地理科学进展 ›› 2000, Vol. 19 ›› Issue (4): 297-306.doi: 10.11820/dlkxjz.2000.04.002

• 论文 • 上一篇    下一篇

陆地碳循环研究进展

耿元波, 董云社, 孟维奇   

  1. 中国科学院地理科学与资源研究所, 北京100101
  • 收稿日期:2000-10-01 修回日期:2000-11-01 出版日期:2000-12-25 发布日期:2000-12-25
  • 作者简介:耿元波(1969-),男,中科院地理科学与资源研究所博士生,研究方向为环境生物地球化学。E-mail:gyb0741@sina.com
  • 基金资助:

    国家自然科学基金资助项目(49971005);中科院地理科学与资源研究所知识创新工程前沿项目(CXIOG-A00-A06);“九五”国家

Progresses of Terrestrial Carbon Cycle Studies

Geng Yuan bo, Dong Yun she, Meng Wei qi   

  1. Institute of Geographical Sciences and Natural Resources Research, CAS, Beijing 100101, China
  • Received:2000-10-01 Revised:2000-11-01 Online:2000-12-25 Published:2000-12-25

摘要: 近年发表的关于陆地碳循环的国内外论著反映出如下观点 :1陆地主要的碳库 -陆地生物圈、土壤圈和岩石圈的碳贮量分别为 560 Pg C、 1 40 0~ 1 50 0 Pg C(有机碳 )、 2 .0× 1 0 7Pg C(有机碳 ) ,其中岩石圈中化石燃料的贮量约为 50 0 0~ 1 0 0 0 0 Pg C;2大气 CO2“未知汇”的量大概在 0 .7~ 3.1 Pg C之间 ,“未知汇”可能存在于中纬度地区 ;3土地利用与土地覆被变化造成的 CO2 排放量估计值差异较大 ,可能在 0 .6~ 3.6Pg C之间 ;4陆地碳循环模型已从静态模型发展到动态模型 ,而且更加注重大气 CO2 浓度增加和 LUCC对碳循环的影响以及 C、 N、 P和 S等循环的耦合作用。

关键词: 汇, 陆地碳循环, 碳循环模型,

Abstract: Progresses of terrestrial carbon cycle studies are introduced in terms of some recent home and oversea literatures in this paper. These progresses are as follows: ① Major terrestrial carbon reservoirs, i.e. the biomass of terrestrial biosphere, pedosphere and lithosphere, their organic carbon storages are 560Pg C, 1 400~1 500Pg C, 2 0×10 7Pg C respectively, and carbon storages of fossil fuels in lithosphere are about 5 000~10 000Pg C. Organic carbon storages of forest, grassland, desert, tundra, wetland and farmland in the terrestrial biosphere are 422Pg C、92 6 Pg C、5 9 Pg C、9 0 Pg C、7 8 Pg C、21 5 Pg C respectively. ② The “Missing sink” of CO 2 at atmosphere is about 0 7~3 1Pg C, and the assessing value of 1 7Pg C is generally thought to be satisfactory. It is possible that the “Missing sink” is located in middle latitude region of land in the earth. ③ The fluxes of CO 2 (Source) from LUCC (Land use/cover change) are between 0 6 and 3 6Pg C, and results of flux from different researchers have much difference. The value of global source and sink of CH4 is (535±125) Tg CH 4/a and (560±100) Tg CH 4/a respectively. ④ Some studies show that increasing concentration of CO 2 in atmosphere can increase NPP of vegetation. ⑤ The dynamic models of terrestrial carbon cycling have been developed recently, and the effect of LUCC and the coupling of cycling of C、N、P and S have been paid more attention to in these models.

Key words: model of carbon cycle, sink, source, terrestrial carbon cycle

中图分类号: 

  • P595