DOI: 10.1016/j.foreco.2013.09.033
Scopus记录号: 2-s2.0-84888133058
论文题名: Effects of the pruning intensity and tree size on multi-stemmed Prosopis flexuosa trees in the Central Monte, Argentina
作者: Alvarez J.A. ; Villagra P.E. ; Villalba R. ; Debandi G.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 310 起始页码: 857
结束页码: 864
语种: 英语
英文关键词: Arid woodlands
; Multi-stemmed trees
; Prosopis
; Pruning
; Silviculture
Scopus关键词: Arid woodlands
; Multi-stemmed trees
; Prosopis
; Pruning
; Silviculture
; Productivity
; Forestry
; canopy architecture
; diameter
; ecological modeling
; forest management
; growth response
; legume
; pruning
; silviculture
; size
; sustainable development
; woodland
; Forestry
; Productivity
; Prosopis
; Pruning
; Argentina
; Monte
; Prosopis
; Prosopis flexuosa
英文摘要: Forestry use in Prosopis flexuosa woodlands in the Central Monte is limited by low wood productivity and by most of the trees being multi-stemmed. Desert inhabitants have turned pruning into a common practice to get some forest products, increase wood production and improve tree shape. In this study we tested pruning practices used by locals on trees of different diameter classes and different pruning intensities in the aeolian plains of the Central Monte Desert. Two trials were conducted: (a) we tested the effects of pruning on three types of trees: adult multi-stemmed trees (7.5-15. cm basal diameter; n= 12 for pruned trees and 10 for control), young trees (3-7.5. cm basal diameter; n= 20 for pruned trees and 18 for control), and saplings (<3. cm basal diameter; n= 15 for pruned trees and 18 for control); (b) we compared the effects of different pruning intensities: heavy pruning (50% of crown removed and n= 10), intermediate pruning (25% of crown removed; n= 10), and unpruned individuals (n= 10). Basal diameters of all stems, total tree height, largest and smallest crown diameters were measured yearly. We estimated the equivalent basal diameter (EBD) and crown volume. Linear mixed models (LMM), in continuous variables, and general linear mixed models (GLMM), in discrete variables, were used for evaluating the effects of the treatments on the different variables. The response observed in pruned trees was an increased length of branches, which in both trials translated into increased crown diameter and volume. No initial response was recorded in basal diameter growth of the remaining stem. In adult trees, an increase in basal diameter was detected five years after pruning. A greater response of crown growth was found in individuals subjected to heavy pruning vs. individuals under intermediate pruning. Results suggested that pruning could improve the shape of Prosopis in the short run, and increase stem diameter growth in the long run, as observed for other tree species of Prosopis that received pruning throughout the world. This suggests that this practice could be potentially used to obtain poles and firewood without a decrease in wood productivity but with an increase in branch growth, and, in consequence, it could be included in silvicultural management of woodlands dominated by multi-stemmed trees and in models of sustainable management at local scale. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66324
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: Departamento de Dendrocronología e Historia Ambiental, Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales, IANIGLA, CCT Mendoza, CONICET, (CC 330 5500) Mendoza, Argentina; Facultad de Ciencias Agrarias, Universidad Nacional de Cuyo, (M5528AHB) Chacras de Coria, Mendoza, Argentina; Asociación para la Conservación de la Diversidad Biológica Argentina, BIOTA, Bosques Telteca 2237 (5509), Luján de Cuyo, Mendoza, Argentina
Recommended Citation:
Alvarez J.A.,Villagra P.E.,Villalba R.,et al. Effects of the pruning intensity and tree size on multi-stemmed Prosopis flexuosa trees in the Central Monte, Argentina[J]. Forest Ecology and Management,2013-01-01,310