干旱区生态环境知识资源中心(Arid): How did climate and CO2 concentration affect intrinsic water-use efficiency and tree growth in a semi-arid region of China?

Arid

DOI	10.1007/s00468-020-02075-7
	How did climate and CO2 concentration affect intrinsic water-use efficiency and tree growth in a semi-arid region of China?
	Yang, Tao; Yang, Bao; Boucher, Etienne; Rossi, Sergio
通讯作者	Yang, T (corresponding author), Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China. ; Yang, T (corresponding author), Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
来源期刊	TREES-STRUCTURE AND FUNCTION
ISSN	0931-1890
EISSN	1432-2285
出版年	2021
卷号	35 期号:3 页码:769-781
英文摘要	Key message Although an increased intrinsic water-use efficiency has been observed, drought stress played a leading role in controlling Chinese pine growth in semi-arid region of northern China. Climate change, which is acknowledged as the most important factor in affecting plant performance, could be modulated by increasing atmospheric CO2 concentration. In this study, a total of 141 Chinese pine ( Pinus tabuliformis ) trees were studied to estimate tree-ring width. Based on tree-ring delta C-13 records, we measured the fluctuations in leaf intercellular CO2 (C-i) and intrinsic water-use efficiency (iWUE) since industrialization period on Hasi mountain, Gansu province. We found that the long-term variation of iWUE has been increasing since 1850. On average, 73% of the total variance in iWUE was explained by temperature, Standardized Precipitation-Evapotranspiration Index (SPEI) and CO2 concentration. Over 19 and 23% of the variance was attributed solely to drought stress and CO2 concentration, respectively. For BAI (basal area increment), nearly 50% of the variance was explained by temperature, SPEI and CO2, with 40% of the variance in tree growth attributed to drought stress. In addition, our results show that the positive relationship between tree growth and drought stress did not change over time. When there was a wetter condition, a larger proportion of higher tree growth occurred, otherwise more trees had lower tree growth. We therefore, conclude that despite the clear increase of iWUE, its beneficial effect of this higher iWUE on tree growth was overcome by drought stress at our study area.
英文关键词	Tree-ring delta C-13 Intrinsic water-use efficiency Basal area increment Pinus tabuliformis Semi-arid region
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000610023300001
WOS类目	Forestry
WOS研究方向	Forestry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351908
作者单位	[Yang, Tao; Yang, Bao] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China; [Yang, Tao] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Yang, Bao] Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China; [Yang, Bao] Qinghai Normal Univ, Acad Plateau Sci & Sustainabil, Qinghai Res Ctr Qilian Mt Natl Pk, Xining 810008, Peoples R China; [Boucher, Etienne] Univ Quebec Montreal, Geotop, Dept Geog, Montreal, PQ H2X 3R9, Canada; [Boucher, Etienne] Univ Quebec Montreal, Ctr Etud Nord, Montreal, PQ H2X 3R9, Canada; [Rossi, Sergio] Univ Quebec Chicoutimi, Dept Sci Fondamentales, Chicoutimi, PQ G7H 2B1, Canada; [Rossi, Sergio] Chinese Acad Sci, Guangdong Prov Key Lab Appl Bot, Key Lab Vegetat Restorat & Management Degraded Ec, South China Bot Garden, Guangzhou, Peoples R China
推荐引用方式 GB/T 7714	Yang, Tao,Yang, Bao,Boucher, Etienne,et al. How did climate and CO2 concentration affect intrinsic water-use efficiency and tree growth in a semi-arid region of China?[J],2021,35(3):769-781.
APA	Yang, Tao,Yang, Bao,Boucher, Etienne,&Rossi, Sergio.(2021).How did climate and CO2 concentration affect intrinsic water-use efficiency and tree growth in a semi-arid region of China?.TREES-STRUCTURE AND FUNCTION,35(3),769-781.
MLA	Yang, Tao,et al."How did climate and CO2 concentration affect intrinsic water-use efficiency and tree growth in a semi-arid region of China?".TREES-STRUCTURE AND FUNCTION 35.3(2021):769-781.