气候变化领域集成服务门户(CCPortal): Pre-commercial thinning enhances competitive traits of boreal ericaceous shrubs and reduces soil fertility

CCPortal

DOI	10.1016/j.foreco.2019.117801
	Pre-commercial thinning enhances competitive traits of boreal ericaceous shrubs and reduces soil fertility
	Reicis K.; Bradley R.L.; Joanisse G.; Houle D.; Tremblay S.; Barrette M.; Wotherspoon A.
发表日期	2020
ISSN	0378-1127
卷号	458
英文摘要	Boreal ericaceous shrubs, such as Kalmia angustifolia, have evolved various traits allowing them to interfere with the growth of conifer trees. These include the ability to spread through rhizomatous growth and to produce high amounts of tannins that interfere with soil N cycling. We examined how pre-commercial thinning (PCT) of young black spruce (Picea mariana) stands, a common silvicultural practice, increases the aboveground and belowground spread of various ericaceous shrubs, the chemical quality of leaves and litter, as well as soil nitrogen cycling. We compared these effects in relatively cool-moist and relatively warm-dry climates. Within the warm-dry climate, we also compared the effects of PCT on fertile clay and on nutrient-poor till deposits. The total cover of ericaceous shrubs was higher in PCT than in control plots in all three site types. On nutrient poor till deposits (in both climates), the current-year rhizome length and specific rhizome mass of K. angustifolia were higher in PCT than in control plots. Soil mineralizable NH4 +-N was lower under patches of K. angustifolia than under patches of feather moss (Pleurozium schreberi). Across all 24 plots, canopy openness had a positive relationship with ericaceous shrub cover, current-year rhizome length, foliar tannins and phenolic concentrations. Although PCT might increase tree growth in the short-term, its positive effects on ericaceous shrubs increases the risk of conifer seedling growth check when the next clearcut harvest occurs, especially in cool moist climates and on nutrient poor soil deposits. © 2019 Elsevier B.V.
英文关键词	Black spruce; Climate; Foliar tannins; Geological soil parent material; Pre-commercial thinning; Rhizomes
语种	英语
scopus关键词	Clay deposits; Deposits; Flavonoids; Nutrients; Soils; Tannins; Black spruce; Climate; Parent materials; Pre-commercial thinning; Rhizomes; Forestry; boreal forest; coniferous forest; leaf; parent material; rhizome; secondary metabolite; shrub; soil fertility; thinning; Control Systems; Deposits; Growth; Leaves; Shrubs; Soil; Thinning; Trees; Bryophyta; Coniferophyta; Kalmia angustifolia; Picea mariana; Pleurozium schreberi
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/155555
作者单位	Département de Biologie, Université de Sherbrooke, Québec, J1K 2R1, Canada; Centre d'enseignement et de recherche en foresterie de Sainte-Foy Inc., 2440 chemin Ste-Foy, Québec, G1V 1T2, Canada; Ministère des Forêts, de la Faune et des Parcs, 2700 rue Einstein, Québec, G1P 3W8, Canada
推荐引用方式 GB/T 7714	Reicis K.,Bradley R.L.,Joanisse G.,et al. Pre-commercial thinning enhances competitive traits of boreal ericaceous shrubs and reduces soil fertility[J],2020,458.
APA	Reicis K..,Bradley R.L..,Joanisse G..,Houle D..,Tremblay S..,...&Wotherspoon A..(2020).Pre-commercial thinning enhances competitive traits of boreal ericaceous shrubs and reduces soil fertility.Forest Ecology and Management,458.
MLA	Reicis K.,et al."Pre-commercial thinning enhances competitive traits of boreal ericaceous shrubs and reduces soil fertility".Forest Ecology and Management 458(2020).