有机生物地球化学与晚新生代古全球变化研究

有机生物地球化学在古全球变化研究中的应用越来越受到重视。在古海洋学领域,表层海水温度、海洋初级生产力的大小及其种群结构的变化对全球碳循环的影响、海底甲烷释放等关键性科学问题都需要有机生物地球化学积极参与。有机生物地球化学也能在陆地古生态系统中植被的演变、C3与C4植物的消长变化、湖泊水体环境的变化等方面作出独特的贡献。文中简要评述了上述内容的研究现状。

Organic biogeochemistry and past global change

Organic biogeochemistry is regarded more and more as an important method in the study of past global change. In paleoceanography, it plays an important role in determining the temperature of the paleo-sea surface, providing an understanding of the relationship between the primary paleoproduction and the carbon cycle, and testing the hypothesis of submarine methane release. It also contributes to the terrestrial paleoecological and paleoenvironmental issues, such as vegetational evolution, changes in C3 to C4 plants and paleolimnologic variations. This article gives a general review on the status of knowledge on these aspects.