Author : Steve Bédard
Publisher :
ISBN 13 : 9782550803263
Total Pages : 17 pages
Book Rating : 4.8/5 (32 download)
Book Synopsis Effets après 5 ans de l'éclaircie commerciale et de l'amendement du sol sur la production de jeunes érablières en Estrie by : Steve Bédard
Download or read book Effets après 5 ans de l'éclaircie commerciale et de l'amendement du sol sur la production de jeunes érablières en Estrie written by Steve Bédard and published by . This book was released on 2018 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: Young even-aged stands dominated by sugar maple (Acer saccharum Marsh.) cover large parts of southern Quebec (Canada). Although their geographical position makes these stands suitable for more intensive silvicultural scenarios, little is known about the effects of treatments such as commercial thinning and soil amendment in these stands. Thus, we established an experiment in stands dominated by sugar maple and yellow birch (Betula alleghaniensis Britt.) located in the Estrie region. The design includes 5 treatments: an untreated control (mean basal area: 21.5 m2·ha−1), a moderate and a heavy commercial thinning (mean residual basal areas: 13.1 and 11.6 m2·ha−1, respectively), and the same two thinning intensities combined with soil amendment (mean residual basal areas: 13.9 and 11.4 m2·ha−1, respectively). The soil amendment was composed of lime mud (8 t·ha−1) and paper biosolids (15 t·ha−1). After 5 years, net periodic annual increment, calculated on the basis of stand basal area, was significantly greater in the thinned treatments than in the untreated control. The increase in production was caused by reduced mortality, increased ingrowth and greater tree diameter growth in the thinned treatments. Trees in the 10-18 cm class of diameter at breast height (DBH) and located within 5 m of the center of the logging trails showed the largest growth increase. No significant difference was observed between thinning treatments with or without soil amendment for tree diameter growth during the study period.
