中文摘要：

以湖南省洞庭湖区为研究区域，20个县市区为基本研究单元，筛选出能直接反映农户生产生活状况的6个因素作为计算指标，并考虑不同洪涝风险程度对各区域的影响差异，就农户的脆弱性进行了定量评价。结果表明，一半左右区域的农户在洪涝灾害面前表现出较高的脆弱性，说明洞庭湖区洪涝灾害严重。同时，农户脆弱性存在着明显的空间差异，南洞庭与西洞庭的农户要高于东洞庭；分布在南洞庭湖区和四水尾间县市区的农户要高于沿湖经济较为发达的中心城市郊区农户。由此可见，洪涝灾害问题不仅是一个自然和生态问题，它更是一个社会和经济问题。

英文摘要：

This paper takes Dongting Lake area and its 20 counties as study area and basic study units. Six indices reflecting the economic activities of local farmers were selected and the impacts of different flood risk level on the counties were taken into account. Then the vulnerability of peasant households was computed. The analysis results show that there are 50% of counties among flood risks areas have a high degree of vulnerability to flood. At the same time, there are clear space differences. The vulnerability of the peasant households in the south and west Dongting counties to flood was higher than that of peasant household in the East Dongting counties ; the vulnerability of the peasant households in the verge of south counties and four water counties to flood was higher than that of peasant household in the more economically developed city＇ s suburbs. This shows that the flood problem is not only a natural and ecological problem, but also a social and economic problem.