Flood Risk in Medium and Small Basin During Urbanization——A Case Study on East and West Streams Watershed in Xiamen City

XIANG Jie; XU Youpeng; YANG Jie; LI Guang; WANG Yuefeng; DENG Xiaojun

doi:10.13961/j.cnki.stbctb.2016.02.053

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Flood Risk in Medium and Small Basin During Urbanization——A Case Study on East and West Streams Watershed in Xiamen City

- Flood Risk in Medium and Small Basin During Urbanization——A Case Study on East and West Streams Watershed in Xiamen City
- Bulletin of Soiland Water Conservation Vol. 36, Issue 2, Pages: 283-287(2016)
- 作者机构：
  
  南京大学地理与海洋科学学院,江苏,南京,210023
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2016.02.053
  CLC：
- Published：2016
- 稿件说明：
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XIANG Jie, XU Youpeng, YANG Jie, et al. Flood Risk in Medium and Small Basin During Urbanization——A Case Study on East and West Streams Watershed in Xiamen City[J]. Bulletin of Soiland Water Conservation, 2016, 36(2): 283-287.
DOI：

XIANG Jie, XU Youpeng, YANG Jie, et al. Flood Risk in Medium and Small Basin During Urbanization——A Case Study on East and West Streams Watershed in Xiamen City[J]. Bulletin of Soiland Water Conservation, 2016, 36(2): 283-287. DOI： 10.13961/j.cnki.stbctb.2016.02.053.

摘要

[目的] 以厦门市东西溪流域为例

对城镇化背景下中小流域洪水风险进行评价和研究

为该区有效实施防洪减灾措施提供参考依据。[方法] 以GIS空间分析作支持

将暴雨洪水频率分析与平原区洪水淹没模拟计算相结合

基于MIKE21平面二维水动力学模型进行洪水风险分析

对研究区洪水风险程度以及淹没状况进行模拟计算。[结果] 绘制出厦门市东西溪流域动态洪水风险图

并根据洪水淹没区内的土地利用等因素的变化等实际情况

调整不同频率洪水淹没范围

实现东西溪流域洪水风险图的实时动态更新。[结论] 研究区洪灾风险主要分布在东溪、西溪、汀溪等主干流河段

总体上呈现随着洪水重现期增大

灾害风险由上游向下游

由近岸向远岸不断扩大的趋势。

Abstract

[Objective] The flood risk evaluation in medium and small basin caused by urbanization were carried out in East and West Stream watershed in Xiamen City in order to provide some references for the flood control and disaster mitigation in study watershed. [Methods] Based on the spatial analysis of GIS and the two-dimensional hydrodynamic model named MIKE21

the flood risk analysis and submerged conditions were simulated by the combined rainstorm flood frequency analysis and plain flood submerging model. [Results] The dynamic flood hazard map of the East and West streams watershed in Xiamen City was created

together with the current land use change condition

the instant flood hazard map is able to establish according to the flood frequency. [Conclusion] The flood risk in the study area was mainly distributed in the main stream of the East stream

West stream and Ting stream watershed. With the increase of the flood recurrence period

the flood hazard tends to increase from upstream to downstream and from near-shore to off-shore.

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references

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