受全球气候变化影响,海水入侵已成为海岛地区普遍面临的地质灾害,严重制约海岛的开发与利用。本文以北长山岛为例,通过对不同含水层野外现场取样分析与高密度电法测试,探讨该地区海水入侵的成因机制与主要影响因素,并结合前人研究成果对该地区海水入侵现状进行评估。研究成果可为防治海水入侵灾害以及北长山岛地下水资源开发和管理提供科学依据。 Affected by the global climate change, seawater intrusion has become a common geological disaster in island areas and severely restricts the development and utilization of the island. This paper takes Beichangshan Island as an example. Through the field sampling and high density electric tests in different aquifers, the paper explores the genetic mechanism and main influencing factors of seawater intrusion in the area. Based on the previous research results, to evaluate. The research results can provide a scientific basis for the prevention and control of seawater intrusion hazards and the exploitation and management of groundwater resources in the northern Changshan Island.