Roots and Associated Fungi Drive Long-Term Carbon Sequestration in Boreal Forest

被引：1160

作者：

Clemmensen, K. E. ^{[1
]}

Bahr, A. ^{[2
]}

Ovaskainen, O. ^{[3
]}

Dahlberg, A. ^{[1
,4
]}

Ekblad, A. ^{[5
]}

Wallander, H. ^{[2
]}

Stenlid, J. ^{[1
]}

Finlay, R. D. ^{[1
]}

Wardle, D. A. ^{[6
]}

Lindahl, B. D. ^{[1
]}

机构：

[1] Swedish Univ Agr Sci, Uppsala BioCtr, Dept Forest Mycol & Plant Pathol, SE-75007 Uppsala, Sweden

[2] Lund Univ, Microbial Ecol Grp, Dept Biol, SE-22100 Lund, Sweden

[3] Univ Helsinki, Dept Biosci, FI-00014 Helsinki, Finland

[4] Swedish Univ Agr Sci, Swedish Species Informat Ctr, SE-75007 Uppsala, Sweden

[5] Univ Orebro, Sch Sci & Technol, SE-70182 Orebro, Sweden

[6] Swedish Univ Agr Sci, Dept Forest Ecol & Management, SE-90183 Umea, Sweden

来源：

SCIENCE | 2013年 / 339卷 / 6127期

基金：

欧洲研究理事会;

关键词：

LITTER DECOMPOSITION; ISOTOPE PATTERNS; NITROGEN UPTAKE; N-15; ABUNDANCE; ISLAND AREA; SOIL; ECTOMYCORRHIZAL; RATES; ERGOSTEROL; PROFILES;

D O I：

10.1126/science.1231923

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：

Boreal forest soils function as a terrestrial net sink in the global carbon cycle. The prevailing dogma has focused on aboveground plant litter as a principal source of soil organic matter. Using C-14 bomb-carbon modeling, we show that 50 to 70% of stored carbon in a chronosequence of boreal forested islands derives from roots and root-associated microorganisms. Fungal biomarkers indicate impaired degradation and preservation of fungal residues in late successional forests. Furthermore, 454 pyrosequencing of molecular barcodes, in conjunction with stable isotope analyses, highlights root-associated fungi as important regulators of ecosystem carbon dynamics. Our results suggest an alternative mechanism for the accumulation of organic matter in boreal forests during succession in the long-term absence of disturbance.

引用

页码：1615 / 1618

页数：5

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