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DOI | 10.1016/j.foreco.2017.04.030 |
Post-thinning density and fertilization affect Pinus taeda stand and individual tree growth | |
Albaugh, Timothy J.1; Fox, Thomas R.1; Rubilar, Rafael A.2; Cook, Rachel L.3; Amateis, Ralph L.1; Burkhart, Harold E.1 | |
2017-07-15 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT |
ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2017 |
卷号 | 396 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Chile |
英文摘要 | We installed a thinning and fertilization study at five sites in mid-rotation Pinus taeda L. stands in the southeastern United States to examine treatment effects on diameter growth, basal area production, and volume increment. The treatments were four levels of post-thinning stand density (247, 494, 741 and 1235 stems ha(-1)) and two levels of fertilization (none and 224 and 28 kg ha-1 of elemental nitrogen and phosphorus, respectively), applied in four replications at each site using either a randomized complete block (3 sites) or a split plot (2 sites) design. Six years after treatment, thinning significantly increased diameter and diameter increment as the residual density level decreased and increased stand basal area, stand basal area increment, stand volume and stand volume increment as residual density level increased at all sites. Fertilizer significantly increased diameter and stand basal area increments at two sites and stand volume increment at one site; these sites had low initial leaf area index, a metric commonly used to assess the potential for response to fertilization. Diameter increment increased as initial diameter class increased. Larger trees grew faster than smaller trees at all sites and for all treatments. Diameter growth decreased as initial stand basal area increased, and fertilization significantly increased diameter growth for a given level of initial stand basal area at sites where fertilization affected diameter growth. Stand volume increment increased as diameter increment increased for crop trees (largest 247 stems ha(-1)), whereas stand volume increment decreased as diameter increment increased for all trees. The stand-scale 'cost' for greater individual-tree diameter growth was a reduction in stand volume increment in the 247 stems ha(-1) treatment; this reduction was 13 m(3) ha(-1) yr(-1) across all sites compared with the 1235 stems ha(-1) treatment, whereas the individual tree diameter growth 'benefit' was 0.9 cm yr(-1) when comparing these same treatments. Trade-offs were quantified between individual tree size and stand growth across the thinning and fertilization levels imposed in this study, which will be useful in empirical and process-based modeling efforts for predicting thinning and fertilization responses of P. taeda. (C) 2017 Elsevier B.V. All'rights reserved. |
英文关键词 | Nitrogen Phosphorus Increment Loblolly pine |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000402217100020 |
WOS关键词 | SOUTHEASTERN UNITED-STATES ; LIGHT-USE EFFICIENCY ; LOBLOLLY-PINE ; LEAF-AREA ; FOREST FERTILIZATION ; NITROGEN-FERTILIZER ; VEGETATION CONTROL ; PLANTATIONS ; NUTRITION ; NUTRIENT |
WOS类目 | Forestry |
WOS研究方向 | Forestry |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/22137 |
专题 | 气候变化 |
作者单位 | 1.Virginia Tech, Dept Forest Resources & Environm Conservat, 228 Cheatham Hall, Blacksburg, VA 24061 USA; 2.Univ Concepcion, Fac Ciencias Forestales, Cooperat Prod Forestal, Victoria 631,Casilla 160-C, Concepcion, Chile; 3.North Carolina State Univ, Dept Forestry & Environm Resources, Raleigh, NC 27695 USA |
推荐引用方式 GB/T 7714 | Albaugh, Timothy J.,Fox, Thomas R.,Rubilar, Rafael A.,et al. Post-thinning density and fertilization affect Pinus taeda stand and individual tree growth[J]. FOREST ECOLOGY AND MANAGEMENT,2017,396. |
APA | Albaugh, Timothy J.,Fox, Thomas R.,Rubilar, Rafael A.,Cook, Rachel L.,Amateis, Ralph L.,&Burkhart, Harold E..(2017).Post-thinning density and fertilization affect Pinus taeda stand and individual tree growth.FOREST ECOLOGY AND MANAGEMENT,396. |
MLA | Albaugh, Timothy J.,et al."Post-thinning density and fertilization affect Pinus taeda stand and individual tree growth".FOREST ECOLOGY AND MANAGEMENT 396(2017). |
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