DOI: 10.1016/j.foreco.2012.12.013
Scopus记录号: 2-s2.0-84872771143
论文题名: Mixing effect on volume growth of Fagus sylvatica and Pinus sylvestris is modulated by stand density
作者: Condés S. ; Del Rio M. ; Sterba H.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 292 起始页码: 86
结束页码: 95
语种: 英语
英文关键词: Growth efficiency
; Growth model
; Mixed and pure stands comparison
; Mixed stands
; Volume increment
Scopus关键词: Dominant height
; Fagus sylvatica
; Growth efficiency
; Growth models
; Key factors
; Management plans
; Mixed forests
; Mixing effects
; National forest inventories
; Pine stand
; Pinus sylvestris
; Potential benefits
; Pure stands
; Quadratic mean diameter
; Small area
; Species composition
; Stand densities
; Stand development
; Volume growth
; Volume increment
; Biodiversity
; Efficiency
; Mixing
; Forestry
; biodiversity
; community composition
; coniferous forest
; deciduous forest
; forest ecosystem
; forest inventory
; forest management
; growth modeling
; growth rate
; interspecific interaction
; stand structure
; volume change
; Biodiversity
; Efficiency
; Forestry
; Forests
; Growth
; Mixing
; Models
; Navarra
; Spain
; Fagus
; Fagus sylvatica
; Pinus sylvestris
英文摘要: Despite the increasing relevance of mixed stands due to their potential benefits; little information is available with regard to the effect of mixtures on yield in forest systems. Hence, it is necessary to study inter-specific relationships, and the resulting yield in mixed stands, which may vary with stand development, site or stand density, etc. In Spain, the province of Navarra is considered one of the biodiversity reservoirs; however, mixed forests occupy only a small area, probably as a consequence of management plans, in which there is an excessive focus on the productivity aspect, favoring the presence of pure stands of the most marketable species. The aim of this paper is to study how growth efficiencies of beech (Fagus sylvatica) and pine (Pinus sylvestris) are modified by the admixture of the other species and to determine whether stand density modifies interspecific relationships and to what extent. Two models were fitted from Spanish National Forest Inventory data, for P. sylvestris and F. sylvatica respectively, which relate the growth efficiency of the species, i.e. the volume increment of the species divided by the species proportion by area, with dominant height, quadratic mean diameter, stocking degree, and the species proportions by area of each species. Growth efficiency of pine increased with the admixture of beech, decreasing this positive effect when stocking degree increased. However, the positive effect of pine admixture on beech growth was greater at higher stocking degrees. Growth efficiency of beech was also dependent on stand dominant height, resulting in a net negative mixing effect when stand dominant heights and stocking degrees were simultaneously low. There is a relatively large range of species proportions and stocking degrees which results in transgressive overyielding: higher volume increments in mixed stands than that of the most productive pure pine stands. We concluded that stocking degree is a key factor in between-species interactions, being the effects of mixing not always greater at higher stand densities, but it depends on species composition. © 2012 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66728
Appears in Collections: 影响、适应和脆弱性
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作者单位: Dept. Economía y Gestión Forestal, Escuela Técnica Superior de Ingenieros de Montes, Universidad Politécnica de Madrid, Ciudad Universitaria s/n, 28040 Madrid, Spain; Dept. Selvicultura y Gestión de Sistemas Forestales, INIA-CIFOR, Ctra. A Coruña, km 7.5, 28040 Madrid, Spain; Sustainable Forest Management Research Institute, UVa-INIA, Spain; Dept. of Forest and Soil Sciences, BOKU University of Natural Resources and Life Sciences, Peter Jordanstrasse 82, Vienna, Austria
Recommended Citation:
Condés S.,Del Rio M.,Sterba H.. Mixing effect on volume growth of Fagus sylvatica and Pinus sylvestris is modulated by stand density[J]. Forest Ecology and Management,2013-01-01,292