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	The effect of decreasing permafrost stability on ecosystem carbon in the northeastern margin of the Qinghai-Tibet Plateau
	Liu, Wenjie1,2; Chen, Shengyun2; Liang, Junyi3,4; Qin, Xiang2; Kang, Shichang2; Ren, Jiawen2; Qin, Dahe2
刊名	SCIENTIFIC REPORTS
	2018-03-08
卷号	8页码:10
ISSN号	2045-2322
DOI	10.1038/s41598-018-22468-6
通讯作者	Chen, Shengyun(sychen@lzb.ac.cn)
英文摘要	The objective of this study is to investigate the effect of decreased permafrost stability on carbon storage of the alpine ecosystems in the northeastern margin of the Qinghai-Tibet Plateau. During July and August 2013, we selected 18 sites in five types of permafrost (stable, substable, transitional, unstable, and extremely unstable) regions. We measured aboveground phytomass carbon (APC) and soil respiration (SR), soil inorganic carbon (SIC), soil organic carbon (SOC), belowground phytomass carbon, and soil properties down to 50 cm at same types of soils and grasslands. The results indicated that ecosystem carbon in cold calcic soils first decreased and then increased as the permafrost stability declined. Overall, decreasing permafrost stability was expected to reduce ecosystem carbon in meadows, but it was not obvious in swamp meadows and steppes. APC decreased significantly, but SIC and SOC in steppes first decreased and then increased with declining permafrost stability. Soil clay fraction and soil moisture were the controls for site variations of ecosystem carbon. The spatial variations in SR were possibly controlled by soil moisture and precipitation. This meant that alpine ecosystems carbon reduction was strongly affected by permafrost degradation in meadows, but the effects were complex in swamp meadows and steppes.
收录类别	SCI
WOS关键词	SOIL ORGANIC-CARBON ; CLIMATE-CHANGE ; ACTIVE-LAYER ; ALPINE GRASSLANDS ; LAND DEGRADATION ; ALKALINE SOILS ; CHINA ; RESPIRATION ; VEGETATION ; IMPACTS
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
语种	英语
出版者	NATURE PUBLISHING GROUP
WOS记录号	WOS:000426825900007
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2558130
专题	寒区旱区环境与工程研究所
通讯作者	Chen, Shengyun
作者单位	1.Hainan Univ, Inst Trop Agr & Forestry, Haikou 570228, Hainan, Peoples R China 2.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Qilian Shan Stn Glaciol & Ecol Environm, State Key Lab Cryospher Sci, Lanzhou 730000, Gansu, Peoples R China 3.Oak Ridge Natl Lab, Div Environm Sci, POB 2008, Oak Ridge, TN 37831 USA 4.Oak Ridge Natl Lab, Climate Change Sci Inst, Oak Ridge, TN 37831 USA
推荐引用方式 GB/T 7714	Liu, Wenjie,Chen, Shengyun,Liang, Junyi,et al. The effect of decreasing permafrost stability on ecosystem carbon in the northeastern margin of the Qinghai-Tibet Plateau[J]. SCIENTIFIC REPORTS,2018,8:10.
APA	Liu, Wenjie.,Chen, Shengyun.,Liang, Junyi.,Qin, Xiang.,Kang, Shichang.,...&Qin, Dahe.(2018).The effect of decreasing permafrost stability on ecosystem carbon in the northeastern margin of the Qinghai-Tibet Plateau.SCIENTIFIC REPORTS,8,10.
MLA	Liu, Wenjie,et al."The effect of decreasing permafrost stability on ecosystem carbon in the northeastern margin of the Qinghai-Tibet Plateau".SCIENTIFIC REPORTS 8(2018):10.

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