Welcome to Chinese Journal of Ecology! Today is Share:

cje ›› 2005, Vol. ›› Issue (1): 37-42.

Previous Articles     Next Articles

Advances in the study of terrestrial ecosystem carbon source,sink and affection mechanisms

LI Yuqiang1, ZHAO Halin1, CHEN Yinping 2   

  1. 1. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;
    2. School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
  • Received:2004-04-28 Revised:2004-08-25 Online:2005-01-10

Abstract: It is found that there is a large missing carbon sink between available carbon source and sink by studies of global carbon cycle.Atmosphere,ocean and terrestrial ecosystem are three probable reservoirs of carbon dioxide released by human activities.Terrestrial ecosystem carbon source and sink is one of the critical problems in global carbon cycle because of its complexity and uncertainty.Many studies,including the monitoring of atmospheric components,analysis of forest inventories,CO2 flux measurements and modeling simulations,have suggested that CO2 fertilization,increased nitrogen deposition,pollution,global climatic change and change in land use are major ecological mechanisms affecting the amount of carbon in terrestrial ecosystem.It is unclear which of these mechanisms has been the most important in the past 10~100 years and which will be the most important in the future.

Key words: Apis cerana cerana Fab., Honeybee queen, Drone, Copulation, Oviposition

CLC Number: