期刊论文

Feng, Chang(35909538@qq.com)

中文

农业工程学报

1002-6819

2023

39

3

92-101

10.11975/j.issn.1002-6819.202211025

本校为第一机构

为刻画水系演变对洪水风险的影响，该研究区别于传统洪水风险评价方式，着重考虑水系演变的综合定量化研究，以湘江流域为例，构建基于水系演变的洪水风险评价体系，运用有别于主观赋值、具有一定客观性的熵权法，从致灾因子危险性、孕灾环境敏感性、承灾体脆弱性和防洪减灾能力4个维度开展1995-2015年洪水风险评价体系验证研究。研究结果表明：1)1995-2015年，研究区水系大体呈衰减趋势且各市域之间水系变化差异大，其中河网密度和支流发育系数衰减率最高，分别达30.96%、34.01%，河道趋于主干化，单一化；2)基于水系演变的洪水风险评价表明，期内，区内洪水风险程度逐渐提高，高风险地区发生在...

Conventional assessment cannot fully depict the impact of river system evolution on flood risk in recent years. In this study, a four-dimensional assessment system of flood risk was proposed considering the evolution of the river network system in Xiangjiang River Basin. A comprehensive and quantitative investigation was also made on the spatiotemporal evolution of the river network. The entropy-weight method was used to verify the assessment system of flood risk from 1995 to 2015 from four dimensions: the risk of disaster-causing factors, the ...