نتایج جستجو برای: silviculture
تعداد نتایج: 667 فیلتر نتایج به سال:
A major challenge for foresters in the future will be issues related to global change. Global change expresses itself in a variety of ways, depending on regional vegetation and climate patterns, small-scale topographic differences, tree species, and stand development stages. Using silviculture as an example, the variety of steps linking global change—as a general concept—and actual management d...
• 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...
A randomized sample of 250 loblolly (Pinus taeda L.) and shortleaf (Pinus echinata Mill.) pine ring counts was collected from the Good and Poor Farm Forestry compartments on the Crossett Experimental Forest. These mature, pine-dominated stands have been managed using uneven-aged silviculture since 1937. Our sample shows that both of these compartments have many different age classes although fe...
Landscape in the southern United States changed dramatically during the 1930s and the following decades when massive agricultural and abandoned logging lands were converted to forest lands through natural restoration and silviculture. The impacts of this forest restoration on hydrology were investigated in this study by conducting numerical experiments with a regional climate model. Climatic an...
Abstract Understanding structurally complex boreal stands is crucial for designing ecosystem management strategies that promote forest resilience under global change. However, current practices lead to the homogenization and simplification of structures in biome. In this chapter, we illustrate two options managing productive resilient forests: (1) two-aged mixed-species forests; (2) multi-aged,...
We propose some ideas for an adaptive silviculture in the Mediterranean biogeographic region that could assist shaping forests which are less vulnerable to extreme climatic events, such as those drought and heat waves expected be more intense frequent future. discuss about silvicultural approaches would aim to: regulate competition density-dependent effects; enhance functional diversity; increa...
Non-crop vegetation on regenerating forest lands is often viewed as being uniformly detrimental to the establishment and growth of commercial tree species. This assumption is ingrained in our traditional concepts of land stewardship and efficient commodity production. The “freegrowing” designation for a regenerated stand defines the extent of basic silviculture for which forest licensees are re...
The application of different modern logging systems depends on the silvicultural aims and methodologies. Depending upon these specifications the appropriate technique must be selected. This is the basic condition, which leads to a specific logging system in Central European and especially in German forestry. In the following an overview is to be given upon the different applications of full-mec...
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