Water Resource Vulnerability Characteristics by District's Population Size in a Changing Climate Using Subjective and Objective Weights

摘要: The goal of this study is to derive water resource vulnerability characteristics for South Korea according individual district populations in a changing climate. definition consists potential flood damage and scarcity. To quantify these vulnerabilities, key factors, or indicators affecting vulnerability, are integrated with technique order preference by similarity ideal solution (TOPSIS), which multi-criteria decision-making approach determine the optimal alternative considering both best worst solutions. weight each indicator determined based on Delphi Shannon’s entropy, employed reduce uncertainty process determining weights. reflects expert opinions, entropy performance data. Under A1B climate change scenarios, medium-sized districts (200,000–300,000 inhabitants) most vulnerable regarding damage; largest (exceeding 500,000 found be respect This result indicates that local governments cities more than 200,000 inhabitants should implement better preventative measures resources. In addition, methods show same rankings vulnerability; however, approaches produce slightly different scarcity vulnerability. Therefore, it suggested from not only subjective but also objective weights considered making final decision specific adaptive change.