干旱区生态环境知识资源中心(Arid): Stabilization of carbon sequestration in a Chinese desert steppe benefits from increased temperatures and from precipitation outside the growing season

Arid

DOI	10.1016/j.scitotenv.2019.06.481
	Stabilization of carbon sequestration in a Chinese desert steppe benefits from increased temperatures and from precipitation outside the growing season
	Yang, Bo; Gong, Jirui; Zhang, Zihe; Wang, Biao; Zhu, Chenchen; Shi, Jiayu; Liu, Min; Liu, Yinghui; Li, Xiaobin
通讯作者	Gong, Jirui ; Li, Xiaobin
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2019
卷号	691 页码:263-277
英文摘要	The carbon (C) dynamics of desert steppes play an important role in the C budget of temperate steppes. Using the Terrestrial Ecosystem Regional model (TECO-R) model for desert steppes, we examined the dynamics and potential driving mechanisms for C stocks at different temporal and spatial scales from 2000 to 2017 in northern China. The ecosystem C density averaged 2.73 kg C m(-2) and soil organic C accounted for 91.6%. The grassland biome stored 2.85 kg C m(-2), which is higher than the shrub biome (2.19 kg C m(-2)). The ecosystem storage increased by an average of 27.75 g C m(-2) yr(-1), with the fastest increase in the southeastern part of the study area. The grassland biome storage increased by an average of 33.54 g C m(-2) yr(-1), versus 25.74 g C m(-2) yr(-1) for the shrub biome. The desert steppe C stock totaled 288.29 Tg C, and increased at 3.09 Tg C yr(-1). An average of >45% of the aboveground biomass was browsed by livestock. The growing season precipitation was significantly positively correlated with changes in the C stock. Increasing temperature was negatively correlated with the C stock, especially for soil carbon. Precipitation was an important driving factor, but warming interacted with precipitation to affect C sequestration during the growing season. Outside the growing season, the increased precipitation and temperature stabilized C sequestration in the desert steppe. This improved understanding of feedbacks between the desert steppe's C cycle and climate will improve predictions of C dynamics in terrestrial ecosystems and of the impacts of climate change. (c) 2019 Elsevier B.V. All rights reserved.
英文关键词	Carbon budget Semi-arid ecosystems Climate change TECO-R model Desert steppe
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000504009600026
WOS关键词	NET PRIMARY PRODUCTIVITY ; SOIL CARBON ; SEMIARID ECOSYSTEMS ; SHRUB ENCROACHMENT ; CLIMATE-CHANGE ; TERRESTRIAL BIOSPHERE ; DROUGHT VARIABILITY ; MICROBIAL BIOMASS ; NITROGEN ADDITION ; GRAZING INTENSITY
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
EI主题词	2019-11-15
来源机构	北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310863
作者单位	Beijing Normal Univ, Fac Geog Sci, Sch Nat Resources, State Key Lab Surface Proc & Resource Ecol, Beijing 100875, Peoples R China
推荐引用方式 GB/T 7714	Yang, Bo,Gong, Jirui,Zhang, Zihe,et al. Stabilization of carbon sequestration in a Chinese desert steppe benefits from increased temperatures and from precipitation outside the growing season[J]. 北京师范大学,2019,691:263-277.
APA	Yang, Bo.,Gong, Jirui.,Zhang, Zihe.,Wang, Biao.,Zhu, Chenchen.,...&Li, Xiaobin.(2019).Stabilization of carbon sequestration in a Chinese desert steppe benefits from increased temperatures and from precipitation outside the growing season.SCIENCE OF THE TOTAL ENVIRONMENT,691,263-277.
MLA	Yang, Bo,et al."Stabilization of carbon sequestration in a Chinese desert steppe benefits from increased temperatures and from precipitation outside the growing season".SCIENCE OF THE TOTAL ENVIRONMENT 691(2019):263-277.