Phosphorus rather than nitrogen regulates ecosystem carbon dynamics after permafrost thaw

doi:10.1111/gcb.15845

	Phosphorus rather than nitrogen regulates ecosystem carbon dynamics after permafrost thaw
	Yang, Guibiao 1; Peng, Yunfeng ; Abbott, Benjamin W.; Biasi, Christina 3; Wei, Bin 1; Zhang, Dianye ; Wang, Jun ; Yu, Jianchun ; Li, Fei ; Wang, Guanqin 1; Kou, Dan 3; Liu, Futing ; Yang, Yuanhe1
	2021
发表期刊	GLOBAL CHANGE BIOLOGY
ISSN	1354-1013
卷号	27 期号:22 页码:5818-5830
摘要	Ecosystem carbon (C) dynamics after permafrost thaw depends on more than just climate change since soil nutrient status may also impact ecosystem C balance. It has been advocated that nitrogen (N) release upon permafrost thaw could promote plant growth and thus offset soil C loss. However, compared with the widely accepted C-N interactions, little is known about the potential role of soil phosphorus (P) availability. We combined 3-year field observations along a thaw sequence (constituted by four thaw stages, i.e., non-collapse and 5, 14, and 22 years since collapse) with an in-situ fertilization experiment (included N and P additions at the level of 10 g N m(-2) year(-1) and 10 g P m(-2) year(-1)) to evaluate ecosystem C-nutrient interactions upon permafrost thaw. We found that changes in soil P availability rather than N availability played an important role in regulating gross primary productivity and net ecosystem productivity along the thaw sequence. The fertilization experiment confirmed that P addition had stronger effects on plant growth than N addition in this permafrost ecosystem. These two lines of evidence highlight the crucial role of soil P availability in altering the trajectory of permafrost C cycle under climate warming.
关键词	carbon cycle carbon fluxes carbon-climate feedback climate warming nutrient availability thermokarst
学科领域	Biodiversity Conservation ; Ecology ; Environmental Sciences
DOI	10.1111/gcb.15845
收录类别	SCI
语种	英语
WOS关键词	CO2 FLUX ; SOIL ; TUNDRA ; AVAILABILITY ; PRODUCTIVITY ; DEGRADATION ; LIMITATION ; PLATEAU ; ALASKA
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000688992800001
出版者	WILEY
文献子类	Article
出版地	HOBOKEN
EISSN	1365-2486
资助机构	National Natural Science Foundation of China [31825006, 31988102, 91837312] ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program [2019QZKK0106] ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences [QYZDB-SSW-SMC049] ; China National Postdoctoral Program for Innovative Talents [BX20200363]
作者邮箱	yhyang@ibcas.ac.cn
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://ir.ibcas.ac.cn/handle/2S10CLM1/26473
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Abbott, Benjamin W.] Brigham Young Univ, Dept Plant & Wildlife Sci, Provo, UT 84602 USA 4.Univ Eastern Finland, Dept Environm & Biol Sci, Kuopio, Finland
推荐引用方式 GB/T 7714	Yang, Guibiao,Peng, Yunfeng,Abbott, Benjamin W.,et al. Phosphorus rather than nitrogen regulates ecosystem carbon dynamics after permafrost thaw[J]. GLOBAL CHANGE BIOLOGY,2021,27(22):5818-5830.
APA	Yang, Guibiao.,Peng, Yunfeng.,Abbott, Benjamin W..,Biasi, Christina.,Wei, Bin.,...&Yang, Yuanhe.(2021).Phosphorus rather than nitrogen regulates ecosystem carbon dynamics after permafrost thaw.GLOBAL CHANGE BIOLOGY,27(22),5818-5830.
MLA	Yang, Guibiao,et al."Phosphorus rather than nitrogen regulates ecosystem carbon dynamics after permafrost thaw".GLOBAL CHANGE BIOLOGY 27.22(2021):5818-5830.

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