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地理科学  2010 

三峡水库蓄水以来长江中下游干流河床沉积物粒度变化的初步研究

, PP. 103-107

Keywords: 沉积物,粒度,三峡水库,长江

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Abstract:

于2008年在宜昌至徐六径之间的1600km干流河道进行30个横断面取样和分析,与前人于三峡水库蓄水前的取样分析资料进行对比。结果表明①三峡水库蓄水以来坝下游约400km的干流河床(宜昌至城陵矶)沉积物出现全程粗化,越近大坝粗化越明显,这种沉积物粗化与水库蓄水后坝下游河床出现的强烈侵蚀密切相关;②蓄水前后城陵矶以下的1200km干流河床沉积物粒度的沿程趋势基本一致;③蓄水后河床沉积物仍保持沿程向下游变细且越近河口变化越缓慢的格局。

References

[1]  Yang S L,Zhang J,Dai S B,et al.Effect of deposition and erosion within the main river channel and large lakes on sediment delivery to the estuary of the Yangtze River[J].Journal of Geophysical Research,2007,112:F02005,1-13.
[2]  Church M,Kellerhals R.On the statistics of grain size variation along a gravel river[J].Canadian Journal of Earth Science,1978,7(15):1151-1160.
[3]  Rice S,Church M.Which tributaries disrupt downstream fining along gravel-bedrivers[J].Geomorphology,1998,22(1):39-56.
[4]  杨世伦.海滨沼泽沉积物特征[J].地理科学,1987,7(4):374~382.
[5]  李子君,李秀彬.近45年来降水变化和人类活动对潮河流域年径流量的影响[J].地理科学,2008,28(6):809~818.
[6]  高华中,姚亦锋.近50年来人类活动对博斯腾湖水位影响的量化研究[J].地理科学,2005,25(3):305~309.
[7]  吴小根,王爱军.人类活动对苏北潮滩发育的影响[J].地理科学,2005,25(5):614~620.
[8]  杜景龙,杨世伦.长江口北槽深水航道工程对周边滩涂冲淤影响研究[J].地理科学,2007,27(3):390~394.
[9]  Yang S L,Zhang J,Zhu J,et al.Impact of Dams on Yangtze River Sediment Supply to the Sea and Delta Wetland Response[J].Journal of Geophysical Research,2005,110:F03006, 1-12.
[10]  Yang S L, Zhang J,Xu X J.Influence of the Three Gorges Dam on downstream delivery of sediment and its environmental implications, Yangtze River[J].Geophysical Research Letters,2007, 34:1-5.
[11]  Surian N.Downstream variation in grain size along an Alpine river: analysis of controls and processes[J].Geomorphology,2002,43(1):137-149.
[12]  何华春,丁海燕,张振克,等.淮河中下游洪泽湖湖泊沉积物粒度特征及其沉积环境意义[J].地理科学,2005,25(5):590~596
[13]  马小凡,郭晓泽,王 菊,等.水坝工程建设与生态保护的利弊关系分析[J].地理科学,2005,25(5):621~62.5
[14]  张 仁.长江三峡工程的泥沙问题[J].中国三峡建设,2007,(1):5~9.
[15]  洪 林,董磊华,李文哲.三峡工程建库后对洞庭湖水位、泥沙和水质的影响分析[J].中国水利,2007,(6):13~14.
[16]  李景保,尹辉卢,卢承志,等.洞庭湖区的泥沙淤积效应[J].地理学报,2008,63(5):514~523.

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