نتایج جستجو برای: shelterwood cutting

تعداد نتایج: 40411  

2004
James M. Guldin James P. Barnett

Automated weather stations collected microclimatic data over a 4.75-year period in six reproduction cutting treatments—a clearcut, two shelterwoods, a group selection, a single-tree selection, and an unmanaged control—in shortleaf pine stands in the Ouachita Mountains of west-central Arkansas. Treatment means for air temperature at 15 cm, soil temperature, solar radiation, and windspeed were gr...

1999
JEFFREY R. WATERS

We compared abundances of seven species of forest rodents among three types of fir (Abies concolor and A. magnifica) forest: unlogged old-growth, unlogged mature, and shelterwood-logged old-growth. Small mammals were livetrapped during summers 1991 and 1992 in four grids within each type of forest; grids were located in the Lassen National Forest in northeastern California. Shelterwood-logged f...

2017
Miguel Montoro Girona Sergio Rossi Jean-Martin Lussier Denis Walsh Hubert Morin

Forest ecosystem management heads towards the use of partial cuttings. However, the wide variation in growth response of residual trees remains unexplained, preventing a suitable prediction of forest productivity. The aim of the study was to assess individual growth and identify the driving factors involved in the responses of residual trees. Six study blocks in even-aged black spruce [Picea ma...

2015
Marcella A. Windmuller-Campione

Within the Central Rocky Mountains, spruce beetle populations have the potential to rapidly transition from endemic to epidemic levels in the spruce-fir (Engelmann spruce and subalpine fir) forest type. Conventional management has focused on creating resistance to spruce beetle outbreaks by manipulating the overstory density and composition. Three silvicultural treatments, single tree selection...

2009
Eben Goodale Punit Lalbhai Uromi M. Goodale P.M.S. Ashton

Forest regenerationmethods such as shelterwood treatments have been shown to substantially increase the diversity of bird species, specifically of species that prefer early seral forests, now rare in the eastern United States. Stand improvement techniques such as thinnings have also been found to increase avian diversity under some conditions. A sustainably managed forest, however, must simulta...

Journal: :Croatian Journal of Forest Engineering 2022

The Mediterranean forest region has been exposed to anthropogenic impacts for centuries, and the constant biotic abiotic factors, together with increasing climate change, have hindered proper management of ecosystems. This study presents results multiyear, systematic, specific practical monitoring conversion holm oak coppices using principles shelterwood system. It also growth development dynam...

Journal: :Metsanduslikud Uurimused 2022

Abstract The article provides an overview of the experience using shelterwood systems in Estonia and methodological aspects their economic assessment. methodology is tested with calculations made on management alternatives pine ( Pinus sylvestri s L.) stand Rhodococcum site type. Based Estonian forest rules results previous silvicultural studies, models were elaborated for different types harve...

2001
Prince George

• Extension • Research • Consulting • PHOTO 1. Boreal mixedwood stand where both aspen and white spruce are within the dominant and co-dominant crown classes. Mixed species stands provide options for creating a wide variety of future stand conditions. Forest managers are increasingly being asked to consider and apply a diversity of silviculture systems to address the variety of social, economic...

Journal: :Forests 2021

This study compares the amount of available biomass for wild herbivores (red deer (Cervus elaphus L.), roe (Capreolus capreolus and hare (Lepus europaeus Pallas)) depending on three different types forest silvicultural systems—presented using example beech spruce stands in wintertime. During winter period, provided ten times more than beech. However, metabolizable energy, 7.38 MJ/kg average, wh...

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