渤海海峡冬季营养盐的分布特征及影响因素  

Characteristics of vertical distribution and influence factors of the nutrients at Bohai Strait in winter

作　　者：张乃星[1,2] 任荣珠[1,2] 吴凤丛[1,2] 王尽文[1,2] 林森[1,2] 张亮[1,2] 

机构地区：[1]山东省海洋生态环境与防灾减灾重点实验室,山东青岛266033 [2]国家海洋局北海预报中心,山东青岛266033

出　　处：《海洋通报》2011年第6期607-614,共8页Marine Science Bulletin

基　　金：浅海试验场区建设方案设计与运行保障(200905024-2);国家海洋局青年海洋科学基金项目(2010503);国家海洋局北海分局海洋科技立项项目(2010A01);中国科学院海洋生态与环境科学重点实验室基金项目(KLMEES201003)

摘　　要：以2010年2-3月对渤海海峡进行的3个断面的调查资料为依据,分析并讨论了渤海海峡冬季营养盐的分布特征及其影响因素。结果表明:冬季,由于强烈的垂直混合作用,渤海海峡水体中水温、营养盐及叶绿素a(Chl-a)的分布基本呈上下一致的特征。调查海域营养盐的分布基本呈现出近岸高,中部低;西南部高,北部低的特征,这与近岸受陆源影响较大,而西南部的高值和北部的低值则主要受渤、黄海水团交换影响明显有关。Chl-a与水温的分布特征非常相近,对二者做Pearson相关性分析发现,二者具有非常明显的正相关关系(r=0.717,p<0.01,n=110)。对Chl-a与各形态营养盐作相关性分析发现,Chl-a与PO4-P表现出较强的相关性(r=-0.480,p<0.01,n=38),说明海峡水体中浮游植物的吸收是影响PO4-P分布的重要因素。Based on the cruises carded out at Bohai Strait for three transects from February 2010 to March 2010, the distribution features of nutrients at this section and influence factors were discussed. The results showed that： influenced by the effect of vertical mixing, the nutrient temperature and Chlorophyll-a had obviously the same distribution characteristics at different depths. The concentration of nutrients decreased from in shore to offshore by the influence of runoff. The concentration of nutrients showed high value in southwest part and low in north part, which was affected by the exchange of different water mass. There was a significant positive correlation between the distribution of Chl-a and water temperature （r=0.717, p〈0.01, n = 110）. There was also a significant negative correlation between the concentration of Chl-a and PO4-P（r = -0.480, p〈0.01, n = 38）, which showed that the distribution of PO4-P was mainly controlled by the phytoplankton absorbing.

关 键 词：渤海海峡 营养盐 叶绿素 分布特征 影响因素 

分 类 号：P593[天文地球—地球化学]