DOI: 10.1016/j.foreco.2014.04.007
Scopus记录号: 2-s2.0-84899679694
论文题名: White spruce (Picea glauca) structural root system development and symmetry influenced by disc trenching site preparation
作者: Amichev B.Y. ; Bailey B.E. ; Van Rees K.C.J.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2014
卷: 326 起始页码: 1
结束页码: 8
语种: 英语
英文关键词: Center of diameter (COD)
; Cross-sectional area index (CSAI)
; Disc trenching
; Three-dimensional (3D) structural root models
; White spruce
Scopus关键词: Compressive strength
; Containers
; Plants (botany)
; Reforestation
; Three dimensional
; Trenching
; Center of diameter (COD)
; Cross sectional area
; Disc-trenched sites
; Mixedwood forests
; Natural regeneration
; Naturally regenerated seedlings
; Seedling establishment
; White spruce
; Seed
; Compression Strength
; Containers
; Picea Engelmannii
; Plants
; Reforestation
; Seeds
; Three Dimensional Design
英文摘要: Mounding site preparation is normally required prior to planting seedlings for sites with understory competition and cold and wet soils in order to increase seedling establishment and survival in the boreal forest. Concern has been raised that planting seedlings on mounded microsites may influence the spatial distribution of lateral roots and lead to potential windthrow. The objective of this study was to examine root symmetry for container white spruce ( Picea glauca) seedlings planted on disc trenched berms and no disc trenched sites compared to naturally regenerated seedlings in mixedwood forest of Saskatchewan. No significant differences were found between treatments for root cross sectional area index (CSAI) at radii of 25, 50 and 100. cm from the stem center. Values of CSAI for planted seedlings on disc trenching, no disc trenching and natural regeneration sites all exhibited a degree of root asymmetry (range of 0.63-0.92) rather than being symmetrical (0.25) for all three radii. Disc trenching site preparation only impacted the direction of root development on <50% of planted container white spruce seedlings, for which the center of diameter (COD) positions were located on the berm side leading to a potential root asymmetry. However, the magnitude of this potential asymmetry was within the range observed on no disc trenching and natural regeneration sites. Rooting depth at 25-100. cm radii from the stem, was significantly shallower in planted container seedlings (<6. cm) compared to naturally regenerated white spruce seedlings (>38. cm). Container seedlings exhibiting both shallow rooting depth and root asymmetry on disc trenched microsites suggests an increased risk for potential windthrow as the trees mature. © 2014 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65912
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Soil Science, University of Saskatchewan, 51 Campus Drive, Saskatoon, Saskatchewan, Canada; WorleyParsons Ltd., 540 12 Ave SW, Calgary, AB T2R 0H4, Canada
Recommended Citation:
Amichev B.Y.,Bailey B.E.,Van Rees K.C.J.. White spruce (Picea glauca) structural root system development and symmetry influenced by disc trenching site preparation[J]. Forest Ecology and Management,2014-01-01,326