三峡水库洪水调度对香溪河藻类群落结构的影响
Effects of flood regulation on phytoplankton community structure in the Xiangxi River, a tributary of the Three Gorges Reservoir
查看参考文献27篇
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文摘
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以三峡大坝汛期洪水调度为契机,于2013年7月在香溪河开展原位监测,研究了洪水调度对藻类群落结构的影响.结果显示:在洪水调度期间香溪河水位变动范围是145.63~148.36m,河流中上游平均流速变化幅度小于河口平均流速变化幅度,中上游与河口的平均流速存在显著差异(P<0.05).调度前香溪河的藻类优势类群为蓝藻与硅藻,蓝藻所占比例高于硅藻,调度结束后,中上游水域硅藻占优势,河口区域蓝藻所占比例升高.香溪河水环境特征与藻类群落结构在洪水调度期间发生了显著改变,Shannon-Weaver指数趋于下降.研究结果表明:三峡大坝拦蓄洪水的过程显著改变了香溪河水环境条件,洪水顶托作用首先改变了支流的水文水动力学特征和水质状况,随后藻类群落快速变化响应了这种改变.洪水调度所营造的动态水位使得靠近大坝的支流生境受到强烈冲击和破坏,导致了藻类种类和生物量的变化;由此可见,水库的动态水位可改变支流的藻类群落结构,有助于抑制和延缓支流水华的发生. |
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其他语种文摘
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Flood control is an important function for Three Gorges Reservoir (TGR). In July 2013 there was 3 flood peaks in TGR and flood regulation was used to block the deluge and reduce the impact on the middle and lower reaches of the Yangtze River. An in situ investigation was conducted to screen the effects of flood regulation on phytoplankton community structure in the Xiangxi River. During the course of flood regulation, the water level in Xiangxi River ranged from 145.63m to 148.36m, the change of the average velocity in the estuary was higher than that in the midstream. There was a significant difference in average velocity between the estuary and midstream (P<0.05). Before the flood regulation, the dominant algal taxa were cyanophyta and bacillariophyta, cyanophyta had a higher proportion in both sampling sites. During the flood regulation period, hydrodynamic characteristics and algal community structure were significantly changed, Shannon-Weaver index decreased. After the flood regulation, diatoms were dominant in the midstream, while the proportion of cyanophyta increased gradually in the estuary. The flood regulation changed the environmental conditions. Hydrological and hydrodynamic characteristics in backwater caused by flooding regulation has been changed markedly, which influenced water quality of tributaries; consequently, followed by rapid changes in phytoplankton community. Results indicated the fluctuation of water level caused by flood regulation destroyed the habitat of algae strongly, and then leads to the changes of community structure. It could be deduced that such flood regulation would be helpful to inhibit and delay the formation of algal bloom in the tributaries of Three Gorges Reservoir. |
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来源
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中国环境科学
,2014,34(7):1863-1871 【核心库】
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关键词
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洪水调度
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藻类
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群落结构
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三峡水库
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地址
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1.
中国科学院水生生物研究所, 湖北, 武汉, 430072
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中国长江三峡集团公司枢纽运行管理局, 湖北, 宜昌, 443133
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1000-6923 |
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学科
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环境科学基础理论 |
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基金
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国家自然科学基金项目
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三峡水库水华应急监测项目
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文献收藏号
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CSCD:5199270
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参考文献 共
27
共2页
|
|
1.
蔡庆华. 三峡水库富营养化问题与对策研究.
水生生物学报,2006,30(1):7-11
|
被引
125
次
|
|
|
|
|
2.
Li X A. Dynamic control of flood limited water level for reservoir operation by considering inflow uncertainty.
J. Hydrol,2010,391(1/2):126-134
|
被引
1
次
|
|
|
|
|
3.
王才君. 三峡水库动态汛限水位洪水调度风险指标及综合评价模型研究.
水科学进展,2004,15(3):376-381
|
被引
22
次
|
|
|
|
|
4.
郭文献. 三峡水库生态调度目标研究.
水科学进展,2009,20(4):554-559
|
被引
39
次
|
|
|
|
|
5.
Agostinho A A. Flood regime, dam regulation and fish in the Upper Parana River: effects on assemblage attributes, reproduction and recruitment.
Reviews in Fish biology and Fisheries,2004,14(1):11-19
|
被引
6
次
|
|
|
|
|
6.
Peng C. Seasonal succession of phytoplankton in response to the variation of environmental factors in the Gaolan River, Three Gorges Reservoir, China.
Chinese Journal of Oceanology and Limnology,2013,31(4):737-749
|
被引
3
次
|
|
|
|
|
7.
国家环境保护总局.
水和废水监测分析方法, (4版),2002
|
被引
18
次
|
|
|
|
|
8.
Zhou G J. Phytoplankton variation and its relationship with the environment in Xiangxi Bay in spring after damming of the Three-Gorges, China.
Environ. Monit. Assess,2011,176(1/4):125-141
|
被引
6
次
|
|
|
|
|
9.
Eker E. Phytoplankton distribution in the western and eastern Black Sea in spring and autumn 1995.
ICES Journal of Marine Science,2000,56:15-22
|
被引
2
次
|
|
|
|
|
10.
胡鸿均.
中国淡水藻类-系统,分类及生态,2006
|
被引
6
次
|
|
|
|
|
11.
陈宇炜. 太湖梅梁湾藻类及相关环境因子逐步回归统计和蓝藻水华的初步预测.
湖泊科学,2001,13(1):63-71
|
被引
91
次
|
|
|
|
|
12.
Kirk J T O.
Light and photosynthesis in aquatic ecosystems,1994
|
被引
47
次
|
|
|
|
|
13.
Keylock C J. Simpson diversity and the Shannon-Wiener index as special cases of a generalized entropy.
Oikos,2005,109(1):203-207
|
被引
56
次
|
|
|
|
|
14.
Domingues R B. Nutrients, light and phytoplankton succession in a temperate estuary (the Guadiana, south-western Iberia).
Estuarine, Coastal and Shelf Science,2005,64(2):249-260
|
被引
8
次
|
|
|
|
|
15.
Phlips E. Factors affecting the abundance of phytoplankton in a restricted subtropical lagoon, the Indian River Lagoon, Florida, USA.
Estuarine, Coastal and Shelf Science,2002,55(3):385-402
|
被引
2
次
|
|
|
|
|
16.
郑丙辉. 三峡水库营养状态评价标准研究.
环境科学学报,2006,26(6):1022-1030
|
被引
72
次
|
|
|
|
|
17.
Kirk J T. The vertical attenuation of irradiance as a function of the optical properties of the water.
Limnology and Oceanography,2003,48(1):9-17
|
被引
9
次
|
|
|
|
|
18.
Melin F. Assessment of apparent and inherent optical properties derived from SeaWiFS with field data.
Remote sensing of environment,2005,97(4):540-553
|
被引
3
次
|
|
|
|
|
19.
徐耀阳. 香溪河库湾春季水华期间水体光学特征及相关分析.
水生生物学报,2006,30(1):84-88
|
被引
14
次
|
|
|
|
|
20.
Reynolds C S.
The ecology of phytoplankton,2006
|
被引
67
次
|
|
|
|
|
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