DOI: 10.1016/j.foreco.2013.10.036
Scopus记录号: 2-s2.0-84888399882
论文题名: Experimental reversal of soil acidification in a deciduous forest: Implications for seedling performance and changes in dominance of shade-tolerant species
作者: Marlow J. ; Peart D.R.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2014
卷: 313 起始页码: 63
结束页码: 68
语种: 英语
英文关键词: Acid rain
; Calcium limitation
; Canopy dominance
; Competition
; Reciprocal replacement
; Zero-sum game
Scopus关键词: Acid rain
; Acidification
; Calcium
; Competition
; Game theory
; Plants (botany)
; Soils
; Acer saccharum marsh
; Canopy dominance
; Forested watersheds
; Reciprocal replacement
; Relative performance
; Seedling performance
; Soil acidifications
; Zero-sum game
; Forestry
; acid rain
; acid soil
; acidification
; calcium
; deciduous forest
; experimental study
; forest canopy
; growth rate
; leaf area
; performance assessment
; reciprocity
; seedling
; shade tolerance
; soil remediation
; Acidification
; Calcium
; Competition
; Forest Canopy
; Plants
; Rain
; Soil
; North America
; Acer
; Acer saccharum
; Fagus
; Fagus grandifolia
英文摘要: Acer saccharum Marsh. (sugar maple) and the less valuable Fagus grandifolia Ehrh. (American beech) are the dominant shade-tolerant canopy species over large forest tracts in northeast North America. Negative effects of soil acidification on sugar maple could favor greater dominance of beech in the "zero-sum game" dynamics of closed-canopy forests. A watershed-level Ca addition experiment, reversing some effects of acidification (including pH and Ca availability), provided an opportunity to test effects on beech and sugar maple seedling performance over 5. yrs, under different canopy species. Ca addition almost doubled leaf area of sugar maple and increased that of beech by over 40%. However extension growth was increased only in sugar maple. Both the direction of effects and the relative performance of maple and beech were consistent across canopy species. We combine our results and other evidence into a conceptual model of how soil acidification and Ca depletion is shifting the competitive balance in the seedling stage toward beech, implying an increase in beech relative abundance in the canopy, unless compensated by other factors, such as beech bark disease. These findings, and mounting evidence of other negative effects of soil acidification, suggest re-examination of the cost-effectiveness of chemical remediation in some poorly buffered forested watersheds. © 2013. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66181
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Biological Sciences, Dartmouth College, Hanover, NH, United States
Recommended Citation:
Marlow J.,Peart D.R.. Experimental reversal of soil acidification in a deciduous forest: Implications for seedling performance and changes in dominance of shade-tolerant species[J]. Forest Ecology and Management,2014-01-01,313