Managing uncertainty in soil carbon feedbacks to climate change

被引:0
作者
Bradford, Mark A. [1 ,2 ]
Wieder, William R. [3 ,4 ]
Bonan, Gordon B. [3 ]
Fierer, Noah [5 ,6 ]
Raymond, Peter A. [1 ]
Crowther, Thomas W. [1 ,2 ]
机构
[1] Yale Univ, Sch Forestry & Environm Studies, New Haven, CT 06511 USA
[2] Netherlands Inst Ecol NIOO KNAW, Dept Terr Ecol, NL-6700 AB Wageningen, Netherlands
[3] Natl Ctr Atmospher Res, Climate & Global Dynam Lab, POB 3000, Boulder, CO 80307 USA
[4] Univ Colorado, Inst Arctic & Alpine Res, Boulder, CO 80309 USA
[5] Univ Colorado, Dept Ecol & Evolutionary Biol, Boulder, CO 80309 USA
[6] Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA
基金
美国国家科学基金会;
关键词
ORGANIC-MATTER DECOMPOSITION; EARTH SYSTEM MODELS; MICHAELIS-MENTEN KINETICS; TEMPERATURE SENSITIVITY; USE EFFICIENCY; LITTER DECOMPOSITION; MICROBIAL EFFICIENCY; THERMAL-ACCLIMATION; CYCLE FEEDBACKS; PLANT INPUTS;
D O I
10.1038/NCLIMATE3071
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Planetary warming may be exacerbated if it accelerates loss of soil carbon to the atmosphere. This carbon-cycle-climate feedback is included in climate projections. Yet, despite ancillary data supporting a positive feedback, there is limited evidence for soil carbon loss under warming. The low confidence engendered in feedback projections is reduced further by the common representation in models of an outdated knowledge of soil carbon turnover. `Model-knowledge integration' - representing in models an advanced understanding of soil carbon stabilization - is the first step to build confidence. This will inform experiments that further increase confidence by resolving competing mechanisms that most influence projected soil-carbon stocks. Improving feedback projections is an imperative for establishing greenhouse gas emission targets that limit climate change.
引用
收藏
页码:751 / 758
页数:8
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