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根据2010年2月—2010年3月的调查数据,探讨了冬季渤海海峡及其附近表层海水中溶解无机碳体系的分布特征。结果表明:表层水体中TA、DIC和3HCO的浓度分布总体上呈现出海峡西南部高东北部低的分布趋势。西南部出现的高值区,与该区域靠近莱州湾,受莱州湾水体污染影响有关。调查海域TA与表层水的温度相关性明显,pH与叶绿素的相关性较高。水温和Chl-a浓度是影响水体中无机碳体系分布变化的重要因素。其中,水温对3HCO的影响要明显强于DIC。海峡南北两侧水体交换的差异,是导致海峡南部东西两端无机碳体系各参数监测数值的差异明显大于海峡北部的主要原因。
Based on the survey data from February 2010 to March 2010, the distribution characteristics of dissolved inorganic carbon in surface seawater in Bohai Strait and its vicinity were discussed. The results show that the concentrations of TA, DIC and 3HCO in the surface water show a low distribution trend in the northeast of the Taiwan Strait. The high value areas appearing in the southwest are closely related to the Laizhou Bay area and the Laizhou Bay water pollution. The correlation between TA and surface water temperature was obvious in the survey sea area, and the correlation between pH and chlorophyll was high. Water temperature and Chl-a concentration are important factors affecting the distribution of inorganic carbon in water. Among them, the influence of water temperature on 3HCO is obviously stronger than DIC. The differences in water exchange between the north and south sides of the strait are the main reasons for the significant differences in monitoring values of inorganic carbon between the east and west of the strait in the northern part of the strait.