中文摘要：

珊瑚δ^18Ocarb是海水表面盐度SSS的指示剂，需要采用室内的珊瑚养殖实验给予验证。本文利用新型的串联式室内珊瑚养殖水循环系统和新生长珊瑚骨骼沉积的培植方法，在国内首次进行了不同海水盐度下（30‰～37‰）的珊瑚养殖实验，对养殖珊瑚骨骼沉积δ^18Ocarb，St／Ca和Mg／Ca进行了测定。结果表明，在养殖海水pH和温度基本稳定的条件下，养殖珊瑚δ^18Ocarb与SSS呈现出显著的正相关关系，鹿角珊瑚和滨珊瑚的线性回归曲线分别为：δ^18Ocarb=0．132×SSS-8．93，r=0．91（鹿角珊瑚）和δ^18Ocarb=0．221×SSS-12．8，r=0．77（滨珊瑚），斜率0．132和0．221均低于文献报道值（0．438）。实验结果发现，δ^18Ocarb与海水δ^18Osw呈现出显著的正相关性，其线性回归方程为δ^18Ocarb=0．904×δ^18Osw-3．82，r=0．92（鹿角珊瑚）和δ^18Ocarb=1．48×δ^18Osw-4．20，r=0．76（滨珊瑚），这表明δ^18Ocarb与SSS的这种关系主要归因于养殖海水δ^18Osw随SSS的变化，如果排除δ^18Osw的影响，即δ^18Ocarb-δ^18Osw与SSS几乎无关（鹿角珊瑚r=0．27）或相关性很弱（滨珊瑚r=O．37）。实验结果还表明，养殖珊瑚骨骼沉积的Sr／Ca，Mg／Ca，Ba／Ca，B／Ca和δ^18Ocarb与SSS间未表现出明显的相关性，这可能意味着，在利用珊瑚骨骼沉积Sr／Ca，Mg／Ca，Ba／Ca，B／Ca和δ^18Ocarb进行海洋环境重建研究时，可以不用考虑SSS的干扰影响。

英文摘要：

δ^18Ocarb of coral is the indicator of sea surface salinity, which needs to be tested by coral culture experiments in laboratory. In this paper, the new tandem aquarium system for coral culture and cultivation method of newly grown coral skeleton were used to carry out coral culture experiments at different salinities （30‰- 37‰） in laboratory for the first time, and then δ^18Ocarb, Sr/Ca and Mg/Ca of cultured coral skeleton were determined. The results show that in the condition of pH and temperature remaining basically stable, the δ^18Ocarb of cultured coral and the SSS present a significantly positive correlation, the linear regression curves of Acropora sp coral and Porites coral are δ^18Ocarb=-0. 132 × SSS - 8.93, r = 0.91 （Acropora sp coral） and δ^18Ocarb = 0. 221 × SSS - 12.8, r = 0.77 （ Porites coral） respectively, the slopes are 0. 132 and 0. 221, both of them are lower than reported value （0. 438） from literature. From the experimental results, the δ^18Ocarb and δ^18Osw present a significant positive correlation, the linear regression curves of them are δ^18Ocarb= 0. 904 ×δ^18Osw- 3.82, r = 0.92 （Acropora sp coral） and δ^18Ocarb = 1. 48× δ^18Osw-4. 20, r = 0. 76 （Porites coral）, which indicate that the relationship between δ^18Ocarb and SSS mainly due to the change of δ^18Osw with SSS, if ruling out the effects of δ^18Ocarb, δ^18Ocarb- δ^18Osw will have nothing to do with SSS （Acropora sp coral, r =0.27） or the correlation is very weak （Porites coral, r = 0. 37）. The results also show that the Sr/Ca, Mg/Ca, Ba/Ca, B/Ca and δ^18Ocarb of cultured coral skeletons have no obvious correlations with SSS, which may mean when we use the Sr/Ca, Mg/Ca, Ba/Ca, B/Ca and δ^18Ocarb of cultured coral skeleton to study the environment reconstruction, we can need not consider the effects of SSS.