期刊论文

中文

水土保持通报

1000-288X

2015

35

2

274-278

10.13961/j.cnki.stbctb.2015.02.052

国家自然科学基金项目“我国亚热带稻区旱灾风险评估与安全减灾机理研究：以衡阳盆地为例”（41171075） 湖南省科技厅计划资助项目（2012FJ3019） 湖南省重点学科人文地理支持项目〔湘教通（2011）76号〕

本校为第一机构

[目的]对南方典型区域的旱灾风险进行评估,为南方防旱减灾决策提供依据。[方法]运用降水标准化指数法（SPI）对2013年湖南省衡阳市干旱危险性进行评价,构建评估指标体系,借助数学模型评估旱灾脆弱性。[结果]衡阳县、祁东县为特旱,衡东县、衡南县、常宁市、耒阳市属于重旱区,衡山县为中旱区。选择降水量、水利化程度等8个指标体系,并构建数学模型计算衡阳市7个县域水田系统旱灾脆弱度。水田系统旱灾脆弱度以衡南县最大,为0.627,耒阳市最小,为0.429;衡阳县、衡南县、祁东县、常宁市为高度脆弱区,衡山县、衡东县、耒阳市是低度脆弱区。[结论]综合干旱危险性与水田系统脆弱性来看,衡阳市西部农业旱灾...

[Objective] The prior work of drought risk assessment taken Hengyang City as a typical region in Southern China was conducted to guide the consequent drought-control decision-making. [Methods] The standardized precipitation index was used to assess the drought risk in Hengyang City of Hu＇nan Province in 2013. The mathematical model is built to calculate the drought vulnerability in the city by selecting indicator system. [Results] The drought risk of Hengyang City was sub-zoned as followings： extreme drought subzone includes Hengyang and Qido...