Sedimentation in the riparian zone of the Three Gorges Reservoir, China
Sedimentation in the riparian zone of the Three Gorges Reservoir, China
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发表时间：
2010-06
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影响因子：
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通讯作者：
Bao Yuhai（鲍玉海）;Nan Hongwei（南宏伟）;He Xiubin（贺秀斌）;Zhang Xinbao（张信宝）;Long Yi（龙翼）
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作者：
Bao Yuhai（鲍玉海）;Nan Hongwei（南宏伟）;He Xiubin（贺秀斌）;Zhang Xinbao（张信宝）;Long Yi（龙翼）
三峡水库（TGR）的年水位波动约为。30 m，可以影响河岸带。这些变化包括土壤稳定或恢复、植被恢复、景观管理和环境卫生。然而，关于这一河岸带沉积过程的速率、幅度和变异性的资料缺乏。2007-2009年期间，沿三峡水库中游开展了一项实地监测方案。在15个监测样带设置了柱状沉积物捕集器和侵蚀销钉。145 ~ 150 m的平均沉积速率为5.8 cm ~(-1)， 150 ~ 175 m的平均沉积速率为2.3 cm ~（-1）。平均泥沙沉积速率约为。支流入口和浅滩的年~（-1）为12 cm， 145 ~ 150 m高度的年~（-1）最大值为18 cm。三峡库区沿岸泥沙淤积过程将对三峡库区生态和长期运行产生影响。
Annual water levels in the Three Gorges Reservoir (TGR) fluctuate by approx. 30 m, which can influence the riparian zone . Such changes include soil stabilization or restoration, re-vegetation, landscape management and environmental sanitation. However, there is a lack of information on the rates, magnitude and variability of sedimentation processes in this riparian zone . A field monitoring programme was conducted along the middle reach of the TGR during 2007-2009. Fifteen monitoring transects were instrumented with columnar sediment traps and erosion pins. Mean sediment deposition rates were 5.8 cm year~(-1) at the 145-150 m level and 2.3 cm year~(-1) at the 150-175 m level. The mean sediment deposition rate was approx. 12 cm year~(-1) at tributary inlets and shoals and a maximum of 18 cm year~(-1) occurred at the 145-150 m level. Sedimentation processes in riparian areas along the TGR will likely have an impact on the ecology and long-term operation of the TGR.