张璐璐¹, 韩秋影², 史云峰², 赵牧秋²
1.天津农学院, 天津 300384;2.海南热带海洋学院, 海南 三亚 572022

摘要:
营养盐和盐度对海草的生长和生理都具有重要影响，但二者对海草的协同作用还未见报道。本研究以日本鳗草（Zostera japonica）为对象，在室内可控条件下进行营养盐和盐度对日本鳗草的协同影响研究。实验结果显示，营养盐和盐度对日本鳗草地上生物量、地上部分C含量、地下部分C含量均有显著的协同影响。日本鳗草组织中的营养盐含量（N_t）与盐度有显著相关性，但并未受到营养盐和盐度的协同影响。营养盐和盐度会协同影响海草的固碳能力，并同时影响其对硝酸盐的吸收。
关键词:营养盐盐度日本鳗草协同影响海草
DOI：10.11759/hykx20180613002
分类号:
基金项目:国家自然科学基金项目（41730529；41576117；41766004）；海南热带海洋学院2017年度科研项目（RHDXB201710）；海南省自然科学基金面上项目（418MS074）；2018年度海南省科协青年科技英才创新计划项目（QCXM201811）

Synergistic effects of eutrophication and salinity on biomass and carbon and nitrogen contents of Zostera japonica
ZHANG Lu-lu¹, HAN Qiu-ying², SHI Yun-feng², ZHAO Mu-qiu²
1.Tianjin Agriculture University, Tianjin 300384, China;2.Hainan Tropical Ocean University, Sanya 572022, China
Abstract:
Nutrients and salinity have important effects on the growth and physiology of seagrasses; however, their synergistic effects on seagrasses have not yet been reported. This study investigated the synergistic effects of nutrients and salinity on Zostera japonica in a mesocosm. Results showed that nutrients and salinity had synergistic effects on biomass and C content of aboveground and underground parts of Z. japonica. The N content of Z. japonica significantly correlated with salinity; however, it was not affected by the synergistic effects of nutrients and salinity. Nutrients and salinity have an impact on the carbon fixation ability and nitrate absorption of seagrasses.
Key words:nutrientssalinityZostera japonicasynergistic effectsseagrasses





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