Response of Quercus velutina growth and water use efficiency to climate variability and nitrogen fertilization in a temperate deciduous forest in the northeastern USA.

التفاصيل البيبلوغرافية
العنوان:	Response of Quercus velutina growth and water use efficiency to climate variability and nitrogen fertilization in a temperate deciduous forest in the northeastern USA.
المؤلفون:	Jennings KA; Earth Systems Research Center, University of New Hampshire, Durham, NH 03824, USA katie.jennings@unh.edu., Guerrieri R; Earth Systems Research Center, University of New Hampshire, Durham, NH 03824, USA., Vadeboncoeur MA; Earth Systems Research Center, University of New Hampshire, Durham, NH 03824, USA., Asbjornsen H; Earth Systems Research Center, University of New Hampshire, Durham, NH 03824, USA Department of Natural Resources and the Environment and Earth Systems Research Center, University of New Hampshire, 114 James Hall, Durham, NH 03824, USA.
المصدر:	Tree physiology [Tree Physiol] 2016 Apr; Vol. 36 (4), pp. 428-43. Date of Electronic Publication: 2016 Feb 25.
نوع المنشور:	Journal Article; Research Support, U.S. Gov't, Non-P.H.S.
اللغة:	English
بيانات الدورية:	Publisher: Oxford University Press Country of Publication: Canada NLM ID: 100955338 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1758-4469 (Electronic) Linking ISSN: 0829318X NLM ISO Abbreviation: Tree Physiol Subsets: MEDLINE
أسماء مطبوعة:	Publication: Oxford : Oxford University Press Original Publication: Victoria, [B.C.] : Heron Pub., c1986-
مواضيع طبية MeSH:	Carbon Dioxide/metabolism , Nitrogen/metabolism , Quercus/*growth & development, Climate ; Fertilizers ; Massachusetts ; Quercus/metabolism ; Temperature ; Water
مستخلص:	Nitrogen (N) deposition and changing climate patterns in the northeastern USA can influence forest productivity through effects on plant nutrient relations and water use. This study evaluates the combined effects of N fertilization, climate and rising atmospheric CO2on tree growth and ecophysiology in a temperate deciduous forest. Tree ring widths and stable carbon (δ(13)C) and oxygen (δ(18)O) isotopes were used to assess tree growth (basal area increment, BAI) and intrinsic water use efficiency (iWUE) ofQuercus velutinaLamb., the dominant tree species in a 20+ year N fertilization experiment at Harvard Forest (MA, USA). We found that fertilized trees exhibited a pronounced and sustained growth enhancement relative to control trees, with the low- and high-N treatments responding similarly. All treatments exhibited improved iWUE over the study period (1984-2011). Intrinsic water use efficiency trends in the control trees were primarily driven by changes in stomatal conductance, while a stimulation in photosynthesis, supported by an increase in foliar %N, contributed to enhancing iWUE in fertilized trees. All treatments were predominantly influenced by growing season vapor pressure deficit (VPD), with BAI responding most strongly to early season VPD and iWUE responding most strongly to late season VPD. Nitrogen fertilization increasedQ. velutinasensitivity to July temperature and precipitation. Combined, these results suggest that ambient N deposition in N-limited northeastern US forests has enhanced tree growth over the past 30 years, while rising ambient CO2has improved iWUE, with N fertilization and CO2having synergistic effects on iWUE. (© The Author 2016. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com.)
فهرسة مساهمة:	Keywords: atmospheric CO2; carbon isotope; changing climate; nitrogen; oxygen isotope; tree rings
المشرفين على المادة:	0 (Fertilizers) 059QF0KO0R (Water) 142M471B3J (Carbon Dioxide) N762921K75 (Nitrogen)
تواريخ الأحداث:	Date Created: 20160227 Date Completed: 20161221 Latest Revision: 20161230
رمز التحديث:	20240628
DOI:	10.1093/treephys/tpw003
PMID:	26917704
قاعدة البيانات:	MEDLINE

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تدمد:	1758-4469
DOI:	10.1093/treephys/tpw003