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引用本文:肖飞,蔡述明,杜耘.洪湖湿地抗渍蓄洪能力分析.湖泊科学,2003,15(Z1):243-248. DOI:10.18307/2003.sup30
XIAO Fei,CAI Shuming,DU Yun.Analysis on the Capacity of Storing Floodwater and Withstanding Waterlogging of Honghu Wetland. J. Lake Sci.2003,15(Z1):243-248. DOI:10.18307/2003.sup30
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洪湖湿地抗渍蓄洪能力分析
肖飞, 蔡述明, 杜耘
中国科学院测量与地球物理研究所, 武汉 430077
摘要:
鉴于洪湖湿地为渍涝灾害的多发区,并在江汉平原具有一定的代表意义,本文以该区为研究对象,利用遥感和地理信息系统技术进行分析,以便正确认识洪湖湿地的抗渍蓄洪能力.建立洪湖湿地的TIN模型以分析该区的抗渍蓄洪能力,并分别计算出洪湖湖泊的调蓄能力和整个洪湖湿地水位同蓄水面积及蓄水容量之间的关系.通过TIN模型与2001年的LandSat-ETM+遥感图像的叠加分析,统计出不同湿地类型的平均高程.依此计算出23. Ini高程线为水稻田的耕作线,由此推算出水稻基本不受影响条件下洪湖湿地的调蓄容量为1.087×109 m3.并提出在该区建立基于地理信息系统的减灾决策体系的建议,以便进行有效的防灾减灾.
关键词:  洪湖湿地,抗渍蓄洪
DOI:10.18307/2003.sup30
分类号:
基金项目:中国科学院知识创新工程重要方向项目(KSCX2-SW-110、KZCX3-SW-331)联合资助
Analysis on the Capacity of Storing Floodwater and Withstanding Waterlogging of Honghu Wetland
XIAO Fei, CAI Shuming, DU Yun
Institute of Geodesy and Geophysics, CAS, Wuhan 430077, P. R. China
Abstract:
Whereas the fact that Honghu wetland is representative in Jianghan (Yangtze-Hanjiang Rivers) plain as a Waterlogging accident-prone area, Honghu wetland was studied using the methods of Geographical Information System and Remote Sensing to find out its ability of storing floodwater and withstanding waterlogging. In this paper, TIN model was established, thereby the relationships between water level and water area of Honghu Lake and Honghu wetland were calculated, their relationships between water level and water volume were also computed. Through the overlaying analysis to the TIN model and the image of Landsat-ETM+ of July 2001, the average elevation of each wetland type was counted. Then the altitude of 23. lm was turned out to be the cultivation line of paddy field. From this, the sluice volume was calculated to be 1.087×109 m3 on condition that the paddy is uninjured. At last, the advice of setting up a decision-making system of decreasing disasters based on GIS was put forward in order to be helpful to the work of decreasing flood and waterlogging disasters.
Key words:  Honghu wetland  storing floodwater and withstanding waterlogging
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