| 陆地碳循环研究进展 |
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| 引用本文： | 耿元波,董云社,孟维奇.陆地碳循环研究进展[J].地理科学进展,2000,19(4):297-306. |
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| 作者姓名： | 耿元波 董云社 孟维奇 |
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| 作者单位： | 中国科学院地理科学与资源研究所,北京,100101 |
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| 基金项目： | 国家自然科学基金资助项目!(49971 0 0 5)，中科院地理科学与资源研究所知识创新工程前
沿项目!(CXIOG- A0 0 - A0 6)，“九五”国家 |
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| 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。
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| 关 键 词： | 陆地碳循环 源 汇 碳循环模型 |
| 收稿时间： | 2000-10-01 |
| 修稿时间： | 2000-11-01 |
Progresses of Terrestrial Carbon Cycle Studies |
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| Geng Yuan-bo,Dong Yun-she,Meng Wei-qi.Progresses of Terrestrial Carbon Cycle Studies[J].Progress in Geography,2000,19(4):297-306. |
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| Authors: | Geng Yuan-bo Dong Yun-she Meng Wei-qi |
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| Institution: | Institute of Geographical Sciences and Natural Resources Research, CAS, Beijing 100101, China |
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| 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. |
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| Keywords: | terrestrial carbon cycle source sink model of carbon cycle |
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