DOI: 10.1016/j.foreco.2013.06.005
Scopus记录号: 2-s2.0-84880439290
论文题名: Magnesium fertilizer, weed control and clonal effects on wood stiffness of juvenile Pinus radiata at two contrasting sites
作者: Xue J. ; Clinton P.W. ; Leckie A.C. ; Graham J.D.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 306 起始页码: 128
结束页码: 134
语种: 英语
英文关键词: Clone
; Mg fertilizer
; Pinus radiata
; Stem slenderness
; Weed control
; Wood stiffness
Scopus关键词: Clonal materials
; Diameter-at-breast heights
; Interactive effect
; Management regime
; Pinus radiata
; Silvicultural treatments
; Stem slenderness
; Wood stiffness
; Fertilizers
; Forestry
; Stiffness
; Weed control
; Cloning
; clone
; coniferous tree
; fertilizer application
; juvenile
; magnesium
; silviculture
; stem
; stiffness
; weed control
; Clones
; Fertilizers
; Magnesium
; Pinus Radiata
; Stems
; Stiffness
; Weed Control
; Wood
英文摘要: Two field trials established at contrasting sites (Kaingaroa and Rolleston) with different silvicultural treatments [magnesium (Mg) fertilizer or plus or minus weed control (±WC)] but identical clones of Pinus radiata were measured at age 6 for tree height (Ht), diameter at breast height (DBH) and ground-line (GLD), and modulus of elasticity (MOE) of standing trees. This study was undertaken to (i) quantify the main and interactive effects of clone, site, Mg fertilizer or WC on stem slenderness and corewood MOE of juvenile radiata pine, and (ii) examine the relationships between clonal means of corewood MOE and stem slenderness from 15 selected clones.At the Kaingaroa site, clone had a significant (P<. 0.001) influence on stem slenderness and corewood MOE, which exhibited a 1.5-fold variation (1.48-2.33. GPa). The Mg fertilizer effect on MOE was not significant. At the Rolleston site, both WC and clone had significant (P<. 0.001) influence on corewood MOE. Compared to -WC, +WC reduced MOE by 7%. The MOE exhibited a 1.7-fold variation (1.67-2.83. GPa) among the 15 clones. Across both sites, MOE exhibited a 1.5-fold variation (1.65-2.55. GPa) among the 15 clones. Overall, clonal differences in MOE were substantial and larger than the differences due to site and WC. Significant interactions were also found between clone and Mg fertilizer, clone and WC, and clone and site.This study for the first time showed the clonal means of MOE was strongly and positively correlated to clonal means of stem slenderness. This study has the important implication for forest managers that clonal material can be closely matched to site conditions and management regimes to optimise product value. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66417
Appears in Collections: 影响、适应和脆弱性
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作者单位: Scion, Po Box 29237, Fendalton, Christchurch 8540, New Zealand; Scion, Private Bag 3020, Rotorua 3010, New Zealand
Recommended Citation:
Xue J.,Clinton P.W.,Leckie A.C.,et al. Magnesium fertilizer, weed control and clonal effects on wood stiffness of juvenile Pinus radiata at two contrasting sites[J]. Forest Ecology and Management,2013-01-01,306