海南优势海草营养元素的含量及其影响因素研究

华东师范大学学报(自然科学版) ›› 2012, Vol. 2012 ›› Issue (4): 131-141.

海南优势海草营养元素的含量及其影响因素研究

蔚枝沁¹，邓泓^1-3，吴可为¹，杜璟¹，马敏¹

1.华东师范大学环境科学系，上海 200062；
2.华东师范大学上海市城市化生态过程与生态恢复重点实验室,上海 200062；
3.华东师范大学天童森林生态系统国家野外科学观测研究站，上海 200062

收稿日期:2011-04-01 修回日期:2011-07-01 出版日期:2012-07-25 发布日期:2014-12-15

Nutrient contents of dominant seagrass species and their affecting factors in Hainan Province

YU Zhi-qin ¹, DENG Hong ^1-3, WU Ke-wei ¹， DU Jing ¹， MA Min ¹

1. Department of Environment Science, East China Normal University, Shanghai 200062, China;2. Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, East China Normal University, Shanghai 200062, China; 3. Tiantong National Station of Forest Ecosystem, Chinese National Ecosystem Observation and Research Network, East China Normal University, Shanghai 200062, China

Received:2011-04-01 Revised:2011-07-01 Online:2012-07-25 Published:2014-12-15

摘要/Abstract

摘要： 研究了海南新村港、黎安港、文昌和琼海（潭门）等地的优势海草种类海菖蒲(〖WTBX〗Enhalus acoroides〖WTBZ〗)、海神草(〖WTBX〗Cymodocea rotundata〖WTBZ〗)及泰来藻(〖WTBX〗Thalassia hemperichil〖WTBZ〗)中氮、磷及铁的含量和影响因素.研究结果表明，海南潮间带海草对养分的吸收与海水营养水平及沉积物氮、磷、有机碳、铁有关.相对于氮，海草叶片磷含量受海水和沉积物的影响更明显.海水磷、沉积物有机碳和铁均能促进海草组织对磷的吸收.海草叶片的氮磷比为新村港（21.73）>黎安（14.25）>文昌（9.53）≈潭门（10.29），与海水中溶解性总氮和溶解性无机磷的比值呈线性正相关，说明海水的富营养化影响了海草叶片的氮磷平衡.

关键词: 海草, 氮磷比, 铁, 富营养化

Abstract: Nutrient (N, P and Fe) contents of 〖WTBX〗Enhalus acoroides, Cymodocea rotundata〖WTBZ〗 and 〖WTBX〗Thalassia hemperichi〖WTBZ〗 dominated in the seagrass beds in Hainan were studied in this paper. The results indicated that nutrient uptake by inter-tidal seagrass was influenced by both N, P in seawater and chemical characteristics of sediments (N, P, TOC and Fe). Phosphorus concentration of seagrass, which was more sensitive to water and sediment than that of nitrogen, was positively correlated with the level of P in seawater and TOC and total Fe in sediment. Enhanced nutrient level induced by human activates has exerted imbalance of N and P uptake in seagrass, with the leaf N:P of Xincungang （21.73）>Li′an （14.25）> Wenchang （9.53）≈ Tanmen （10.29）. The fact that leaf N:P had strong correlation with DTN:DIP in seawater has indicated the influence of eutrophication on the imbalance of nutrient uptake in seagrass.

Key words: seagrass, ratio of nitrogen to phosphorus, iron, eutrophication

中图分类号:

Q948

蔚枝沁，邓泓，吴可为，杜璟，马敏. 海南优势海草营养元素的含量及其影响因素研究[J]. 华东师范大学学报(自然科学版), 2012, 2012(4): 131-141.

YU Zhi-qin, DENG Hong, WU Ke-wei， DU Jing， MA Min. Nutrient contents of dominant seagrass species and their affecting factors in Hainan Province[J]. Journal of East China Normal University(Natural Sc, 2012, 2012(4): 131-141.

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