| 三峡小江回水区真光层深度及其影响因素分析 |
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| 引用本文： | 方芳,周红,李哲,龙曼,郭劲松,盛金萍.三峡小江回水区真光层深度及其影响因素分析[J].水科学进展,2010,21(1):113-119. |
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| 作者姓名： | 方芳 周红 李哲 龙曼 郭劲松 盛金萍 |
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| 作者单位： | 1.重庆大学城市建设与环境工程学院, 重庆, 400045; |
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| 基金项目： | 中国科学院西部行动计划资助项目，国家水专项资助项目 |
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| 摘 要： | 为探讨三峡水库运行初期小江回水区水体的光学特性,2007年5月~2008年5月对回水区5个断面水下光合有效辐射(PAR)与常规水质指标进行监测,分析了真光层深度的时空特征及其影响因素.研究区域真光层深度空间差异不明显,但季节变化显著,冬季最高,夏季最低.回归分析表明光合有效辐射(PAR)衰减系数与透明度、总悬浮物浓度有显著的相关性(R2=0.861 9,R2=0.764),与叶绿素a相关性不明显(R2=0.011 3).进一步研究分析表明真光层深度、总悬浮物浓度、叶绿素a主要受小江河口流量、小江回水区水位的影响,复杂的水动力条件与独特的水文条件是影响三峡水库小江回水区真光层深度变化的主要因素.
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| 关 键 词： | 三峡水库 小江回水区 真光层 透明度 总悬浮物质 叶绿素a |
| 收稿时间： | 2009-02-02 |
Spatiotemporal variations of euphotic depth and its causing factors in Xiaojiang River backwater area of Three Gorges |
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| FANG Fang,ZHOU Hong,LI Zhe,LONG Man,GUO Jin-song,SHENG Jin-ping.Spatiotemporal variations of euphotic depth and its causing factors in Xiaojiang River backwater area of Three Gorges[J].Advances in Water Science,2010,21(1):113-119. |
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| Authors: | FANG Fang ZHOU Hong LI Zhe LONG Man GUO Jin-song SHENG Jin-ping |
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| Affiliation: | 1.Faculty of Urban Construction and Environmental Engineering Chongqing University, Chongqing 400045, China;2.Key Laboratory of Three Gorges Reservoir Region's Eco-Environment of Ministry of Education, Chongqing University, Chongqing 400045, China |
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| Abstract: | Spatiotemporal variations of euphotic depth and its causing factors are investigated for the early impounding stage of Three Gorges Reservoir in the backwater area of Xiaojiang River that is a tributary of the Yangtze River.Water samples were taken at five cross-sections in the backwater area during the period May,2007 through May,2008.The photosynthetically active radiation(PAR) and conventional water quality monitoring indices were derived from the water samples for analysis in this study.The results show... |
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| Keywords: | Three Gorges Reservoir Xiaojiang River backwater area euphotic depth secchi disc transparency total suspended solids chlorophyll-a |
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