冬季海南省东北部河流及近岸海区有机碳的分布特征

doi:10.11978/j.issn.1009-5470.2010.05.136

热带海洋学报 ›› 2010, Vol. 29 ›› Issue (5): 136-141.doi: 10.11978/j.issn.1009-5470.2010.05.136cstr: 32234.14.j.issn.1009-5470.2010.05.136

冬季海南省东北部河流及近岸海区有机碳的分布特征

田丽欣, 吴莹, 林晶, 朱卓毅, 张经

华东师范大学河口海岸学国家重点实验室, 上海 200062

收稿日期:2008-09-24 修回日期:2008-11-06 出版日期:2010-10-30 发布日期:2011-10-10
通讯作者: 吴莹。
作者简介:田丽欣(1982—), 女, 河北省石家庄人, 在读硕士研究生, 从事海洋有机地球化学研究, E-mail: tianlixin_5799376@126.com
基金资助:
科技部中德合作项目(2007DFB20380); 国家自然科学基金项目(40721004, 40475037)

Distribution and composition of organic carbon in the northeastern Hainan rivers and coasts during winter

TIAN Li-xin, WU Ying, LIN Jing, ZHU Zhuo-yi, ZHANG Jing

华东师范大学河口海岸学国家重点实验室, 上海 200062

Received:2008-09-24 Revised:2008-11-06 Online:2010-10-30 Published:2011-10-10
Contact: 吴莹。
About author:田丽欣(1982—), 女, 河北省石家庄人, 在读硕士研究生, 从事海洋有机地球化学研究, E-mail: tianlixin_5799376@126.com
Supported by:
科技部中德合作项目(2007DFB20380); 国家自然科学基金项目(40721004, 40475037)

摘要/Abstract

摘要：

2006年12月在海南省东北部河流万泉河和文昌河以及周边的红树林和珊瑚礁体系采集水样, 测定其溶解有机碳(DOC)和颗粒有机碳(POC)的含量。结果表明, 万泉河水体中DOC和POC的平均浓度分别为139.3和39.7μmol•L?1; 文昌河水体中DOC和POC的平均浓度则为133.0和47.4μmol•L?1, 其周边红树林水体DOC和POC的平均浓度分别为214.1和27.9μmol•L?1; 珊瑚礁周边水体DOC和POC的平均浓度分别为66.3和22.4μmol•L?1。文昌河周边的养殖活动及红树林水体对该河流中的高DOC和POC可能有显著贡献, 且文昌河POC%与TSM浓度均呈显著负相关(R2=0.71, n=9)。万泉河、文昌河和珊瑚礁周边水体POC/Chl a的比值分别介于72—312、43—196、122.5—334。估算浮游植物对万泉河、文昌河和珊瑚礁周边水体POC的贡献量分别为34%、45%、38%。

关键词: 海南, 河流, 溶解有机碳, 颗粒有机碳, 分布

Abstract:

Water samples collected in the northeastern Hainan rivers and coasts in December 2006 were used to determine concentrations of dissolved organic carbon (DOC) and particulate organic carbon (POC). During the observation period, the concentrations of DOC and POC in the Wanquan River were 139.3 and 39.7μmol•L?1, respectively, and were 133.0 and 47.4μmol•L?1, respectively in the Wenchang River. The DOC and POC concentrations in the adjacent mangrove waters were 214.1 and 27.9μmol•L?1, respectively, and in adjacent coral reef waters were 66.3 and 22.4μmol•L?1, respectively. Aquacultural activities and mangrove system near the Wenchang River could be the major sources for higher DOC observed in the river. There is an inverse relationship between the concentrations of total suspended matter (TSM) and POC% in the Wenchang River (R2=0.71, n=9). The ratio of POC/Chl a was 72—312 in the Wanquan River, 43—196 in the Wenchang River, and 122.5—334 in the adjacent coral reef waters. The contribution of phytoplankton to POC, estimated by a simple model, was 34% in the Wanquan River, 45% in the Wenchang River, and 38% in the adjacent coral reef waters.

Key words: Hainan, river, dissolved organic carbon, particulate organic carbon, distribution

田丽欣,吴莹,林晶,朱卓毅,张经. 冬季海南省东北部河流及近岸海区有机碳的分布特征[J]. 热带海洋学报, 2010, 29(5): 136-141.

TIAN Li-xin,WU Ying,LIN Jing,ZHU Zhuo-yi,ZHANG Jing. Distribution and composition of organic carbon in the northeastern Hainan rivers and coasts during winter[J]. Journal of Tropical Oceanography, 2010, 29(5): 136-141.

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冬季海南省东北部河流及近岸海区有机碳的分布特征

Distribution and composition of organic carbon in the northeastern Hainan rivers and coasts during winter

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