渤海中部断面环境要素分布及其变化趋势  

Distribution and Variation Trends of the Environmental Factors in the Central Section of the Bohai Sea

作　　者：俎婷婷[1] 鲍献文[1] 谢骏[1] 吴德星[1] 

机构地区：[1]中国海洋大学海洋环境学院,山东青岛266003

出　　处：《中国海洋大学学报（自然科学版）》2005年第6期889-894,1016,共7页Periodical of Ocean University of China

基　　金：国家高技术研究发展计划(2002AA648010);教育部新世纪优秀人才计划资助

摘　　要：研究渤海的可持续发展.根据 1979～1999 年渤海中部断面温度、盐度、溶解氧、营养盐的调查资料,分析了它们的分布结构和20年来的变化趋势.结果显示断面各个要素冬季的垂向分布均匀,夏季有2个冷水中心,盐度、溶解氧、营养盐在冷中心位置也出现了类似的高值或者低值中心.各要素的距平图显示盐度有上升趋势,溶解氧含量下降,无机氮逐年增加,磷酸盐和硅酸盐夏季有下降的趋势,但是冬季没有明显的增加或者减少的趋势.Based on the survey data from 1979 to 1999 in the central section of the Bohai Sea, this paper analyses the distribution of temperature, salinity, dissolved oxygen and nutrients as well as their variation trends duringthese 20 years. The results show that all factors in the section are vertically uniform in winter, while in summer there are two cold-water centers, and there are also similar high or low centers of salinity, dissolved oxygen, and nutrients in the cold centers. The anomaly pictures of the factors reveal positive trendsof temperature, salinity and inorganic nitrogen. But phosphate and silicate decrease in summer, although they do not show obvious positive or negative trends in winter.

关 键 词：温度 盐度 营养盐 长期变化 渤海 

分 类 号：X145[环境科学与工程—环境科学]