| 引用本文: | 郭鹏,陈晓玲,刘影.鄱阳湖湖口、外洲、梅港三站水沙变化及趋势分析(1955-2001年).湖泊科学,2006,18(5):458-463. DOI:10.18307/2006.0503 |
| GUO Peng,CHEN Xiaoling,LIU Ying.Analysis on the runoff and sediment transportation in the Houkou, Waizhou and Meigang Stations of Lake Poyang during 1955-2001. J. Lake Sci.2006,18(5):458-463. DOI:10.18307/2006.0503 |
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| 摘要: |
| 对鄱阳湖流域三个主要控制站湖口、外洲和梅港多年(1955-2001年)水沙数据进行了统计分析,利用滑动平均法,Spearman秩次相关检验、线性回归检验方法对三个测站的水沙变化趋势进行了分析检验,结果表明,鄱阳湖泥沙出湖集中于长江大汛前的2-6月,在长江7-9月大汛期间,会出现长江泥沙倒灌鄱阳湖的情况.湖口站近期(1990-2001年)径流量和输沙量变幅都非常大,同上世纪80年代相比,年均径流量增加255.3×108 m3.年均减少沙量0.29×108 t;外洲站近期的输沙量明显减少,沙量分别为70年代前、70年代、80年代的49.6%、48.7%和52.3%;梅港站径流量略微增加沙量无明显变化趋势.从入湖径流来看,赣江和信江占52.4%,入湖泥沙量占了76.0%以上.从赣江和信江水沙总体变化趋势来看,赣江径流量变化趋势不明显,而输沙量具有明显减少的趋势;信江径流量增加趋势明显,输沙量基本无明显趋势.鄱阳湖流域水沙变化主要受人类活动的影响.土地利用方式的改变和流域水利工程设施的修建极大地影响了流域水沙特征及其变化趋势. |
| 关键词: 鄱阳湖 水沙变化 趋势分析 相关检验 |
| DOI：10.18307/2006.0503 |
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| 基金项目:“973”项目(2003CB415205);江西师范大学鄱阳湖生态环境与资源研究教育部重点实验室开放基金项目(200401006(1))联合资助 |
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| Analysis on the runoff and sediment transportation in the Houkou, Waizhou and Meigang Stations of Lake Poyang during 1955-2001 |
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GUO Peng1, CHEN Xiaoling1,2, LIU Ying2
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1.State Key Lab. of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan Univ., Wuhan 430076, P. R. China;2.Key Lab. of Eco-environment and Resources of Poyang Lake of MOE, Jiangxi Narmal Univ., Nanchang 330027, P. R. China
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| Abstract: |
| The changing characteristics and tendency of runoff and sediment transport in the Poyang Lake seriously affected the sustainable development in the Lake Poyang area and the middle reach of the Yangtze River. This paper statistically analyses the runoff and sediment transport of 3 major stations in the Lake Poyang catchment. Compared with the annual runoff and sediment transport before 1990, there were some obviously changes of annual sediment transport in the term of 1990-2001. Through several non-parameter statistical methods such as the moving average, the Spearman order correlativity and the linear regression analysis, the paper concludes that during the last five decades (1955-2001), an increase of runoff at Hukou Station was noted while no obvious sediment transportation decrease was observed ;as to the Waizhou Station, the sediment transportation was decreased;in Meigang Station, the increase of runoff was small whereas the sediment transportation changed little. The rainfall variation, wa-ter-soil erosion measures, reservoir built and the evolution of land use etc. could the major factors that lead to such change. That the human activity have played a more important role, especially in the past decades. |
| Key words: lake Poyang the changes of runoff and sediment tendency analysis |
