Potential CO2 emissions from defrosting permafrost soils of the Qinghai-Tibet Plateau under different scenarios of climate change in 2050 and 2070

doi:10.1016/j.catena.2016.08.035

NWIPB OpenIR

	Potential CO2 emissions from defrosting permafrost soils of the Qinghai-Tibet Plateau under different scenarios of climate change in 2050 and 2070
	Bosch, Anna 1; Schmidt, Karsten 1; He, Jin-Sheng 2,3; Doerfer, Corina 1; Scholten, Thomas 1
	2017-02-01
发表期刊	CATENA
卷号	149 页码:221-231
文章类型	Article
摘要	Permafrost soils store enormous quantities of organic carbon. Especially on the alpine Qinghai-Tibet Plateau, global warming induces strong permafrost thawing, which strengthens the microbial decomposition of organic carbon and the emission of the greenhouse gas carbon dioxide (CO2). Enhanced respiration rates may intensify climate warming in turn, but the magnitude of future CO2 emissions from this data-scarce region in a changing climate remains highly uncertain. Here, we aim at an area-wide estimation of future potential CO2 emissions for the permafrost region on the Qinghai-Tibet Plateau as key region for climate change studies due to its size and sensitiveness. We calculated four potential soil respiration scenarios for 2050 and 2070 each. Using a regression model, results from laboratory experiments and C stock estimations from other studies, we provide an approximation of total potential soil CO2 emissions on a regional scale ranging from 737.90 g CO2 m(-2) 4224.77 g CO2 m(-2) y(-1). Our calculations as first estimate of thawing-induced CO2 emissions (5123 g CO2 m(-2) y(-1)-3002.82 g CO2 m(2) y(-1)) from permafrost soils of the Qinghai-Tibet Plateau under global warming appear to be consistent to measurements of C loss from thawing permafrost soils measured within other studies. Thawing-induced soil CO2 emissions from permafrost soils with a organic C content ranging from 2.42 g degrees C kg(-1) to 425.23 g C kg(-1) increase general soil respiration by at least about one third on average at a temperature of 5 degrees C. Differences between scenarios remain <1% and thawing-induced CO2 emissions generally decrease over time comparing 2015, 2050 and 2070. With this spatial approximation at a regional scale, a first area-wide estimate of potential CO2 emissions for 2050 and 2070 from permafrost soils of the Qinghai-Tibet Plateau is provided. This offers support of assessing potential area-specific greenhouse gas emissions and more differentiated climate change models. (C) 2016 Elsevier B.V. All rights reserved.
关键词	Permafrost Soil Carbon Carbon Dioxide Soil Respiration Qinghai-tibet Plateau Climate Change Scenarios
WOS标题词	Science & Technology ; Physical Sciences ; Life Sciences & Biomedicine
DOI	10.1016/j.catena.2016.08.035
关键词[WOS]	CARBON RELEASE ; TERRESTRIAL ECOSYSTEMS ; ORGANIC-CARBON ; AUTOTROPHIC RESPIRATION ; HIGH ASIA ; TEMPERATURE ; DEGRADATION ; PRECIPITATION ; GRASSLANDS ; DYNAMICS
收录类别	SCI
语种	英语
项目资助者	Evangelisches Studienwerk Villigst e.V. ; German Federal Ministry for Education and Research (BMBF)(03G0810A)
WOS研究方向	Geology ; Agriculture ; Water Resources
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS记录号	WOS:000390733300021
引用统计	被引频次：30[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/6644
专题	中国科学院西北高原生物研究所
作者单位	1.Univ Tubingen, Dept Geosci, Chair Soil Sci & Geomorphol, Tubingen, Germany 2.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Peoples R China 3.Peking Univ, Key Lab Earth Surface Proc, Coll Urban & Environm Sci, Dept Ecol,Minist Educ, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Bosch, Anna,Schmidt, Karsten,He, Jin-Sheng,et al. Potential CO2 emissions from defrosting permafrost soils of the Qinghai-Tibet Plateau under different scenarios of climate change in 2050 and 2070[J]. CATENA,2017,149:221-231.
APA	Bosch, Anna,Schmidt, Karsten,He, Jin-Sheng,Doerfer, Corina,&Scholten, Thomas.(2017).Potential CO2 emissions from defrosting permafrost soils of the Qinghai-Tibet Plateau under different scenarios of climate change in 2050 and 2070.CATENA,149,221-231.
MLA	Bosch, Anna,et al."Potential CO2 emissions from defrosting permafrost soils of the Qinghai-Tibet Plateau under different scenarios of climate change in 2050 and 2070".CATENA 149(2017):221-231.