关键词: 东山湾, 油类, 分布特征, 单项指数, Dongshan Bay, oil content , distributed character, single index

Abstract: According to the investigational data of oil content in the surface water of Dongshan Bay from 2009 to 2011, the distributional character and pollution degree of oil of the investigational sea area were studied with single index method. Results showed that the measured values and the average values of oil content were below the standard values of first national seawater quality, and seawater quality all met the national standards. In terms of seasonal oil content, the sequence was autumn > winter summer > spring，but not obvious change by years; in terms of region oil content,the adjacent water of the northern part of Dongshan Island and Tayu and the western part between Gulei Cape and Shanwei was the most serious polluted,but the water between the mid-west part and forepart was the lowest.