CAJ | 학술논문

根据2004~2009年丰水期对长江口及邻近海域的调查监测资料,研究了沉积物中石油烃的时空分布特征及污染情况,分析了其影响机理.结果表明,石油烃平均含量为176.25mg/kg,沉积物无石油烃污染；沉积物中石油烃空间分布格局整体上呈由近岸向远岸递减的趋势,陆源输送、水动力条件、细颗粒物质的吸附以及絮凝作用是控制石油烃分布的主要因素；调查海域空间分布尺度上可以划分为4个海域,MDS排序分析以及 ANOSIM 检验均支持了划分结果；沉积物中石油烃含量为近岸最大浑浊带最高,其次为近岸区和泥质区,在远岸区则常年存在一个石油烃含量的低值区.
근거2004~2009년봉수기대장강구급린근해역적조사감측자료,연구료침적물중석유경적시공분포특정급오염정황,분석료기영향궤리.결과표명,석유경평균함량위176.25mg/kg,침적물무석유경오염；침적물중석유경공간분포격국정체상정유근안향원안체감적추세,륙원수송、수동력조건、세과립물질적흡부이급서응작용시공제석유경분포적주요인소；조사해역공간분포척도상가이화분위4개해역,MDS배서분석이급 ANOSIM 검험균지지료화분결과；침적물중석유경함량위근안최대혼탁대최고,기차위근안구화니질구,재원안구칙상년존재일개석유경함량적저치구.
In order to investigate the characteristics of the distribution and pollution level of the petroleum hydrocarbon in surface sediments. Based on data obtained from the Changjiang Estuary and its adjacent areas in the rainy season from year 2004to 2009, the distribution characteristics and pollution level of the petroleum hydrocarbon in surface sediments analyzed, and their influencing mechanisms was further analyzed. The average content of the petroleum hydrocarbon was 176.25mg/kg and there was almost no pollution in the investigation area. The distribution pattern of the petroleum hydrocarbon was decreased from the alongshore to the open sea and hydrographic dynamics, adsorption and flocculation played important roles in the distribution of the petroleum. According to the spatial analysis results, the petroleum hydrocarbon in surface sediments was classified into four areas and the results were supported by multidimensional analysis and ANOSIM test. The investigation area could classify into inshore turbidity maximum areas, inshore areas, muddy areas, and there was a perennial low value area in the offshore area located in the southeast.