SerraOpioKhasa2014

Référence

Serra, R., Opio, C., Khasa, D.P. (2014) Sheep vegetation management for controlling competing vegetation in young conifer plantations in the central interior of British Columbia, Canada. Agroforestry Systems, 88(4):569-578. (Scopus )

Résumé

In British Columbia, sheep vegetation management (SVM) is a relatively new technique; thus, limited data are available for examining its benefits on conifer growth. We collected field data from young mixed-conifer plantations of lodgepole pine (Pinus contorta) and hybrid spruce (Picea glauca × P. engelmannii) in blocks which had been grazed in 2005 and 2006 as well as from ungrazed blocks. Our main objective was to determine if sheep grazing had a significant effect on the growth of hybrid spruce. We measured stem diameter at 15 cm height above the root collar (D15) and cumulative internodal length (IL). Cumulative IL was calculated from the node corresponding to the year 2002-2010 (positions 2-10). The height to diameter ratio (height to the base of the leader (position 10)/D15; HDR) was calculated to determine if seedlings prioritized growth in terms of height or diameter. There was no significant grazing treatment effect on D15 and HDR when compared to the control treatment; however IL was significantly affected after the second grazing treatment in 2006 (position 6) and became increasingly important with time (positions 7-10). Based on our results, we suggest that SVM could be an effective method for controlling competing vegetation and thus, increase annual tree growth for areas with similar site characteristics as those found within the plantations sampled. © 2014 Springer Science+Business Media Dordrecht.

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@ARTICLE { SerraOpioKhasa2014,
    AUTHOR = { Serra, R. and Opio, C. and Khasa, D.P. },
    TITLE = { Sheep vegetation management for controlling competing vegetation in young conifer plantations in the central interior of British Columbia, Canada },
    JOURNAL = { Agroforestry Systems },
    YEAR = { 2014 },
    VOLUME = { 88 },
    PAGES = { 569-578 },
    NUMBER = { 4 },
    NOTE = { cited By (since 1996)0 },
    ABSTRACT = { In British Columbia, sheep vegetation management (SVM) is a relatively new technique; thus, limited data are available for examining its benefits on conifer growth. We collected field data from young mixed-conifer plantations of lodgepole pine (Pinus contorta) and hybrid spruce (Picea glauca × P. engelmannii) in blocks which had been grazed in 2005 and 2006 as well as from ungrazed blocks. Our main objective was to determine if sheep grazing had a significant effect on the growth of hybrid spruce. We measured stem diameter at 15 cm height above the root collar (D15) and cumulative internodal length (IL). Cumulative IL was calculated from the node corresponding to the year 2002-2010 (positions 2-10). The height to diameter ratio (height to the base of the leader (position 10)/D15; HDR) was calculated to determine if seedlings prioritized growth in terms of height or diameter. There was no significant grazing treatment effect on D15 and HDR when compared to the control treatment; however IL was significantly affected after the second grazing treatment in 2006 (position 6) and became increasingly important with time (positions 7-10). Based on our results, we suggest that SVM could be an effective method for controlling competing vegetation and thus, increase annual tree growth for areas with similar site characteristics as those found within the plantations sampled. © 2014 Springer Science+Business Media Dordrecht. },
    AUTHOR_KEYWORDS = { Conifer plantations; Growth response; Hybrid spruce; Sheep vegetation management; Silvopastoralism },
    CODEN = { AGSYE },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1007/s10457-014-9701-x },
    ISSN = { 01674366 },
    KEYWORDS = { Coniferophyta; Ovis aries; Picea; Picea glauca; Pinus contorta },
    SOURCE = { Scopus },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-84905594135&partnerID=40&md5=1e061cae2a8010ea7addc93ab3bad8e0 },
}

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