Plant Regrowth as a Driver of Recent Enhancement of Terrestrial CO2 Uptake

被引：32

作者：

Kondo, Masayuki ^{[1
]}

Ichii, Kazuhito ^{[1
,2
]}

Patra, Prabir K. ^{[3
]}

Poulter, Benjamin ^{[4
]}

Calle, Leonardo ^{[5
,6
]}

Koven, Charles ^{[7
]}

Pugh, Thomas A. M. ^{[8
,9
,10
]}

Kato, Etsushi ^{[11
]}

Harper, Anna ^{[12
]}

Zaehle, Soenke ^{[13
]}

Wiltshire, Andy ^{[14
]}

机构：

[1] Chiba Univ, Ctr Environm Remote Sensing, Chiba, Japan

[2] Natl Inst Environm Studies, Ctr Global Environm Res, Tsukuba, Ibaraki, Japan

[3] Japan Agcy Marine Earth Sci & Technol, Project Team Adv Climate Modeling, Inst Arctic Climate & Environm Res, Res & Dev Ctr Global Change, Yokohama, Kanagawa, Japan

[4] NASA, Goddard Space Flight Ctr, Biospher Sci Lab, Greenbelt, MD USA

[5] Montana State Univ, Inst Ecosyst, Bozeman, MT 59717 USA

[6] Montana State Univ, Dept Ecol, Bozeman, MT 59717 USA

[7] Lawrence Berkeley Natl Lab, Climate & Environm Sci Div, Berkeley, CA USA

[8] Karlsruhe Inst Technol, Inst Meteorol & Climate Res, Environm Atmospher Res, Garmisch Partenkirchen, Germany

[9] Univ Birmingham, Sch Geog Earth & Environm Sci, Birmingham, W Midlands, England

[10] Univ Birmingham, Birmingham Inst Forest Res, Birmingham, W Midlands, England

[11] Inst Appl Energy, Tokyo, Japan

[12] Univ Exeter, Coll Engn Math & Phys Sci, Exeter, Devon, England

[13] Max Planck Inst Biochem, Biogeochem Integrat Dept, Jena, Germany

[14] Met Off Hadley Ctr, Exeter, Devon, England

来源：

GEOPHYSICAL RESEARCH LETTERS | 2018年 / 45卷 / 10期

基金：

美国国家航空航天局;

关键词：

carbon budget; plant regrowth; CO2; fertilization; land use change; biosphere model; LAND-USE CHANGE; CARBON-DIOXIDE; VEGETATION DYNAMICS; FOREST MANAGEMENT; COVER CHANGE; CLIMATE; FLUXES; EMISSIONS; INCREASE; BUDGET;

D O I：

10.1029/2018GL077633

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The increasing strength of land CO2 uptake in the 2000s has been attributed to a stimulating effect of rising atmospheric CO2 on photosynthesis (CO2 fertilization). Using terrestrial biosphere models, we show that enhanced CO2 uptake is induced not only by CO2 fertilization but also an increasing uptake by plant regrowth (accounting for 0.330 +/- 0.10 PgC/year increase of CO2 uptake in the 2000s compared with the 1960s-1990s) with its effect most pronounced in eastern North America, southern-eastern Europe, and southeastern temperate Eurasia. Our analysis indicates that ecosystems in North America and Europe have established the current productive state through regrowth since the 1960s, and those in temperate Eurasia are still in a stage from regrowth following active afforestation in the 1980s-1990s. As the strength of model representation of CO2 fertilization is still in debate, plant regrowth might have a greater potential to sequester carbon than indicated by this study.

引用

页码：4820 / 4830

页数：11

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