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当前位置: 首页 > 文章 > 气候、水文和生态过程对洋河水库富营养化影响研究 水生态学杂志 2010,03 (3) 28-31
Position: Home > Articles > Effect of Climate,Hydrological and Ecological Processes on Yanghe Reservoir′s Eutrophicaiton Journal of Hydroecology 2010,03 (3) 28-31

气候、水文和生态过程对洋河水库富营养化影响研究

作  者：
高天珩;钱新;储昭升;王晟;武俊;揣小明;杨柳燕
单  位：
南京农业大学生命科学学院;中国环境科学研究院;污染控制与资源化研究国家重点实验室
关键词：
洋河水库;水温;藻华;富营养化
摘  要：
为了探索洋河水库富营养化和蓝藻水华暴发的原因,对水库的入库水量、水下地形、温跃层和叶绿素a含量等进行测定,分析了气候、水文和生态过程对洋河水库富营养化和藻华暴发的影响。研究结果表明,全球气候变暖导致洋河水库来水量下降,水库水力停留时间延长,夏季水温上升,为蓝藻水华暴发提供了有利的条件。洋河水库水下地形和坝前较深水位不利于大型水生植被的生长,随着外源营养盐的不断输入,引发藻类异常增殖。当随风飘到库区北部的水华蓝藻密度超过一定数量后,会对该区生长的水生植被产生毒害作用,导致水生植被消亡。洋河水库夏季产生温跃层,下层有机物的厌氧分解和水生态系统食物链的恶化,营养盐滞留时间和水体中浓度增加,同时渔业资源锐减,鲢、鳙数量下降,从而导致蓝藻水华大暴发。洋河水库富营养化和蓝藻水华暴发是自然因素和人为因素综合作用的结果,只有加强外源和内源污染控制,同时进行水生态系统的调控,才能有效改善洋河水库的水环境质量。
译  名：
Effect of Climate,Hydrological and Ecological Processes on Yanghe Reservoir′s Eutrophicaiton
作  者：
GAO Tian-heng1,QIAN Xin2,CHU Zhao-sheng3,WANG Sheng2, WU Jun2,CHUAI Xiao-ming2,YANG Liu-yan2 (1. College of Life Sciences,Nanjing Agricuhural University,Nanjing 210095,China; 2. State Key Laboratory of Pollution Control and Resource Reuse,School of the Environment, Nanjing University,Nanjing 210093,China; 3. Chinese Research Academy of Environmental Sciences,Beijing 100012,China )
关键词：
Yanghe Reservoir;Water temperature;Cyanobacterial bloom; Eutriphication
摘  要：
In order to explore eutrophication and algal blooms in Yanghe Reservoir,the underwater topographic map,water temperature and chlorophyll a were measured and then the effect of climate,hydrological and ecological processes on Yanghe Reservoir's eutrophicaiton was discussed. The results show that global warming led to shorten of input water quantity to extend the hydraulic retention time in Yanghe reservoir while water temperature rises in summer which provided favorable conditions for an outbreak of algal blooms in the summer. Underwater topography and deep water depth near dam were not benefit to growth of macrophytes. When wind-driven cyanobacterial density is high enough to from toxic effect on macrophytes in northern of Yanghe Reservoir with the increase of the input of exogenous nutrients,and macrophytes disappeared at last. There is thermocline in summer to induce the anaerobic degradation of organic matters and deterioration of food web of aqueous ecosystems while the nutrient retention time increases,the fishery resource declines sharply and ratio of silver carp and bighead decreases. These environmental factors mentioned above result in the large outbreaks of algal blooms. Therefore,the eutrophication and algal blooms in Yanghe reservoir is result of combined action of natural factors and anthropic factors. Base on the control of pollutants input,the reduction in the inner pollutant source and regulation of aqueous ecosystems is benefit to improve the water quality in Yanghe Reservoir.

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