Results 21 to 30 of about 1,660,917 (306)

Rehabilitation of Understocked Loblolly-Shortleaf Pine Stands—I. Recently Cutover Natural Stands [PDF]

open access: yesSouthern Journal of Applied Forestry, 1998
Abstract Two loblolly-shortleaf pine (Pinus taeda L.-P. echinata Mill.) stands were cut to stocking levels of 10, 20, 30, 40, and 50% to simulate recently cutover, understocked, uneven-aged stands. Number of trees ranged from 38 per acre for 10% stocking to 213 per acre for 50% stocking; comparable total basal areas were 4 and 16 ft²/ac,
James B. Baker, Michael G. Shelton
openaire   +1 more source

Stand-level drivers of tree-species diversification in Mediterranean pine forests after abandonment of traditional practices [PDF]

open access: yes, 2015
The progressive abandonment of traditional forest management over the last few decades has led to significant densification processes in most Mediterranean pine stands.
Coll Mir, Lluís   +2 more
core   +1 more source

Approximating predictive probabilities of Gibbs-type priors [PDF]

open access: yes, 2020
Gibbs-type random probability measures, or Gibbs-type priors, are arguably the most "natural" generalization of the celebrated Dirichlet prior. Among them the two parameter Poisson-Dirichlet prior certainly stands out for the mathematical tractability ...
Arbel, Julyan, Favaro, Stefano
core   +4 more sources

Ecological functions of forest stands in urbanized environment of Moscow

open access: yesRUDN Journal of Agronomy and Animal Industries, 2019
In urban forests, stock production is not the main function of stands. Carbon sequestration, the release of oxygen and phytoncides, dust precipitation, and changing wind conditions et al. are the main environmental functions.
Nikolay Nikolaevich Dubenok   +2 more
doaj   +1 more source

Ukrainian plain oak forests and their natural regeneration

open access: yesMetsanduslikud Uurimused, 2019
Changes in the areas and stock volumes of oak stands were analyzed within the six administrative regions in the plain area of Ukraine, based on forest management data (subcompartment database) as of 2001 and 2016.
Tkach Viktor   +4 more
doaj   +1 more source

Horizontal structure of forest stands on permanent research plots in the Krkonoše Mts. and its development

open access: yesJournal of Forest Science, 2010
Horizontal structure on 38 permanent research plots is described for juvenile growth and developmental phases (natural seeding, advance growth, plantations) and tree layer of a parent stand.
D. Zahradník   +4 more
doaj   +1 more source

Carbon accretion in unthinned and thinned young-growth forest stands of the Alaskan perhumid coastal temperate rainforest. [PDF]

open access: yes, 2015
BACKGROUND: Accounting for carbon gains and losses in young-growth forests is a key part of carbon assessments. A common silvicultural practice in young forests is thinning to increase the growth rate of residual trees. However, the effect of thinning on
DAmore, David   +4 more
core   +1 more source

Wood density variation in Serbian Spruce: A comparative study of natural stands and plantations

open access: yesGlasnik Šumarskog Fakulteta Univerziteta u Banjoj Luci
Serbian spruce (Picea omorika Pančić/Purkyně) is a Tertiary relict and an endemic species of the Balkan Peninsula, whose limited distribution range and pronounced ecological specificity make the study of its physical properties particularly important ...
Danijela Petrović   +4 more
doaj   +1 more source

Natural recovery of genetic diversity by gene flow in reforested areas of the endemic Canary Island pine, Pinus canariensis

open access: yes, 2007
The endemic pine, Pinus canariensis, forms one of the main forest ecosystems in the Canary Islands. In this archipelago, pine forest is a mosaic of natural stands (remnants of past forest overexploitation) and artificial stands planted from the 1940's ...
Adams   +34 more
core   +4 more sources

Strict Forest Reserve Research in the Margin of the Carpathians, the Vár-hegy Case-Study [PDF]

open access: yes, 2013
Sixteen forest reserves are situated in the northern part of Hungary which belongs to the Carpathian region according to EURAC delimitation (Ruffini et al. 2006). These Hungarian forest reserves expand the natural forest remnant/forest reserve net of the
A Borhidi   +20 more
core   +1 more source

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