全球碳循环研究中“碳失汇”研究进展

Advances of the Research on Missing Sink in Global Carbon Cycling

全球碳循环是全球生物地球化学的主要研究方向之一 ,目前其重点集中在“碳失汇”(missingsink)问题的研究上 .最近的研究表明 ,“碳失汇”产生的主要原因是北方陆地森林生态系统对碳的固定、海洋对碳的吸收、岩石圈中CaCO3 H2 O CO2 系统 (岩溶动力系统 )对碳的吸收 ,以及陆地上碳库的转移 .寻找“碳失汇”的技术手段为现代地理信息系统与遥感技术和全球统一的野外定点监测相结合 ,加以模型研究 .

The global carbon cycling is one of the core projects of global biogeochemistry. It is concentrated on the missing sink. Because of the complexity of carbon cycles in ecosystems and the limitation of methodology, there are many difficulties with confirming the existence of missing sink, or determining the location or causes of missing sink. Recently, it has been found that the most part of missing sink lies in the carbon-fixing by boreal terrestrial forest, the absorption by ocean, and the carbon sink in carbonate rock area, as well as the transportation of carbon pool from terrestrial ecosystem to oceans. The approaches for future research on missing sink are integration of the geographic information techniques and field measurement, with the aid of modeling.