今生颗石藻的有机碳泵和碳酸盐反向泵

Organic Carbon Pump and Carbonate Counter Pump of Living Coccolithophorid

海洋今生颗石藻同时具有有机碳生产和钙化作用两个过程,对海洋碳的生物地球化学循环具有重要作用。今生颗石藻通过有机碳泵(生物泵)和碳酸盐反向泵调节大气p(CO2),最终影响全球的气候变化。介绍了今生颗石藻对全球气候变化的影响,重点讨论其碳酸盐反向泵过程,从今生颗石藻碳酸盐反向泵的生理学基础、钙化作用与光合作用的耦合机制、全球气候变化下今生颗石藻的有机碳泵和碳酸盐反向泵耦合机制改变等几个方面进行了描述。对中国近海今生颗石藻的研究进行了展望。

The intrinsic coupling of organic matter production and calcification in marine living coccolithophorid （LC） blooms underlines their biogeochemical importance in the marine carbon cycle. This intimate coupling of the two pumps, ＂organic carbon pump （OCP）＂ and ＂carbonate counter pump （CCP）＂ in LC, has been considered to be responsible for regulating the atmospheric p （ CO2 ）, thus affect the global climate change （GCC）. The effects of CCP on GCC have been reported, especially on CCP processes. It include physiological base of CCP, coupling mechanism of calcification and photosynthesis, and its changes under GCC. Progress and prospect of LC study in China Sea Waters were reported. The South China Sea （SCS） tentatively be chosen as typical study area, three objects was selected ： （ 1 ） biogeography of LC in SCS ; （2） physiological- ecological study of keystone species Emiliania huxleyi and Gephyrocapsa oceanica on CCP and OCP processes; （3） Increased CO2, temperature and light conditions affect the nature phytoplankton community development in SCS; （4） Ecological modeling study coupling of CCP and OCP.