气候变化领域集成服务门户(CCPortal): Progressive nitrogen limitation across the Tibetan alpine permafrost region

CCPortal

DOI	10.1038/s41467-020-17169-6
	Progressive nitrogen limitation across the Tibetan alpine permafrost region
	Kou, Dan; Yang, Guibiao; Li, Fei; Feng, Xuehui; Zhang, Dianye; Mao, Chao; Zhang, Qiwen; Peng, Yunfeng; Ji, Chengjun; Zhu, Qiuan; Fang, Yunting; Liu, Xueyan; Xu-Ri; Li, Siqi; Deng, Jia; Zheng, Xunhua; Fang, Jingyun; Yang, Yuanhe
通讯作者	Yang, YH (通讯作者)
发表日期	2020
ISSN	2041-1723
卷号	11 期号:1
英文摘要	The ecosystem carbon (C) balance in permafrost regions, which has a global significance in understanding the terrestrial C-climate feedback, is significantly regulated by nitrogen (N) dynamics. However, our knowledge on temporal changes in vegetation N limitation (i.e., the supply of N relative to plant N demand) in permafrost ecosystems is still limited. Based on the combination of isotopic observations derived from a re-sampling campaign along a similar to 3000 km transect and simulations obtained from a process-based biogeochemical model, here we detect changes in ecosystem N cycle across the Tibetan alpine permafrost region over the past decade. We find that vegetation N limitation becomes stronger despite the increased available N production. The enhanced N limitation on vegetation growth is driven by the joint effects of elevated plant N demand and gaseous N loss. These findings suggest that N would constrain the future trajectory of ecosystem C cycle in this alpine permafrost region.
关键词	SOIL ORGANIC-CARBON MYCORRHIZAL FUNGI CLIMATE-CHANGE BIOMASS ALLOCATION USE EFFICIENCY TUNDRA AVAILABILITY ECOSYSTEM PRODUCTIVITY METAANALYSIS
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000546623500031
来源期刊	NATURE COMMUNICATIONS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260105
推荐引用方式 GB/T 7714	Kou, Dan,Yang, Guibiao,Li, Fei,et al. Progressive nitrogen limitation across the Tibetan alpine permafrost region[J]. 中国科学院青藏高原研究所,2020,11(1).
APA	Kou, Dan.,Yang, Guibiao.,Li, Fei.,Feng, Xuehui.,Zhang, Dianye.,...&Yang, Yuanhe.(2020).Progressive nitrogen limitation across the Tibetan alpine permafrost region.NATURE COMMUNICATIONS,11(1).
MLA	Kou, Dan,et al."Progressive nitrogen limitation across the Tibetan alpine permafrost region".NATURE COMMUNICATIONS 11.1(2020).