气候变化领域集成服务门户(CCPortal): Tree ring anatomy indices of Pinus tabuliformis revealed the shifted dominant climate factor influencing potential hydraulic function in western Qinling Mountains

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DOI	10.1016/j.dendro.2021.125881
	Tree ring anatomy indices of Pinus tabuliformis revealed the shifted dominant climate factor influencing potential hydraulic function in western Qinling Mountains
	Hong, Yixue; Zhang, Lingnan; Liu, Xiaohong; Aritsara, Amy Ny Aina; Zeng, Xiaomin; Xing, Xiaoyu; Lu, Qiangqiang; Wang, Keyi; Wang, Yabo; Zhang, Yu; Wang, Wenchao
通讯作者	Zhang, LN ; Liu, XH (通讯作者)，Shaanxi Normal Univ, Sch Geog & Tourism, Xian 710119, Peoples R China.
发表日期	2021
ISSN	1125-7865
EISSN	1612-0051
卷号	70
英文摘要	Trees can adjust xylem anatomical structure related with potential hydraulic functions to cope with climate variability. We therefore need a better understanding of how climate variability constrains wood anatomy and tree radial growth. Pinus tabuliformis dominates natural forests and plantations over the western Qinling Mountains, which is one of the ecologically vulnerable areas in China. Here, we investigated the response of P. tabuliformis tree-ring anatomical structure to climate variability by applying wood anatomy analysis, and evaluated the influences of anatomical traits on potential hydraulic functions and the climate significance of intraannual density fluctuations (IADFs). We found that with the increasing temperature from spring to summer, the negative effect of temperature on the formation and enlargement of earlywood and transition-wood tracheids was gradually enhanced. However, spring precipitation not only had a direct and positive influence on the formation of earlywood, but also had a delaying impact on the transition-wood cell enlargement. Besides, the smaller earlywood tracheid size of P. tabuliformis could be a substantially characteristic reflecting spring drought. The contribution of lumen diameter on conduit wall reinforcement was dominated in earlywood, while the contribution of cell wall thickness was greater than that of lumen diameter in latewood. The different contributions of anatomical traits on conduit wall reinforcement would further affect the response of potential hydraulic function to climate. IADFs of P. tabuliformis could be a potential indicator to reflect the abnormal summer precipitation events in the western Qinling Mountains. IADFs with strong and weak intensity indicated years with high and low rates of change in mid-summer precipitation, respectively. Future warmer and drier climate in the western Qinling Mountains will likely result in the production of smaller tracheids to ensure hydraulic safety, which means the stronger drought resistant of P. tabuliformis in the future. In this study, we linked the xylem anatomy and potential hydraulics functions with intra-seasonal climate variability in the context of climate warming and drying, and proposed some xylem anatomical indices reflecting potential drought events.
关键词	INTRAANNUAL DENSITY-FLUCTUATIONS GROWING-SEASON WOOD DENSITY SCOTS PINE GROWTH DROUGHT XYLOGENESIS XYLEM IRRIGATION MECHANISMS
英文关键词	Climate change; Tree ring; Quantitative xylem anatomy; Intra-annual density fluctuation
语种	英语
WOS研究方向	Forestry ; Physical Geography
WOS类目	Forestry ; Geography, Physical
WOS记录号	WOS:000702886600002
来源期刊	DENDROCHRONOLOGIA
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254832
作者单位	[Hong, Yixue; Zhang, Lingnan; Liu, Xiaohong; Zeng, Xiaomin; Lu, Qiangqiang; Wang, Keyi; Wang, Yabo; Zhang, Yu; Wang, Wenchao] Shaanxi Normal Univ, Sch Geog & Tourism, Xian 710119, Peoples R China; [Liu, Xiaohong] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China; [Aritsara, Amy Ny Aina] Guangxi Univ, State Key Lab Conservat & Utilizat Subtrop Agrobi, Plant Ecophysiol & Evolut Grp, Nanning 530004, Guangxi, Peoples R China; [Xing, Xiaoyu] Qinling Natl Bot Garden, Xian 710061, Peoples R China; [Lu, Qiangqiang] Inst Bot Shaanxi Prov, Xian Bot Garden Shaanxi Prov, Xian 710061, Peoples R China
推荐引用方式 GB/T 7714	Hong, Yixue,Zhang, Lingnan,Liu, Xiaohong,et al. Tree ring anatomy indices of Pinus tabuliformis revealed the shifted dominant climate factor influencing potential hydraulic function in western Qinling Mountains[J]. 中国科学院西北生态环境资源研究院,2021,70.
APA	Hong, Yixue.,Zhang, Lingnan.,Liu, Xiaohong.,Aritsara, Amy Ny Aina.,Zeng, Xiaomin.,...&Wang, Wenchao.(2021).Tree ring anatomy indices of Pinus tabuliformis revealed the shifted dominant climate factor influencing potential hydraulic function in western Qinling Mountains.DENDROCHRONOLOGIA,70.
MLA	Hong, Yixue,et al."Tree ring anatomy indices of Pinus tabuliformis revealed the shifted dominant climate factor influencing potential hydraulic function in western Qinling Mountains".DENDROCHRONOLOGIA 70(2021).