基于农户视角的洪灾社会脆弱度及影响因素——以安康市4个滨河村庄为例

发布时间：2018-04-05 09:29

本文选题：农户视角　切入点：洪灾　出处：《地理科学进展》2017年11期

【摘要】：降低洪灾社会脆弱度是缓解洪灾社会影响,建立洪水韧性的重要途径。本文从敏感性、适应性和暴露度3个方面构建微观尺度下的洪灾社会脆弱度评价指标体系,以安康市4个滨河村庄为例,运用基于熵权的综合指数法评价农户的洪灾社会脆弱度,并通过BP神经网络分析厘清评价指标与社会脆弱度之间的重要性关系,识别出洪灾社会脆弱度的主要影响因素。据此提出相应的对策建议作为降低农户洪灾社会脆弱度的实践依据。研究表明:(1)案例村调研样本中近一半的农户处于高社会脆弱度等级,由此推算,研究区有715个农户具有较高的洪灾社会脆弱度;(2)受访者健康状况、防汛信息渠道、避灾疏散方式、建筑质量、是否有病残人口、家庭收入多样性、5岁以下幼儿比重和60岁以上老年人比重是农户社会脆弱度的主要影响因素;(3)基于农户视角的洪灾社会脆弱度评价能准确地识别出脆弱度较高的农户,其结果在降低洪灾社会脆弱度方面更具有现实意义。
[Abstract]:Reducing the social vulnerability of flood is an important way to alleviate the social impact of flood and build flood resilience.In this paper, the evaluation index system of social vulnerability of flood disaster is constructed from three aspects of sensitivity, adaptability and exposure. Four riverside villages in Ankang City are taken as an example.The comprehensive index method based on entropy weight is used to evaluate the social vulnerability of farmers in flood disaster, and the importance relationship between evaluation index and social vulnerability is clarified by BP neural network analysis, and the main influencing factors of social vulnerability of flood disaster are identified.Accordingly, the corresponding countermeasures and suggestions are put forward as the practical basis for reducing the social vulnerability of farmers'flood disaster.The study shows that nearly half of the rural households in the case study sample are at a high social vulnerability level. From this, it is estimated that there are 715 rural households in the study area with a relatively high social vulnerability to flooding.) the health status of the interviewees and the flood control information channels are calculated.The way to avoid disasters, the quality of the building, whether there is a disabled population,Family income diversity: the proportion of children under 5 years old and the proportion of elderly people over 60 years old are the main influencing factors of social vulnerability of farmers. 3) the evaluation of social vulnerability of flood disaster based on the perspective of farmers can accurately identify the farmers with high vulnerability.The result has more practical significance in reducing the social vulnerability of flood disaster.
【作者单位】：西北大学城市与环境学院;
【基金】：西北大学研究生自主创新项目(YZZ15014) 国家自然科学基金项目(41601174)~~
【分类号】：C912.6;X4

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