| 摘要: |
| 根据2010 年4 月在东海北部近岸的调查, 分析了研究海域溶解无机碳(DIC)和溶解有机碳(DOC)的含量及其分布状况, 并分别对DIC、DOC 与温度、盐度、表观耗氧量等要素的关系进行了初步探讨。结果表明, 春季研究海域表、底层DIC 平均含量分别为24.54 mg/L 和25.03 mg/L, 平面分布趋势均为近岸高于远岸, 象山口附近DIC 的浓度最高, 北部由于受长江径流的影响, DIC 的浓度也较高。垂直分布特点为底层浓度高于表层。DOC 的表、底层含量分别为0.96 mg/L 和0.87 mg/L, 平面分布特点与DIC 类似, 表现为近岸浓度高, 远岸浓度低。DOC 的垂直分布特点与DIC 正好相反, 表现为表层浓度高于底层。研究海域DIC 与温度、盐度和表观耗氧量的关系表明, DIC 主要受陆源输入和温度的影响,且温度的影响作用较大。研究海域DOC 与温度、盐度和表观耗氧量的关系表明, DOC 受陆源输入的影响更大, 同时受一定的生物活动的影响。 |
| 关键词: 溶解无机碳(DIC) 溶解有机碳(DOC) 东海北部近岸 |
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| 基金项目:国家自然科学基金项目(41076065); 国家重点基础研究发展计划资助项目(2010CB428701) |
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| Dissolved inorganic and organic carbon in the North of East China Sea (ECS) coastal waters in spring |
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| Abstract: |
| Concentrations and distributions of dissolved inorganic carbon (DIC) and organic carbon (DOC) as well as their relationships with temperature, salinity, and dissolved oxygen in the North of ECS Coastal Waters during April in 2010 were analyzed. The average concentrations of DIC in surface and bottom water of our study area were 24.54mg/L and 25.03mg/L, respectively. The average concentrations of DOC in surface and bottom water of our study area were 0.96mg/L and 0.87mg/L, respectively. The characteristics of distributions of DIC and DOC were both higher near the coastal line and lower in outer sea. There were high concentrations at northeast of the survey area because of inputs by Changjiang River. As to vertical distribution, the concentration of DIC in surface water was lower than that in bottom water, while the vertical distribution of DOC was contrary to that of DIC. Relationships between DIC and DOC, and their relationships with temperature, salinity, and AOU indicated that temperature was the main factor influencing DIC distribution, while terrestrial input and biological activities played important parts in distribution of DOC. |
| Key words: dissolved inorganic carbon, dissolved organic carbon, North of East China Sea |
