干旱区生态环境知识资源中心(Arid): Soil water stress overrides the benefit of water-use efficiency from rising CO2 and temperature in a cold semi-arid poplar plantation

Arid

DOI	10.1111/pce.14260
	Soil water stress overrides the benefit of water-use efficiency from rising CO2 and temperature in a cold semi-arid poplar plantation
	Jia, Guodong; Chen, Lixin; Yu, Xinxiao; Liu, Ziqiang
通讯作者	Jia, GD ; Yu, XX
来源期刊	PLANT CELL AND ENVIRONMENT
ISSN	0140-7791
EISSN	1365-3040
出版年	2022
英文摘要	The counteractive effect of atmospheric CO2 (c(a)) enrichment and drought stress on tree growth results in great uncertainty in the growth patterns of forest plantations in cold semi-arid regions. We analysed tree ring chronologies and carbon isotopes in Populus simonii plantations in cold semi-arid areas in northern China over the past four decades. We hypothesized that the hydraulic stress from drought would override the stimulating effect of increasing c(a) and temperature (T) on stem growth (basal area increment [BAI]). We found the stimulating effect of rising c(a) and T on the growth, indicated by continuous increase of intrinsic water-use efficiency in all stands and a positive correlation between T and BAI. However, these effects failed to alleviate the negative impacts of drought on tree growth. Concurrent acceleration of BAI reversed during the intensive drought episodes. Water stress resulted from inaccessibility of roots to deep soil water rather than from lack of precipitation, suggested by the decoupling of BAI from precipitation and vapour pressure deficit. Local soil water limitation might also cause greater stomatal regulation in declining trees, indicated by lower intercellular CO2 concentration. Thus, site-specific soil moisture conditions growth sensitivity to global warming resulting in site-specific decline episodes in drought-prone areas.
英文关键词	climate change dendrochronology isotope planted forests soil water use profile tree dieback
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000749674400001
WOS关键词	CARBON-ISOTOPE DISCRIMINATION ; INDUCED TREE MORTALITY ; CLIMATE-CHANGE ; RING DELTA-C-13 ; GROWTH DECLINE ; STABLE-ISOTOPES ; ATMOSPHERIC CO2 ; LODGEPOLE PINE ; ELEVATED CO2 ; DROUGHT
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377072
推荐引用方式 GB/T 7714	Jia, Guodong,Chen, Lixin,Yu, Xinxiao,et al. Soil water stress overrides the benefit of water-use efficiency from rising CO2 and temperature in a cold semi-arid poplar plantation[J],2022.
APA	Jia, Guodong,Chen, Lixin,Yu, Xinxiao,&Liu, Ziqiang.(2022).Soil water stress overrides the benefit of water-use efficiency from rising CO2 and temperature in a cold semi-arid poplar plantation.PLANT CELL AND ENVIRONMENT.
MLA	Jia, Guodong,et al."Soil water stress overrides the benefit of water-use efficiency from rising CO2 and temperature in a cold semi-arid poplar plantation".PLANT CELL AND ENVIRONMENT (2022).