1954—2013年太湖水位特征要素变化及成因分析

发布时间：2018-03-20 07:27

本文选题：太湖　切入点：水位要素变化规律　出处：《河海大学学报(自然科学版)》2016年01期 　论文类型：期刊论文

【摘要】：采用1954—2013年的逐日水位资料,系统分析和比较了太湖年内最高水位、最低水位及年平均水位共3种水位特征要素的年际变化规律,结合太湖流域降水资料和工程引水资料,揭示了导致三者发生阶段性变化的控制性因素。结果表明:(a)1954—2013年,太湖年内最高水位总体上不具有显著的变化趋势,其年际变化主要受控于汛期降水的年际周期性振荡;太湖年内最低水位、年内平均水位均具有显著的上升趋势,尽管两者在2000年之前的年际变化主要受控于太湖流域降水丰枯振荡,但在2000年之后的"引江济太工程"等大规模引水活动已成为两者在流域降水整体偏枯情况下仍保持较高水平的主导性因素。(b)沿江引水使太湖的年内最低水位出现时间的季节性分布特征发生了明显变化。
[Abstract]:Based on the daily water level data from 1954 to 2013, this paper systematically analyzes and compares the interannual variation law of the three water level characteristic elements in Taihu Lake, which are the highest water level, the lowest water level and the annual average water level, combined with the precipitation data of Taihu Lake basin and the engineering water diversion data. The results show that the maximum water level in Taihu Lake did not have a significant change trend during 1954-2013, and its interannual variation was mainly controlled by the interannual periodic oscillation of precipitation in flood season. The lowest water level and the annual average water level of Taihu Lake have a significant upward trend, although the interannual variation before 2000 is mainly controlled by the fluctuation of precipitation abundance and withered in Taihu Lake basin. However, after 2000, large-scale water diversion activities such as "diversion from the Yangtze River to the Pacific Ocean" have become the leading factor for both to maintain a high level of water diversion in the case of the overall dry rainfall in the basin. (B) diversion along the Yangtze River causes the lowest water level in Taihu Lake to appear in the year. The seasonal distribution of time has changed obviously.
【作者单位】：南京水利科学研究院水文水资源与水利工程科学国家重点实验室;太湖流域管理局水文局(信息中心);
【基金】：国家自然科学基金(51109136) 水利部公益性行业科研专项(201001002,201201072-2)
【分类号】：P333

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