干旱区生态环境知识资源中心(Arid): Hydraulic Traits in Populus simonii Carr. at Stands of Categorized Ages in a Semi-Arid Area of Western Liaoning, Northeast China

Arid

DOI	10.3390/f14091759
	Hydraulic Traits in Populus simonii Carr. at Stands of Categorized Ages in a Semi-Arid Area of Western Liaoning, Northeast China
	Liu, Ping; He, Wenting; Wei, Hongxu; Hu, Shiyu; Zhou, Yiming; Wang, Yutao
通讯作者	Wang, YT
来源期刊	FORESTS
EISSN	1999-4907
出版年	2023
卷号	14 期号:9
英文摘要	Poplar plantations can acclimate to drought stress in semi-arid areas, where the variation of stand age may result in varied water adaptation strategies presented as hydrodynamic performance. In this study, nine mature Populus simonii Carr. individuals were targeted as sampling objects in plantations characterized to three stand ages: young (9 yr), middle-aged (17 yr), and near-mature (29 yr) stages in a semi-arid area of western Liaoning, Northeast China. Hydraulic traits were investigated as parameters of leaf pressure-volume curves, xylem embolism vulnerability curves, hydraulic structure, and wood density (WD). Results showed that osmotic potential (Psi(tlp)) and relative water content at the turgor loss point and cell-wall bulk elastic modulus were lowest in middle-aged stands (-2.19 MPa; 86.71%; 13.75 MPa). Stem and leaf-specific hydraulic conductivity (K-s and LSC) were all the highest in middle-aged stands. Xylem embolism vulnerability (P-50) and lethal water potential of trees (P-88) increased with the growth of stand age. Young stands faced minimal risk of hydraulic failure according to the stomatal safety margin (SSMtlp, Psi(tlp) minus P-50), which was consistent with the comprehensive evaluation results of the principal component analysis. WD was related to P-88 (R-2 = 0.51; p < 0.05). P-50 was related to drought avoidance traits Psi(tlp) (r = 0.76; p < 0.05) but not to xylem efficiency (K-s). Overall, WD can be an excellent proxy for hydraulic safety monitoring. Young and middle-aged Populus simonii populations are more adaptable to drought conditions than near-mature populations, and near-mature stands should receive intermediate cuttings to avoid exposure to drought stress.
英文关键词	hydraulic structure pressure-volume curves stand age wood density xylem embolism vulnerability
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001081145200001
WOS关键词	TURGOR LOSS POINT ; DROUGHT TOLERANCE ; WATER RELATIONS ; WOOD DENSITY ; PLANT VULNERABILITY ; TREE MORTALITY ; TRADE-OFFS ; XYLEM ; SIZE ; RESISTANCE
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/2XILL650/396438
推荐引用方式 GB/T 7714	Liu, Ping,He, Wenting,Wei, Hongxu,et al. Hydraulic Traits in Populus simonii Carr. at Stands of Categorized Ages in a Semi-Arid Area of Western Liaoning, Northeast China[J],2023,14(9).
APA	Liu, Ping,He, Wenting,Wei, Hongxu,Hu, Shiyu,Zhou, Yiming,&Wang, Yutao.(2023).Hydraulic Traits in Populus simonii Carr. at Stands of Categorized Ages in a Semi-Arid Area of Western Liaoning, Northeast China.FORESTS,14(9).
MLA	Liu, Ping,et al."Hydraulic Traits in Populus simonii Carr. at Stands of Categorized Ages in a Semi-Arid Area of Western Liaoning, Northeast China".FORESTS 14.9(2023).