气候变化领域集成服务门户(CCPortal): Effects of age and environment on stable carbon isotope ratios in tree rings of riparian Populus

CCPortal

DOI	10.1016/j.palaeo.2019.03.022
	Effects of age and environment on stable carbon isotope ratios in tree rings of riparian Populus
	Friedman J.M.; Stricker C.A.; Csank A.Z.; Zhou H.
发表日期	2019
ISSN	0031-0182
起始页码	25
结束页码	32
卷号	524
英文摘要	Stable carbon isotopes of riparian tree rings are enabling improved reconstruction of past climate variability, but this advance is limited by difficulty distinguishing the effects of tree age from those of climate. We investigated relative influence of age and climate trends in genus Populus, which dominates floodplain forests in Europe, Asia and North America. We related precipitation and river flow to annual variation in stable carbon isotope ratio (δ 13 C) in trees with a broad distribution of ages spanning two hundred years. On the floodplain of the lightly regulated Little Missouri River, North Dakota, USA, we examined a total of 845 rings from seven specimens of cottonwood tree (Populus deltoides W. Bartram ex Marshall ssp. monilifera [Aiton] Eckenwalder). Cottonwood δ 13 C decreased from pith to bark in whole wood, but this trend was almost completely eliminated in purified cellulose. The δ 13 C offset between whole wood and cellulose increased from pith to bark, consistent with trends of decreasing cellulose and increasing hemicellulose as a proportion of whole wood. While annual ring width was correlated with monthly precipitation from April through June, δ 13 C showed strong correlations only in June and July, suggesting that these complementary proxies allow resolution of seasonal variation in water availability. We conclude that past climate can be reconstructed from δ 13 C of purified cellulose from cottonwood without detrending for tree age. © 2019
英文关键词	Cellulose; Climate; Drought; Hemicellulose; Populus; River flow
语种	英语
scopus关键词	annual variation; carbon isotope ratio; cellulose; climate change; deciduous tree; dendrochronology; dendroclimatology; drought stress; floodplain; paleoclimate; riparian forest; river flow; stable isotope; tree ring; Asia; Europe; Missouri River; United States; Populus; Populus deltoides
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150980
作者单位	U.S. Geological Survey, 2150 Centre Avenue, Building C, Fort Collins, CO 80526, United States; U.S. Geological Survey, Denver Federal Center, Building 95, MS963, Denver, CO 80225, United States; University of Nevada, Department of Geography, 1664 N. Virginia St., Reno, NV 89557, United States; State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, CAS, Xinjiang, China
推荐引用方式 GB/T 7714	Friedman J.M.,Stricker C.A.,Csank A.Z.,et al. Effects of age and environment on stable carbon isotope ratios in tree rings of riparian Populus[J],2019,524.
APA	Friedman J.M.,Stricker C.A.,Csank A.Z.,&Zhou H..(2019).Effects of age and environment on stable carbon isotope ratios in tree rings of riparian Populus.Palaeogeography, Palaeoclimatology, Palaeoecology,524.
MLA	Friedman J.M.,et al."Effects of age and environment on stable carbon isotope ratios in tree rings of riparian Populus".Palaeogeography, Palaeoclimatology, Palaeoecology 524(2019).