| 摘要: |
| 依据2009年2、4、6、8、10、12月水体生源要素调查资料，对胶州湾湿地水体中总氮和总磷的分布及变化特征进行了分析研究。结果表明，1）胶州湾湿地——大沽河感潮河段沿河道自上而下水体中总氮(TN)和总磷(TP)含量大致呈降低趋势；潮间带区域TN和TP高含量区基本位于大沽河入海口及其邻近海域，其含量和分布主要由大沽河入海径流所控制。2）胶州湾湿地水体中TN和TP的月际变化明显，其中大沽河感潮河段TN以12月最高，2月次之，8月最低；TP以2月最高，12月次之，4月最低。潮间带区域TN 2～8月呈降低趋势，8～12月呈增高趋势；TP以2月最高，其他月份含量较低且变化不明显。3）胶州湾湿地海水中TN、TP等生源要素主要来自大沽河入海径流，大沽河径流入海对胶州湾湿地海水中生源要素的含量水平和分布趋势产生了显著影响。 |
| 关键词: 胶州湾湿地 总氮和总磷 分布及变化特征 |
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| 基金项目:国家海洋公益性行业科研专项(200805066)和国家科技支撑计划课题(2009BADB7B02)共同资助 |
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| Characteristics of distribution and variation of total nitrogen and phosphorous in seawater of the Jiaozhou Bay wetland |
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| Abstract: |
| Based on the nutritional elements data of water surveyed in February，April，June，August，October and December，2009，the distribution and variation of total nitrogen(TN) and total phosphorous(TP) in seawater of the Jiaozhou Bay wetland were studied.The results showed that：（1）In the tidal range of the Dagu River，the content of TN and TP in water roughly decreased from upper stream to lower stream along the river course．In the inter-tidal area of the Jiaozhou Bay wetland，the regions with higher contents of DIN and DIP were basically located at the estuary of Dagu River and the area adjacent to it，and their contents and distribution were mainly controlled by runoff amount of Dagu River entering the sea．（2）There were apparent seasonal variations of TN and TP contents in the water of Jiaozhou Bay wetland．In the tidal range of the Dagu River，the mean content of TN was the highest in December，higher in February and the lowest in August.The mean content of TP was the highest in February，higher in December and the lowest in April．In the inter-tidal area of the Jiaozhou Bay wetland，the mean TN content decreased from February to August and increased from August to December，and the mean content of TP was the highest in February and lower with insignificant variation in other surveyed months．（3）The nutritional elements in seawater such as TN and TP in the Jiaozhou Bay wetland was mainly derived from the runoff of Dagu River entering the sea． |
| Key words: Jiaozhou Bay wetland Total nitrogen and total phosphorous Characteristics of distribution and variation |
