DOI: 10.1016/j.foreco.2014.02.016
Scopus记录号: 2-s2.0-84897046515
论文题名: Long-term responses of Scots pine and Norway spruce stands in Sweden to repeated fertilization and thinning
作者: Bergh J. ; Nilsson U. ; Allen H. ; Johansson U. ; Fahlvik N.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2014
卷: 320 起始页码: 118
结束页码: 128
语种: 英语
英文关键词: Guidelines
; Interactions
; Nitrogen
; Phosphorous
; Picea abies
; Pinus sylvestris
Scopus关键词: Beam plasma interactions
; Experiments
; Nitrogen
; Nitrogen fertilizers
; Phosphorus
; Plants (botany)
; Fertilization experiment
; Guidelines
; Nitrogen fertilization
; Nutrients availability
; Phosphorous
; Picea abies
; Pinus sylvestris
; Silvicultural practices
; Forestry
; coniferous forest
; data set
; diameter
; fertilizer application
; forest management
; forestry production
; growth rate
; guideline
; long-term change
; nitrogen
; nutrient availability
; phosphorus
; seedling
; silviculture
; stand structure
; thinning
; volume change
; Fertilizers
; Forestry
; Nitrogen
; Phosphorous Acid
; Picea Abies
; Pinus Sylvestris
; Plants
; Sweden
英文摘要: Recent investigations have shown that annual wood production in Sweden can be increased by 30millionm3 per year in a long-term perspective (>50years) by using new forest management methods such as new tree species or seedling materials. However, to meet the increased demands during the next 20years, Sweden will have to rely on silvicultural methods available today. Growth in boreal and cold temperate forest is with only few exceptions limited by nutrients availability, primarily nitrogen, and one way to satisfy the increased demands in a short-term perspective is nitrogen fertilization. A set of thinning and fertilization experiments were started in the 1960's in Scots pine and Norway spruce stands over the whole of Sweden representing different soil, moisture and vegetation types. We used data from these experiments to examine the long-term effects of repeated fertilization in thinned stands on growth, stand development, and yield. The 34 Scots pine sites and 13 Norway spruce sites included in our analyses had at least four treatment plots (no thinning, repeated light thinnings, repeated light thinnings with repeated N fertilization, and repeated light thinnings with repeated N+P fertilization). In northern Sweden, 100kgNha-1 and 150kgNha-1 were applied at each fertilization event for Scots pine and Norway spruce stands, respectively. In southern Sweden, 150kgha-1 N was applied in Scots pine stands and 200kgha-1 N in Norway spruce stands. Phosphorus was applied at the rate of 100kgha-1. Several sites also included non-thinned fertilized plots. Pine stands but not spruce stands were responsive (up to 25% more growth depending of the attribute assessed) to repeated fertilization. Surprisingly, the non-thinned pine stands showed strong continuing response to fertilization throughout the 30+ year observation period resulting in higher cumulative volume response than the thinned stands. In thinned stands incremental volume response to fertilization continued but slowly diminished with time indicating that fertilization and thinning effects were less than additive. However, thinning and fertilization effects were additive for diameter growth. Fertilization accelerated stand development with significant shifts in diameter distributions to larger and potentially more valuable trees. Conclusively, repeated nitrogen fertilization is a silvicultural practice that will result in significant and sustained increases in Scots pine production. © 2014 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66016
Appears in Collections: 影响、适应和脆弱性
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作者单位: Southern Swedish Forest Research Centre, Swedish University of Agricultural Sciences, P.O. Box 49, SE-230 53 Alnarp, Sweden; Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC 27695, United States; Unit for Field-based Forest Research, Swedish University of Agricultural Sciences, P.O. Box 17, SE-310 38 Simlångsdalen, Sweden
Recommended Citation:
Bergh J.,Nilsson U.,Allen H.,et al. Long-term responses of Scots pine and Norway spruce stands in Sweden to repeated fertilization and thinning[J]. Forest Ecology and Management,2014-01-01,320