黄、东海二甲基硫与环境因子的多元分析及建模

基于已发表的2005~2015年的文献数据，讨论了黄、东海表层二甲基硫（DMS）和叶绿素a （Chl-a）浓度的时空变化.结果表明：夏季DMS和Chl-a浓度高于冬季；由南至北，年均DMS和Chl-a浓度逐渐升高，且四季间的差异变大.黄、东海表层海水DMS和Chl-a、温度的统计分析表明，春、夏季Chl-a和DMS浓度存在指数关系，而冬季Chl-a和DMS浓度则存在线性关系；不同Chl-a水平下，温度对DMS浓度的影响存在差异.黄、东海表层DMS浓度与Chl-a浓度及温度的多元统计模型结果显示：DMS浓度随着Chl-a浓度增加而增加；在中心温度为21.31℃的温度区间内，DMS浓度较高，且Chl-a浓度越高，这个温度区间越窄.

Multivariate analysis between dimethylsulfide and environmental factors and modeling in the Yellow Sea and the East China Sea

Based on the published data during 2005 to 2015, the spatial and temporal variation of sea surface DMS and chlorophyll a (Chl-a) was discussed in the Yellow Sea and the East China Sea. DMS and Chl-a concentration in summer were higher than those during winter, and annual concentration of DMS and Chl-a rose from south to north, and the seasonal variation of DMS and Chl-a concentration got bigger with an increase of latitude. Statistical analysis showed that Chl-a had an exponential relation with DMS concentration during spring and summer, while there was a linear relationship during winter. And under conditions of different Chl-a concentration levels, the impact of temperature on DMS concentration were different. A multivariate statistical model was established in this work, in which the sea surface temperature and the surface Chl-a concentration was used to estimate the surface DMS concentration. The DMS concentration rose with the increase of the Chl-a concentration. The DMS concentration was relatively high within a range of temperature with the central temperature of 21.31℃, and the higher the Chl-a concentration was, the narrower the range of temperature could be.