globalchange  > 影响、适应和脆弱性
DOI: 10.1016/j.foreco.2017.01.005
Scopus记录号: 2-s2.0-85009144987
论文题名:
Basal area growth, carbon isotope discrimination, and intrinsic water use efficiency after fertilization of Douglas-fir in the Oregon Coast Range
作者: Cornejo-Oviedo E.H.; Voelker S.L.; Mainwaring D.B.; Maguire D.A.; Meinzer F.C.; Brooks J.R.
刊名: Forest Ecology and Management
ISSN:  0378-1127
出版年: 2017
卷: 389
起始页码: 285
结束页码: 295
语种: 英语
英文关键词: Basal area increment ; Carbon isotope discrimination ; Fertilization ; Pseudotsuga menziesii ; Water use efficiency
Scopus关键词: Efficiency ; Isotopes ; Nitrogen fertilizers ; Urea ; Basal area increment ; Carbon isotope discrimination ; Fertilization ; Pseudotsuga menziesii ; Water use efficiency ; Forestry ; basal area ; biomass allocation ; carbon isotope ; coniferous tree ; fertilizer application ; growing season ; growth response ; leaf area index ; water use efficiency ; North America ; Oregon ; United States ; Pseudotsuga ; Pseudotsuga menziesii
英文摘要: Many hectares of intensively managed Douglas-fir (Pseudotsuga menziesii Mirb. Franco) stands in western North America are fertilized with nitrogen (N) to increase growth rates, but only about ⅔ of all stands respond. Understanding the mechanisms of response facilitates prioritization of stands for treatment. The primary objective of this study was to test the hypothesis that the short-term basal area growth response to a single application of 224 kg N ha−1 as urea was associated with reduced stable carbon isotope discrimination (Δ13C) and increased intrinsic water use efficiency (iWUE) in a 20-yr-old plantation of Douglas-fir in the Oregon Coast Range, USA. Increment cores were measured to estimate earlywood, latewood, and total basal area increment over a time series from 1997 to 2015. Stable carbon isotope discrimination and iWUE were estimated using earlywood and latewood stable carbon isotope concentrations in tree-ring holocellulose starting seven years before fertilization in early 2009 and ending seven years after treatment. A highly significant (p < 0.01) interaction effect between fertilization treatment and year was found for total basal area growth and earlywood basal area increment. Specifically, fertilized trees showed significant responses (p < 0.05) in total basal area growth and earlywood basal area increment in the first (2009) and second (2010) growing seasons after fertilization in 2009. A marginally significant (p < 0.10) fertilization effect was found for latewood basal area increment only in the first growing season after treatment. A significant treatment × year interaction was also found for Δ13C and iWUE in earlywood and latewood. Fertilization significantly reduced earlywood Δ13C and increased earlywood iWUE in the first and second growing seasons after fertilization. Only a marginally significant fertilization effect was detected for latewood Δ13C and iWUE in the second growing season after treatment. Previous studies of N fertilization of Douglas-fir forests have reported consistently increased growth and iWUE on low productivity sites treated with relatively high fertilization rates. This study suggested that these responses can also be observed on highly productive sites despite their lower frequency and apparently shorter duration. Other key mechanisms driving growth responses appear less important than iWUE, including an increase in LAI and shift from belowground to aboveground carbon allocation. © 2017 Elsevier B.V.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64495
Appears in Collections:影响、适应和脆弱性

Files in This Item:

There are no files associated with this item.


作者单位: Departamento Forestal, Universidad Autónoma Agraria Antonio Narro, Calzada Antonio Narro # 1923, Buenavista, Saltillo, Coahuila, Mexico; Department of Forest Ecosystems and Society, Oregon State University, 321 Richardson Hall, Corvallis, OR, United States; Department of Forest Engineering, Resources and Management, Oregon State University, 280 Peavy Hall, Corvallis, OR, United States; Pacific Northwest Research Station, USDA Forest Service, Corvallis, OR, United States; National Health and Environmental Effect Research Laboratory, Western Ecology Division, US EPA, Corvallis, OR, United States

Recommended Citation:
Cornejo-Oviedo E.H.,Voelker S.L.,Mainwaring D.B.,et al. Basal area growth, carbon isotope discrimination, and intrinsic water use efficiency after fertilization of Douglas-fir in the Oregon Coast Range[J]. Forest Ecology and Management,2017-01-01,389
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Cornejo-Oviedo E.H.]'s Articles
[Voelker S.L.]'s Articles
[Mainwaring D.B.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Cornejo-Oviedo E.H.]'s Articles
[Voelker S.L.]'s Articles
[Mainwaring D.B.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Cornejo-Oviedo E.H.]‘s Articles
[Voelker S.L.]‘s Articles
[Mainwaring D.B.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.