陆地生态系统碳·氮·水耦合机制研究进展

在大气CO2浓度升高和氮沉降增加等全球变化背景下,陆地生态系统碳、氮循环相互作用及功能耦合规律的研究是揭示这些不确定性的基础,也能反映森林生态系统生物产量与养分之间的作用规律,涉及到林地持久生产力的生态学机理问题。生态系统的碳循环和水循环以气孔行为为结点,耦联成有机的整体。因此,着重在生态系统尺度上,综述了碳、氮、水循环耦合作用研究的一些进展与存在的问题,并对今后研究方向进行了展望。

Research Advances in the Coupling of Interactive Functions between Carbon, Nitrogen and Water Cycles in Terrestrial Ecosystems

With the increasing CO2 concentration in the atmosphere and the global increase in nitrogen deposition,research on the interactions and coupling of carbon and nitrogen cycling in terrestrial ecosystems exposes these uncertainties,and also reveals the relationships between the productivity and nutrient cycling in forest ecosystems and involves the mechanisms for sustaining the long-term site productivity.The nitrogen,carbon and water cycles were integrated into an organic whole,and their research advances were described and the existing shortcomings and limitations of research in this area were reviewed,and finally the directions for future research in this area were also discussed.