长江口及杭州湾邻近海域夏季表层海水中的溶解无机碳

根据2004年8月在长江口、杭州湾附近海域获得的调查资料对表层水中Ph值、总碱度和溶解无机碳的分布特征及其与环境参数的关系进行了研究,并由此得到了溶解无机碳的组成情况.结果表明,HCO3-、CO23-;和CO2(T)占溶解无机碳浓度百分比分别为80.33%～97.75%、0.61%～19.42%和0.25%～2.34%,平均值分别为(93.28±3.68)%、(5.58±4.03)%和(1.14±0.43)%.水文、浮游植物等对各参数的分布具有重要影响,但对不同参数的影响程度不同.

Dissolved inorganic carbon in surface waters around the Changjiang Estuary and Hangzhou Bay in summer

Based on the data collected from the area around the Changjiang Estuary and Hangzhou Bay during the field observation carried out on August 2004, concentration, distribution and composition of dissolved inorganic carbon and two related parameters, namely pH and total alkalinity, in their surface waters were examined in this paper. On the whole, the concentration distributions of DIC, HCO^-₃ and CO_2(T)decreased latitudinally from west to east, while those of pH and CO^2-₃ were reverse. HCO^-₃ accounted for 80.33 % to 97.75% of the DIC with an average of (93.28 ±3.68)%; CO^2-₃ accounted for 0.61% to 19.42% of the DIC with an average of (5.58±4.03)%; CO_2(T) accounted for 0.25% to 2.34% of the DIC with an average of (1.14±0.43)%. The integration of many factors including the interaction among different water masses, phytoplankton activities and so on influenced on the spatial distribution characteristics of these parameters, while the degree of influence on these parameters varied greatly from one to another for a certain influence factor.