Increased soil release of greenhouse gases shrinks terrestrial carbon uptake enhancement under warming

Increased soil release of greenhouse gases shrinks terrestrial carbon uptake enhancement under warming

© 2020 John Wiley & Sons Ltd.

Bibliographische Detailangaben
Veröffentlicht in:Global change biology. - 1999. - 26(2020), 8 vom: 04. Aug., Seite 4601-4613
1. Verfasser: Liu, Shuwei (VerfasserIn)
Weitere Verfasser: Zheng, Yajing, Ma, Ruoya, Yu, Kai, Han, Zhaoqiang, Xiao, Shuqi, Li, Zhaofu, Wu, Shuang, Li, Shuqing, Wang, Jinyang, Luo, Yiqi, Zou, Jianwen
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2020
Zugriff auf das übergeordnete Werk:Global change biology
Schlagworte:Journal Article climate change greenhouse gas meta-analysis soil C and N pool warming Greenhouse Gases Soil Carbon Dioxide 142M471B3J mehr... Carbon 7440-44-0 Nitrous Oxide K50XQU1029 Methane OP0UW79H66
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520 |a © 2020 John Wiley & Sons Ltd. 
520 |a Warming can accelerate the decomposition of soil organic matter and stimulate the release of soil greenhouse gases (GHGs), but to what extent soil release of methane (CH4 ) and nitrous oxide (N2 O) may contribute to soil C loss for driving climate change under warming remains unresolved. By synthesizing 1,845 measurements from 164 peer-reviewed publications, we show that around 1.5°C (1.16-2.01°C) of experimental warming significantly stimulates soil respiration by 12.9%, N2 O emissions by 35.2%, CH4 emissions by 23.4% from rice paddies, and by 37.5% from natural wetlands. Rising temperature increases CH4 uptake of upland soils by 13.8%. Warming-enhanced emission of soil CH4 and N2 O corresponds to an overall source strength of 1.19, 1.84, and 3.12 Pg CO2 -equivalent/year under 1°C, 1.5°C, and 2°C warming scenarios, respectively, interacting with soil C loss of 1.60 Pg CO2 /year in terms of contribution to climate change. The warming-induced rise in soil CH4 and N2 O emissions (1.84 Pg CO2 -equivalent/year) could reduce mitigation potential of terrestrial net ecosystem production by 8.3% (NEP, 22.25 Pg CO2 /year) under warming. Soil respiration and CH4 release are intensified following the mean warming threshold of 1.5°C scenario, as compared to soil CH4 uptake and N2 O release with a reduced and less positive response, respectively. Soil C loss increases to a larger extent under soil warming than under canopy air warming. Warming-raised emission of soil GHG increases with the intensity of temperature rise but decreases with the extension of experimental duration. This synthesis takes the lead to quantify the ecosystem C and N cycling in response to warming and advances our capacity to predict terrestrial feedback to climate change under projected warming scenarios 
650 4 |a Journal Article 
650 4 |a climate change 
650 4 |a greenhouse gas 
650 4 |a meta-analysis 
650 4 |a soil C and N pool 
650 4 |a warming 
650 7 |a Greenhouse Gases  |2 NLM 
650 7 |a Soil  |2 NLM 
650 7 |a Carbon Dioxide  |2 NLM 
650 7 |a 142M471B3J  |2 NLM 
650 7 |a Carbon  |2 NLM 
650 7 |a 7440-44-0  |2 NLM 
650 7 |a Nitrous Oxide  |2 NLM 
650 7 |a K50XQU1029  |2 NLM 
650 7 |a Methane  |2 NLM 
650 7 |a OP0UW79H66  |2 NLM 
700 1 |a Zheng, Yajing  |e verfasserin  |4 aut 
700 1 |a Ma, Ruoya  |e verfasserin  |4 aut 
700 1 |a Yu, Kai  |e verfasserin  |4 aut 
700 1 |a Han, Zhaoqiang  |e verfasserin  |4 aut 
700 1 |a Xiao, Shuqi  |e verfasserin  |4 aut 
700 1 |a Li, Zhaofu  |e verfasserin  |4 aut 
700 1 |a Wu, Shuang  |e verfasserin  |4 aut 
700 1 |a Li, Shuqing  |e verfasserin  |4 aut 
700 1 |a Wang, Jinyang  |e verfasserin  |4 aut 
700 1 |a Luo, Yiqi  |e verfasserin  |4 aut 
700 1 |a Zou, Jianwen  |e verfasserin  |4 aut 
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