| 1956—2008年鄱阳湖流域水沙输移趋势及成因分析 |
| |
| 引用本文： | 罗蔚,张翔,邓志民,陈龙,Christopher J Gippel.1956—2008年鄱阳湖流域水沙输移趋势及成因分析[J].水科学进展,2014,25(5):658-667. |
| |
| 作者姓名： | 罗蔚 张翔 邓志民 陈龙 Christopher J Gippel |
| |
| 作者单位： | 1.武汉大学水资源与水电工程科学国家重点实验室, 湖北武汉 430072; |
| |
| 基金项目： | 国家自然科学基金资助项目（71073115）；江西省水利厅科技项目（KT201019） |
| |
| 摘 要： | 利用鄱阳湖流域代表性水文站1956—2008年实测年径流量及年输沙量资料序列，采用Mann-Kendall秩相关检验法，研究鄱阳湖流域水沙量年际变化趋势和可能发生突变的时间，并从流域降雨、用水、水库拦沙、水土流失及其治理等方面分析了鄱阳湖流域水沙变化的主要影响因素。研究结果表明:鄱阳湖地区来水量和出湖水量有小幅增大趋势；鄱阳湖流域来沙量呈异常显著减小趋势，发生突变的年份为1998—1999年；实测出湖沙量从2002年开始呈明显的减少趋势。通过对有关影响因素的研究，发现鄱阳湖流域气候变化降雨量减少对近10年鄱阳湖出入湖径流量的减少影响显著；水库滞沙是鄱阳湖入湖沙量减少的主要原因；出湖沙量变化主要受上游水库群的影响，还有近年湖区采砂的影响。
|
| 关 键 词： | 鄱阳湖 水沙 Mann-Kendall检验 趋势分析 成因分析 |
| 收稿时间： | 2013-09-02 |
Runoff and sediment load transport and cause analysis in Poyang Lake basin over the period 1956—2008 |
| |
| LUO Wei,ZHANG Xiang,DENG Zhimin,CHEN Long,Christopher J Gippel.Runoff and sediment load transport and cause analysis in Poyang Lake basin over the period 1956—2008[J].Advances in Water Science,2014,25(5):658-667. |
| |
| Authors: | LUO Wei ZHANG Xiang DENG Zhimin CHEN Long Christopher J Gippel |
| |
| Affiliation: | 1.State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China;2.Jiangxi Water Conservancy Planning and Designing Institute, Nanchang 330029, China;3.Hubei Provincial Collaborative Innovation Center for Water Resources Security, Wuhan 430072, China;4.Australian Rivers Institute, Griffith University, Nathan Queensland 4111, Australia |
| |
| Abstract: | This paper characterizes the temporal and spatial patterns evident in annual runoff and sediment load data from selected hydrological stations in the Poyang Lake region over the period 1956—2008. The Mann-Kendall test was used to analyze for trend, interannual variability was characterized, and change point years were identified. The main causes of the observed patterns in runoff and sediment load were investigated among the variables catchment rainfall and runoff, reservoir sediment trapping, soil erosion and soil conservation works. The results indicate that overall lake inflows and outflows display a slightly increasing trend. Inflowing sediment load to the lake displayed a significant decreasing trend, with a change point occurring in 1998—1999. Outflowing sediment load from the lake for the 10 years beginning in 2002 displayed a decreasing trend. Reduced rainfall within the catchment of Poyang Lake had a significant influence on the observed pattern of decreasing lake inflow and outflow, while trapping of sediment within catchment reservoirs was the primary reason for reducing the sediment load to the lake. The reduced sediment outflow from the lake was mainly influenced by the reduced sediment inflow and sand mining within the lake. |
| |
| Keywords: | Poyang Lake runoff and sediment load Mann-Kendall tendency analysis causes |
|
| 点击此处可从《水科学进展》浏览原始摘要信息 |
|
点击此处可从《水科学进展》下载全文 |
