YE Zheng-wei.A Basic Analysis on the Characteristic and Mechanism of the Flood Disaster in Hongze Lake[J].Research of Soil and Water Conservation,2006,13(04):90-92,273.
淮河洪泽湖洪涝灾害特征与成灾本底机理分析
- Title:
- A Basic Analysis on the Characteristic and Mechanism of the Flood Disaster in Hongze Lake
- Keywords:
- Hongze Lake; flood hazards; rainstorm; mechanism
- 分类号:
- P426.616
- 摘要:
- 从介绍洪泽湖概况入手,分析了洪泽湖洪涝灾的特征,即:洪涝时间上的历史延续性与阶段性,洪涝类型的多元性,洪涝成灾空间趋于集中、频度增大,灾害的经济损失日趋增加.从灾害系统的本底特征上探讨了洪涝灾害的成灾机理,认为:典型洪涝孕灾区的过渡性地理位置是导致洪涝发生的大环境背景原因;流域暴雨降水高度集中的特征是洪涝的触发器;黄河夺淮历史和泥沙淤积而成的“悬湖”和“倒比降”的脆弱性地形地貌是洪涝发生的历史根本原因;下游排洪通道标准低、行洪能力不足以及库容和湖面减小的影响都加重加大了洪涝灾害的程度和频次.
- Abstract:
- Based on the introduction of Hongze Lake,the basic characteristic and the mechanism of the flood in Hongze Lake are analyzed.The features are discussed: temporal continuous and phase characteristic of flood in Hongze Lake,3 types of flood hazards,spatial concentration in flood area;increase in flood frequency and economic loss.Typical vulnerable geographic transition location is the basic environment background of the flood,heavily intensified precipitation triggers the flood in the lake drainage,while,relatively to the surroundings historically induced high altitude and the inverse vertical section ratio are the fundamental reason,and the low flood discharge standard combined with the human influence also plays an important part in the flood disaster.The above mechanism could be a scientific guide for the prevention of the flood disaster in the Hongze Lake,the middle branch of the Huaihe River.
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备注/Memo
收稿日期:2005-9-13
基金项目:江苏省高校自然科学研究计划基金项目(03KJB170014)
作者简介:叶正伟(1973- ),男,硕士,安徽黄山人,讲师,主要从事自然灾害与农业经济方面的研究工作,已发表论文10余篇.