DOI: 10.1016/j.foreco.2012.05.026
Scopus记录号: 2-s2.0-84869886785
论文题名: Fertilization and irrigation effects on tree level aboveground net primary production, light interception and light use efficiency in a loblolly pine plantation
作者: Campoe O.C. ; Stape J.L. ; Albaugh T.J. ; Lee Allen H. ; Fox T.R. ; Rubilar R. ; Binkley D.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 288 起始页码: 43
结束页码: 48
语种: 英语
英文关键词: Dominance
; Leaf area
; MAESTRA model
; Production ecology
; Resource use
; SETRES
Scopus关键词: Dominance
; Growth response
; Individual tree
; Individual tree crown
; Intensity of competition
; Irrigation effects
; Leaf area
; Leaf Area Index
; Light capture
; Light interception
; Light use efficiency
; Loblolly pine
; Loblolly pine plantations
; Net primary production
; Photosynthetically active radiation
; Pinus taeda
; Process-based models
; Resource use
; SETRES
; Shifting patterns
; Tree level
; Tree size
; Wood biomass
; Computer simulation
; Ecology
; Efficiency
; Irrigation
; Forestry
; aboveground production
; fertilization (reproduction)
; growth determination
; irrigation
; light use efficiency
; net primary production
; plantation forestry
; shifting cultivation
; tree planting
; Biomass
; Fertilization
; Forestry
; Irrigation
; Light Absorption
; Photosynthesis
; Pinus Taeda
; Productivity
; Radiation
; Pinus taeda
英文摘要: Fertilization and irrigation may substantially increase productivity of forests by increasing stand leaf area index and the efficiency of converting intercepted light into wood biomass. This stand-level growth response is the summation of individual tree responses, and these tree-level responses are often non-linear, resulting from shifting in the intensity of competition and dominance. We examined tree-level responses of aboveground net primary production (ANPP), absorbed photosynthetically active radiation (APAR) and (light use efficiency) LUE in relation to tree size class to explore how stand-level outcomes depend on shifting patterns among trees. We evaluated the production ecology of a nine-year-old loblolly pine (Pinus taeda L.) plantation, 2years after the initiation of treatments: control, irrigation, fertilization and irrigation+fertilization. We measured tree level ANPP, simulated APAR for individual tree crowns using the MAESTRA process-based model and calculated LUE (ANPP/APAR) in relation to tree size to explore the influence of tree dominance on both light capture and light use efficiency. Fertilization and irrigation+fertilization strongly increased both APAR and LUE, in contrast to little effect of irrigation alone. Tree size had a strong influence on APAR and LUE across all treatments; the largest 20% trees showed 3.4 times greater ANPP when compared to the smallest 20% trees, with 66% resulting from higher APAR, and 34% from higher LUE, than the smallest 20% of trees. Fertilization increased the growth of the largest 20% trees 2-fold (8.6kg tree-1year-1), with 29% of the increase resulting from higher APAR (13.7GJ tree-1year-1), and 71% from higher LUE (0.63gMJ-1), relative to the largest trees in the control treatment (4.3kg tree-1year-1, 11GJ tree-1year-1 and 0.39gMJ-1, respectively). Irrigation and fertilization tripled production (13.2kg tree-1year-1) of the largest trees with an even greater proportional contribution from increased LUE (15.1GJ tree-1year-1, 85% response contribution; APAR 0.87gMJ-1, 15% response contribution). Overall, large trees grow faster than smaller trees because of greater light capture, whereas the greater response of large trees to treatments resulted more from increased efficiency of using light. © 2012 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66863
Appears in Collections: 影响、适应和脆弱性
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作者单位: Forestry Science and Research Institute - IPEF, Piracicaba, São Paulo 13418-260, Brazil; Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC 27695-8008, United States; Department of Forest Resources and Environmental Conservation, Virginia Polytechnic Institute and State University, Blacksburgh, VA 24061, United States; Departamento de Silvicultura, Facultad de Ciencias Forestales, Universidad de Concepción, Concepción, Chile; Department of Ecosystem Science and Sustainability, Colorado State University, Fort Collins, CO 80523, United States
Recommended Citation:
Campoe O.C.,Stape J.L.,Albaugh T.J.,et al. Fertilization and irrigation effects on tree level aboveground net primary production, light interception and light use efficiency in a loblolly pine plantation[J]. Forest Ecology and Management,2013-01-01,288