Bangladesh is one of the most vulnerable countries exposed to natural disasters. This paper attempts to analyze the vulnerability of coastal areas of the Chittagong District in the southeastern coast of Bangladesh. This study explores the spatial variations of coastal vulnerability of the study area using three physical variables and four social variables with a spatial analytical method. In this regard, a Physical Vulnerability Index (PVI), and a Social Vulnerability Index (SVI) have been prepared for the research area. Finally, a Coastal Vulnerability Index (CVI) was constructed within a geographic information system combining both PVI and CVI. The vulnerability indices reveal that the rural areas are more vulnerable to disaster than the urban areas. According to the PVI, SVI, and CVI about 66%, 48%, and 43% areas are highly vulnerable respectively. Despite of data limitations in constructing the PVI and SVI, this research is the first endeavor to apply a composite CVI based on geospatial techniques in the southeastern coast of Bangladesh. The CVI results illustrate that the coasts are the most vulnerable to flooding, storm surges and cyclones. In this study, CVI is presented as a tool to identify areas of vulnerability in the zones of the coastal district Chittagong. The CVI will serve as a practical guideline for policy makers to introduce policies and plans to mitigate the natural hazard-induced disaster impacts on the coastal Bangladesh.

孟加拉国是最容易遭受自然灾害的国家之一。本文试图分析孟加拉国东南沿海吉大港地区沿海地区的脆弱性。本研究通过空间分析方法，利用三个物理变量和四个社会变量，探索了研究区域沿海脆弱性的空间变化。在这方面，已经为研究领域准备了物理脆弱性指数（PVI）和社会脆弱性指数（SVI）。最后，在结合了PVI和CVI的地理信息系统中构建了沿海脆弱性指数（CVI）。脆弱性指数表明，农村地区比城市地区更容易遭受灾难。根据PVI，SVI和CVI，大约66％，48％，和43％的地区非常脆弱。尽管在构建PVI和SVI方面存在数据限制，但这项研究还是在孟加拉国东南沿海应用基于地理空间技术的复合CVI的首次尝试。CVI结果表明，沿海地区最容易遭受洪水，风暴潮和飓风的袭击。在这项研究中，CVI作为一种工具来识别沿海地区吉大港地区的脆弱区域。CVI将作为政策制定者的实用指南，以制定政策和计划来减轻自然灾害引起的灾害对孟加拉国沿海地区的影响。CVI结果表明，沿海地区最容易遭受洪水，风暴潮和飓风的袭击。在这项研究中，CVI作为一种工具来识别沿海地区吉大港地区的脆弱区域。CVI将作为政策制定者的实用指南，以制定政策和计划来减轻自然灾害引起的灾害对孟加拉国沿海地区的影响。CVI结果表明，沿海地区最容易遭受洪水，风暴潮和飓风的袭击。在这项研究中，CVI作为一种工具来识别沿海地区吉大港地区的脆弱区域。CVI将作为政策制定者的实用指南，以制定政策和计划来减轻自然灾害引起的灾害对孟加拉国沿海地区的影响。