TruaxGagnonFortierEtAl2012

Référence

Truax, B., Gagnon, D., Fortier, J., Lambert, F. (2012) Yield in 8 year-old hybrid poplar plantations on abandoned farmland along climatic and soil fertility gradients. Forest Ecology and Management, 267:228-239. (URL )

Résumé

We evaluate, after 8 growing seasons, the effect of climate and soil characteristics on the biomass and volume yields of eight hybrid poplar plantations established on abandoned farmland sites, all planted during the same week, with the same five unrelated clones (D × N, T × D, N × M, DN × M, and M × B hybrids), and with the same silvicultural treatments. These plantations are located along an elevation (from 80 to 450 m), or climatic gradient, but also along an edaphic gradient (from rich bottomlands to poorer hillside slopes). The largest effect that affected poplar volume yield was the Site effect (F ratio = 134), followed by the Clone effect (F ratio = 17), both effects being highly significant (p < 0.001). However, a highly significant Site × Clone interaction suggests that the unrelated hybrid poplar clones used in this study respond differently to the environmental gradients. The large Site effect was expressed by hybrid poplar yield (5 clones mean) being as high as 22.4 m3 ha–1 year–1 in the bottomlands of the Bedford site, where all clones reached their highest yield, and as low as 1.1 m3 ha–1 year–1 on the poorer soils of hill slopes at Stornoway. Only one clone was the highest yielding at all sites, the N × M hybrid.

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@ARTICLE { TruaxGagnonFortierEtAl2012,
    AUTHOR = { Truax, B. and Gagnon, D. and Fortier, J. and Lambert, F. },
    TITLE = { Yield in 8 year-old hybrid poplar plantations on abandoned farmland along climatic and soil fertility gradients },
    JOURNAL = { Forest Ecology and Management },
    YEAR = { 2012 },
    VOLUME = { 267 },
    PAGES = { 228-239 },
    MONTH = { mar },
    ABSTRACT = { We evaluate, after 8 growing seasons, the effect of climate and soil characteristics on the biomass and volume yields of eight hybrid poplar plantations established on abandoned farmland sites, all planted during the same week, with the same five unrelated clones (D × N, T × D, N × M, DN × M, and M × B hybrids), and with the same silvicultural treatments. These plantations are located along an elevation (from 80 to 450 m), or climatic gradient, but also along an edaphic gradient (from rich bottomlands to poorer hillside slopes). The largest effect that affected poplar volume yield was the Site effect (F ratio = 134), followed by the Clone effect (F ratio = 17), both effects being highly significant (p < 0.001). However, a highly significant Site × Clone interaction suggests that the unrelated hybrid poplar clones used in this study respond differently to the environmental gradients. The large Site effect was expressed by hybrid poplar yield (5 clones mean) being as high as 22.4 m3 ha–1 year–1 in the bottomlands of the Bedford site, where all clones reached their highest yield, and as low as 1.1 m3 ha–1 year–1 on the poorer soils of hill slopes at Stornoway. Only one clone was the highest yielding at all sites, the N × M hybrid. },
    ISSN = { 0378-1127 },
    KEYWORDS = { Afforestation, Volume, Biomass, Elevation, Phosphorus availability, South-eastern Canada },
    OWNER = { Luc },
    TIMESTAMP = { 2012.01.11 },
    URL = { http://www.sciencedirect.com/science/article/pii/S0378112711007432 },
}

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