DOI: 10.1016/j.foreco.2012.11.014
Scopus记录号: 2-s2.0-84871857761
论文题名: Inter- and intra-specific competitiveness of plantation-grown American chestnut (Castanea dentata)
作者: Gauthier M.-M. ; Zellers K.E. ; Löf M. ; Jacobs D.F.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 291 起始页码: 289
结束页码: 299
语种: 英语
英文关键词: Afforestation
; American chestnut
; Crown competition factor
; Ecophysiology
; Forest restoration
; Stand density
Scopus关键词: Afforestation
; American chestnut
; Crown competition factor
; Ecophysiology
; Forest restoration
; Stand densities
; Competition
; Conservation
; Physiology
; Plants (botany)
; Reforestation
; Restoration
; Fruits
; afforestation
; competitiveness
; fungus
; growth rate
; juvenile
; native species
; nitrogen
; nut
; pathogen
; plantation
; population density
; regression
; relative abundance
; spacing
; survival
; Castanea
; Competition
; Conservation
; Forestation
; Forestry
; Fruits
; Physiology
; Plants
; Reforestation
; Restoration
; Indiana
; North America
; United States
; Castanea dentata
; Cryphonectria parasitica
; Prunus
; Prunus serotina
; Quercus rubra
英文摘要: The introduction of the fungal pathogen Cryphonectria parasitica (Murr.) Barr. decimated American chestnut (Castanea dentata (Marsh.) Borkh.) throughout its native range in North America. A blight-resistant backcross hybrid form of American chestnut has been developed, and these backcross trees are likely to be incorporated into restoration programs in the near future. To help guide future afforestation efforts, this study examined juvenile (five growing seasons) morphological and physiological competitive aspects of American chestnut grown in a plantation setting with northern red oak (Quercus rubra L.) and black cherry (Prunus serotina Ehrh.) in Indiana, USA. Species were grown in seven possible species combinations including both monospecific and polyspecific combinations at three densities (1×1m, 2×2m, and 3×3m). Despite an initial advantage in height, American chestnut exhibited the lowest relative height growth in the 2×2 and 3×3m spacings, resulting in less total height compared to the other two species 5years after planting. Relative height growth, as well as final absolute heights, were comparable among species in the 1×1m spacing. Black cherry exhibited 2-3times greater relative ground-line diameter (GLD) growth compared to oak and chestnut at all spacings. Linear regressions showed that growth was generally proportional to net photosynthesis (A) for all species. Increases in A likely resulted from increases in leaf nitrogen concentration. Chestnut exhibited lower A than cherry and oak in years 2 and 3, but no differences occurred in year 4. Additionally, chestnut had significantly higher predawn leaf water potential (leaf Ψpd) in year 4, reflecting greater drought stress in cherry and oak. While black cherry grew most aggressively, northern red oak and American chestnut performed acceptably, with high survival rates and moderate growth, especially in the 1×1m spacing. American chestnut had the poorest stem form overall, but fared better in the 1×1m spacing where the crown competition factor (CCF) was highest. Hence, an intermediate spacing between 1×1 and 2×2m could optimize chestnut's growth and stem form. Mixture effects may be attributed mainly to individual species growth characteristics rather than inter-specific interactions during this juvenile developmental stage. © 2012 Elsevier B.V.. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66755
Appears in Collections: 影响、适应和脆弱性
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作者单位: Hardwood Tree Improvement and Regeneration Center, Department of Forestry and Natural Resources, Purdue University, 715 W State Street, West Lafayette, IN 47907-2061, United States; Swedish University of Agricultural Sciences, Southern Swedish Forest Research Centre, PO Box 49, S-230 53 Alnarp, Sweden
Recommended Citation:
Gauthier M.-M.,Zellers K.E.,Löf M.,et al. Inter- and intra-specific competitiveness of plantation-grown American chestnut (Castanea dentata)[J]. Forest Ecology and Management,2013-01-01,291