气候变化领域集成服务门户(CCPortal): Drought limits wood production of Juniperus przewalskii even as growing seasons lengthens in a cold and arid environment

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DOI	10.1016/j.catena.2020.104936
	Drought limits wood production of Juniperus przewalskii even as growing seasons lengthens in a cold and arid environment
	Zhang J.; Gou X.; Alexander M.R.; Xia J.; Wang F.; Zhang F.; Man Z.; Pederson N.
发表日期	2021
ISSN	3418162
卷号	196
英文摘要	Studies of xylogenesis can provide mechanistic understandings of the influence of climate on wood production and carbon sequestration at the cellular level. It is not yet clear how trees will respond to increasing temperature and precipitation variability and other extreme meteorological events that are expected to occur as climate continues to change. Here, we analyzed cambial phenology and xylogenesis of Juniperus przewalskii Kom. weekly (2011–2014) or biweekly (2015–2016) over six years on the northeastern Tibetan Plateau. We found that temperature plays a decisive role in the onset of xylogenesis and a daily mean temperature of 6.1 °C appears to be the threshold that determines growth onset. Additionally, we observed the end of xylogenesis is related to summer drought conditions. During the course of our observations, the onset of xylogenesis advanced nearly twice as much as the end of xylogenesis (3.1 vs 1.8 days decade−1, respectively), indicating a slight lengthening of the growing season. However, an increase in the duration of the growing season did not necessarily result in a greater level of wood production. In fact, we found that water availability affects the growth rate and early summer precipitation appears to be a key factor of wood production over the northeastern Tibetan Plateau. Our study provides new evidence of the malleable nature of tree growth and reveals potential mechanisms of how tree growth adjusts to climatic variations in cold and arid region. © 2020 Elsevier B.V.
英文关键词	Drought; Plasticity; Tibetan Plateau; Warming; Xylogenesis
语种	英语
scopus关键词	Catena
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158355
作者单位	Key Laboratory of Western China's Environmental Systems (Ministry of Education); College of Earth and Environmental Sciences; Lanzhou University; Lanzhou; 730000; China; Harvard Forest; Harvard University; 324 North Main Street; Petersham; MA 01366; United States; Gansu Liancheng Forest Ecosystem Field Observation and Research Station; Lanzhou University; Lanzhou; 730333; China; Liancheng National Nature Reserve in Gansu; Lanzhou; 730300; China; Midwest Dendro LLC; Naperville; IL 60565; United States
推荐引用方式 GB/T 7714	Zhang J.,Gou X.,Alexander M.R.,et al. Drought limits wood production of Juniperus przewalskii even as growing seasons lengthens in a cold and arid environment[J],2021,196.
APA	Zhang J..,Gou X..,Alexander M.R..,Xia J..,Wang F..,...&Pederson N..(2021).Drought limits wood production of Juniperus przewalskii even as growing seasons lengthens in a cold and arid environment.,196.
MLA	Zhang J.,et al."Drought limits wood production of Juniperus przewalskii even as growing seasons lengthens in a cold and arid environment".196(2021).