| 江南运河水文情势变化分析 |
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| 引用本文： | 吴娟,林荷娟,武剑,季同德.江南运河水文情势变化分析[J].水文,2018,38(4):78-82. |
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| 作者姓名： | 吴娟 林荷娟 武剑 季同德 |
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| 作者单位： | 太湖流域管理局水文局(信息中心) |
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| 基金项目： | 城镇化快速发展背景下太湖流域防洪关键问题研究项目(201501014)； |
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| 摘 要： | 随着太湖流域城镇化进程的加快,江南运河水文情势发生了明显变化。基于运河代表站水位资料、水利分区降雨资料、沿长江(江苏段)主要口门引排水量、出入太湖水量资料,采用Mann-Kendall趋势检验与突变检验法,对代表站水位进行了研究,并初步提出运河水文情势变化的可能原因。结果表明:(1)常州年最高水位及汛期5月、9月平均水位上升可能与湖西区四闸净引水量上升有关;而洛社与无锡(大)汛期5月、9月平均水位上升与武澄锡虞区沿长江(江苏段)口门净引水量显著上升有关,6月、7月、8月平均水位上升可能与地区涝水出路受阻导致原先入太湖的水量改为入运河有关;受张家港、十一圩闸、望虞闸引水及运河上游来水的共同影响,苏州(枫桥)亦出现水位同步上升的趋势。(2)运河代表站水位变异点主要发生在90年代中后期到21世纪初期,与太湖流域各省市陆续进入城镇化快速发展阶段的时间基本一致;同样的降雨,城镇化快速发展后的水位涨幅均明显高于城镇化快速发展前,以无锡(大)最明显。
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| 关 键 词： | 江南运河 Mann-Kendall检验法 城镇化 水文情势 降雨径流关系 |
| 收稿时间： | 2017/7/10 0:00:00 |
Analysis of Hydrological Regime of Jiangnan Canal |
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| WU Juan,LIN Hejuan,WU Jian,JI Tongde.Analysis of Hydrological Regime of Jiangnan Canal[J].Hydrology,2018,38(4):78-82. |
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| Authors: | WU Juan LIN Hejuan WU Jian JI Tongde |
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| Institution: | Bureau of Hydrology Information Center, Taihu Basin Authority, Shanghai 200434, China |
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| Abstract: | The acceleration of urbanization in the Taihu Basin leads to hydrological regime changing significantly in the Jiangnan Canal. Based onthe precipitation, water stage, water diversion and drainage, as well as net inflow into the Taihu Lake, the water stage variation characteristics andcauses were analyzed by using Mann-Kendall testing. The results show that: (1) The increasing trend of the annual highest water stage, monthlyaverage water stage in May and September in Changzhou is resulted from the increase of the net transferred water from Huxi region. The increasingtrend of the average water stage in May and September in Luoshe and Wuxi is resulted from the increase of net transferred water fromWuchengxiyu region, while the increasing trend of the average water stage in June, July and August may be resulted from floodway deficiency. Thesynchronous increasing trend of the water stage in Suzhou is influenced by the increasing amount of sluice water diversion as well as upstreamwater intake. (2) In accordance with the urbanization acceleration process over the Taihu Basin, the significant mutation points of water stage onthe Jiangnan Canal occurred from the late 1990s to early 21st century. Under the same precipitation condition, the water stage rise more afterurbanization acceleration, especially inWuxi. |
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| Keywords: | Jiangnan Canal Mann-Kendall test urbanization hydrological regime rainfall-runoff relationship |
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