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根据2011年5月~2013年11月莱州湾海域表层海水中石油类污染状况进行的现场调查,研究分析了莱州湾表层海水中石油类的平面分布和季节变化特征。结果表明,2011~2013年,莱州湾表层海水中石油类的浓度变化范围分别为0.009~0.101 mg/L、0.00875~0.0879 mg/L和0.0118~0.0687 mg/L,石油类含量总体年际变化不大,但2011年与2012年、2013年呈现不同的季节变化,2011年夏季(8月)高于春季(5月),而2012年~2013年表现为春季>夏季>秋季(5月>8月>10月>11月)。从石油类的平面分布来看,基本呈现近岸高、湾中部及湾口低的特点,高值区主要集中在小清河口和黄河口等河口附近海域。
According to the field investigation on the oil pollution in the surface seawater of Laizhou Bay from May 2011 to November 2013, the plane distribution and seasonal variation characteristics of petroleum in the surface seawater of Laizhou Bay were studied. The results showed that the concentrations of petroleum in the surface seawater of Laizhou Bay ranged from 0.009 to 0.101 mg / L, from 0.00875 to 0.0879 mg / L and from 0.0118 to 0.0687 mg / L, respectively, from 2011 to 2013. The interannual variation of oil content was not significant However, there were different seasonal changes in 2011, 2012 and 2013. The summer of 2011 (August) was higher than that of spring (May), while the year of 2012-2013 was spring> summer> autumn (May> August) > October> November). From the perspective of the planar distribution of petroleum, the characteristics of high-nearshore coast, low bay mid-bay and low bay are mainly shown in the high-value areas mainly in the waters around the estuary such as Xiaoqing and Huanghekou.