Viewing forests from below: fine root mass declines relative to leaf area in aging lodgepole pine stands
نویسندگان
چکیده
منابع مشابه
Fine root dynamics in lodgepole pine and white spruce stands along productivity gradients in reclaimed oil sands sites
Open-pit mining activities in the oil sands region of Alberta, Canada, create disturbed lands that, by law, must be reclaimed to a land capability equivalent to that existed before the disturbance. Re-establishment of forest cover will be affected by the production and turnover rate of fine roots. However, the relationship between fine root dynamics and tree growth has not been studied in recla...
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Alternative silvicultural treatments such as thinning can be used to restore forested watersheds and reduce wildfire hazards, but the hydrologic effects of these treatments are not well defined. We evaluated the effect of two shelterwood-with-reserve silvicultural prescriptions, one leaving residual trees evenly distributed (SE) and the second leaving residual trees in groups (SG), both with 50...
متن کاملFine root biomass and production in Scots pine stands in relation to stand age.
We determined fine root biomass and production of 15-, 35- and 100-year-old Scots pine (Pinus sylvestris L.) stands during three growing seasons. Fine roots were sampled by the soil core method. Mean (+/- SE) annual fine root biomass of Scots pine in the 15-, 35- and 100-year-old stands was 220 +/- 25, 357 +/- 21 and 259 +/- 26 g m(-2), respectively. Fine root biomass of the understory vegetati...
متن کاملCHEMICAL ECOLOGY Dose-Dependent Pheromone Responses of Mountain Pine Beetle in Stands of Lodgepole Pine
We conducted seven behavioral choice tests with Lindgren multiple-funnel traps in stands of mature lodgepole pine in British Columbia, from 1988 to 1994, to determine the dosedependent responses of the mountain pine beetle, Dendroctonus ponderosae Hopkins, to its pheromones.Amultifunctionaldose-dependent responsewasexhibitedbyD.ponderosae to thepheromones cisand trans-verbenol in areas with low...
متن کاملLeaf area index and canopy strati cation in Scots pine ( Pinus sylvestris L . ) stands
In order to assess the contribution of each layer to eVective leaf area index (LAI) in strati ed forest canopies, two Scots pine stands were selected in Haguenau forest, Alsace, France. One stand, 80 years old, had a sparse tree layer and a dense herb layer. The other stand, 50 years old, had a closed tree layer and dense herb and shrub layers. Hemispherical photographs, taken at 10-metre inte...
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ژورنال
عنوان ژورنال: Oecologia
سال: 2016
ISSN: 0029-8549,1432-1939
DOI: 10.1007/s00442-016-3621-6