干旱区生态环境知识资源中心(Arid): Increased drought and atmospheric CO2 positively impact intrinsic water use efficiency but do not promote tree growth in semi-arid areas of northwestern China

Arid

DOI	10.1007/s00468-018-1807-8
	Increased drought and atmospheric CO2 positively impact intrinsic water use efficiency but do not promote tree growth in semi-arid areas of northwestern China
	Lu, Kanglong 1; Chen, Ning 1; Zhang, Xiaowei 1,2; Wang, Jingru 1; Wang, Minghao 1; Khan, Salman 1; Han, Chun 1; Zhang, Cankun 1; Wang, Shuyuan 1; Wang, Luning 1; Gao, Wenting 1; Liu, Yongjing 1; Zhao, Changming 1
通讯作者	Zhao, Changming
来源期刊	TREES-STRUCTURE AND FUNCTION
ISSN	0931-1890
EISSN	1432-2285
出版年	2019
卷号	33 期号:3 页码:669-679
英文摘要	Key messageThis work studied the response of tree growth to the increased drought and carbon dioxide in semi-arid areas of northwestern China.AbstractForests ecosystems play a key role in the global carbon cycle. However, effects of increased drought and rising atmospheric carbon dioxide (C-a) on it are complex and there are many uncertainties. In this study, we evaluated this issue through dendroecology in semi-arid regions of northwest China. Results found the basal area increment of trees decreased by 28% (from 7.59 to 5.43cm(2)year(-1)) as the intrinsic water use efficiency increased 32% (from 98.61 to 130.28 mu molmol(-1)). Despite both C-a and drought positively affected intrinsic water use efficiency, they did not promote tree growth. Meanwhile, values of intercellular [CO2] increased 14% (from 158.83 to 180.89ppm) while the ratio of intercellular [CO2] to C-a decreased 7% (from 0.50 to 0.46). Our study advances understanding of the variability of the global carbon cycle under climate change.
英文关键词	Climate change Basal area increment Carbon isotopes Tree rings Picea wilsonii
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000469005900004
WOS关键词	CARBON-ISOTOPE DISCRIMINATION ; SOUTHERN RANGE-EDGE ; CANOPY LEAF-AREA ; ELEVATED CO2 ; CLIMATE-CHANGE ; STOMATAL CONDUCTANCE ; STEM-GROWTH ; MEDITERRANEAN TREES ; RADIAL GROWTH ; FOREST TREES
WOS类目	Forestry
WOS研究方向	Forestry
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/219122
作者单位	1.Lanzhou Univ, Sch Life Sci, State Key Lab Grassland Agroecosyst, Lanzhou 730000, Gansu, Peoples R China; 2.Gansu Agr Univ, Forestry Coll, Lanzhou 730070, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Lu, Kanglong,Chen, Ning,Zhang, Xiaowei,et al. Increased drought and atmospheric CO2 positively impact intrinsic water use efficiency but do not promote tree growth in semi-arid areas of northwestern China[J]. 兰州大学,2019,33(3):669-679.
APA	Lu, Kanglong.,Chen, Ning.,Zhang, Xiaowei.,Wang, Jingru.,Wang, Minghao.,...&Zhao, Changming.(2019).Increased drought and atmospheric CO2 positively impact intrinsic water use efficiency but do not promote tree growth in semi-arid areas of northwestern China.TREES-STRUCTURE AND FUNCTION,33(3),669-679.
MLA	Lu, Kanglong,et al."Increased drought and atmospheric CO2 positively impact intrinsic water use efficiency but do not promote tree growth in semi-arid areas of northwestern China".TREES-STRUCTURE AND FUNCTION 33.3(2019):669-679.