| 西北江网河来水来沙及分水分沙变化特征 |
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| 引用本文： | 蔡华阳,杨清书.西北江网河来水来沙及分水分沙变化特征[J].热带地理,2009,29(5). |
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| 作者姓名： | 蔡华阳 杨清书 |
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| 作者单位： | 中山大学河口海岸研究所,广州,510275 |
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| 基金项目： | 国家重点基础与发展研究项目 |
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| 摘 要： | 根据西、北江干流高要、石角和西北江网河区顶端马口、三水共4个代表水文站1960-2004年流量、输沙率的月均序列,分析西北江网河来水来沙及分水分沙变化特征,结果表明:西北江网河来水来沙季节变化明显,且西江比北江更为集中;西江的水沙变幅比北江小,西、北江输沙率年际变化大于流量年际变化;来水来沙均存在明显的3种尺度周期变化,即年内(0.3～0.7 a)、年际(1.2～6.6 a)和年代际(11.0～20.2 a)周期变化,以年代际变化最为显著;来水量长期变化趋势除马口站外均为递增,来沙量长期变化趋势除三水站外均为递减;1993年后西北江网河区顶端三水站分流分沙比显著增大,其与网河区大规模无序采沙活动密切相关.
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| 关 键 词： | 西北江网河 来水来沙 分水分沙 采沙 |
Characteristics of Flow Discharge and Sediment Transport in the West River and North River Network |
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| CAI Huayang,YANG Qingshu.Characteristics of Flow Discharge and Sediment Transport in the West River and North River Network[J].Tropical Geography,2009,29(5). |
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| Authors: | CAI Huayang YANG Qingshu |
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| Institution: | Institute of Estuarine and C gzhou 510275;China |
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| Abstract: | Based on 45-years(1960-2004) hydrological data at the four major hydrological stations including AGaoyao and Shijiao located in the mainstream of West River and North River,and Makou and Sanshui in the upper network of West River and North River,the characteristics of incoming water and sediment and diversion ratio of flow discharge and sediment transport in West River and North River network are analyzed.It is found that:(1) the seasonal variation of incoming water and sediment in West River and North Rive... |
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| Keywords: | West and North River network incoming water and sedimentsediment transport sand excavation |
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