来,三峡水库水体营养状态没有出现显著的上升或下降趋势。在三峡水库长江干流水动力条件对营养盐利用几乎没有调控作用。与水库干流不同,在香溪河支流库水动力条件在一定程度上能影响藻类对营养盐的利用,即可通过调节香溪河支流库湾水动力条件来控制藻类水华的发生。Based on the water quality monitoring data of the adjacent mainstream of Three Gorges Reservoir and Xiangxi Bay from July 2003 to July 2013, using Carlson trophic status index and Evaluation method of two-dimensional coordinate system for Carlson trophic status difference. We described their trophic level in the past 10 years before and after the impoundment of Three Gorges Reservoir, the trophic status of the water body and its limiting factors are evaluated. And the relationship between the trophic status and the hydrodynamic conditions in the mainstream and tributary streams was established to determine whether the hydrodynamic conditions on the main and tributary streams were the limiting factor of eutrophication. The results showed that the trophic status of Three Gorges Reservoir had not shown a significant upward or downward trend in the past 10 years. In Three Gorges Reservoir, the hydrodynamic conditions of the mainstream of the Yangtze River had little control effect on nutrient utilization. Different from the mainstream of Three Gorges Reservoir, the hydrodynamic conditions in the tributary Xiangxi Bay could affect the utilization of nutrients by algae to a certain extent, which indicated that we could control algal blooms by adjusting the hydrodynamic conditions of the tributary Xiangxi Bay.

关 键 词：三峡水库 香溪河库湾 富营养化 营养限制 水动力 

分 类 号：X825[环境科学与工程—环境工程] X52