DOI: 10.1016/j.foreco.2015.08.016
Scopus记录号: 2-s2.0-84945468962
论文题名: Tamm Review: On the strength of evidence when comparing ecosystem functions of mixtures with monocultures
作者: Forrester D.I. ; Pretzsch H.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2015
卷: 356 起始页码: 41
结束页码: 53
语种: 英语
英文关键词: Allometry
; Biodiversity
; Complementarity
; Mixed-species forest
; Stand density
Scopus关键词: Biodiversity
; Biology
; Ecology
; Ecosystems
; Mixing
; Mixtures
; Productivity
; Allometry
; Complementarity
; Ecosystem functions
; Mixed-species forests
; Mixed-species stands
; Spatial replication
; Stand densities
; Strength of evidence
; Forestry
; allometry
; biodiversity
; chronosequence
; ecosystem function
; ecosystem service
; interspecific variation
; intraspecific variation
; mixed forest
; monoculture
; morphology
; phenology
; physiology
; species diversity
; stand dynamics
英文摘要: The diversity of dominant tree species in a forest might strongly influence ecosystem functions and services, but the current evidence is not strong enough to provide general insights on when and where these diversity effects will be large or small for a given combination of species. With this goal in mind, the aim of this study is to discuss some of the factors that may need to be considered when designing studies or judging the strength of evidence provided in studies about tree-species mixing effects in forests. While the focus is on productivity, other ecosystem functions relating to light, water and nutrients are also considered. Firstly we consider the implications of stand-level spatial replication, the effects of stand density and tracking mixing effects through time in the same stand or by using chronosequences. Mixing effects at single sites (or ages) can represent significant increases in productivity while the mean mixing effect for the same mixture across a wide range of sites (or a whole rotation) can be much smaller and insignificant. The use of tree- and neighbourhood-level analyses to expand the range of treatments compared with stand-level analyses is then discussed before examining upscaling issues relating to inter- and intra-specific variability in morphology, allometry, physiology and phenology. Ignoring intra-specific variability between individuals in monocultures and mixed-species stands when upscaling to the stand level can strongly distort mixing effects, resulting in very misleading conclusions. The difference between correlations and causality is then discussed using the production ecology equation and mass balance approaches. We also discuss some of the methodological considerations when calculating mixing effects. All of these factors can have significant implications for the calculation and interpretation of mixing effects in forests. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65287
Appears in Collections: 影响、适应和脆弱性
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作者单位: Silviculture, Faculty of Environment and Natural Resources, Freiburg University, Tennenbacherstr. 4, Freiburg, Germany; Forest Growth and Yield Science, Technische Universität München, Germany
Recommended Citation:
Forrester D.I.,Pretzsch H.. Tamm Review: On the strength of evidence when comparing ecosystem functions of mixtures with monocultures[J]. Forest Ecology and Management,2015-01-01,356