GLACIAL-TO-INTERGLACIAL VARIATIONS IN THE CARBON ISOTOPIC COMPOSITION OF ATMOSPHERIC CO2

被引：175
|
作者：
MARINO, BD
MCELROY, MB
SALAWITCH, RJ
SPAULDING, WG
机构：
[1] HARVARD UNIV,DIV APPL SCI,CAMBRIDGE,MA 02138
[2] DAMES & MOORE,LAS VEGAS,NV 89119
来源：
NATURE | 1992年 / 357卷 / 6378期
关键词：
D O I：
10.1038/357461a0
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Samples of the C4 shrub Atriplex confertifolia recovered from packrat middens in the western United States provide a record of changes in the C-13/C-12 ratio (delta-C-13) of atmospheric carbon dioxide. During the last ice age, atmospheric CO2 was isotopically light relative to interglacial periods, a result attributed to a combination of factors including reduced terrestrial biomass and decreased productivity of the polar ocean.
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页码：461 / 466
页数：6
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