Showing papers in "Forest Ecology and Management in 1997"

TL;DR: In this article, a stand growth model, called 3-PG (Use of Physiological Principles in Predicting Growth), calculates total carbon fixed (gross primary production; PG) from utilizable, absorbed photosynthetically active radiation (φp.a.u.), obtained by correcting the photosyntically active radiation absorbed by the forest canopy for the effects of soil drought, atmospheric vapour pressure deficits and stand age.

TL;DR: A comprehensive review of the biomass equations for 65 North American tree species is presented, a unique source of equations that can be used to estimate tree biomass and/or to study the variation of biomass components for a tree species.

TL;DR: The use of tree plantations to catalyze restoration of degraded forests and lands in the tropics was addressed at a symposium in Washington DC in June 1996 as discussed by the authors, where the conclusions and suggestions for future research to develop appropriate management options are reported.

TL;DR: The characteristics of animal seed dispersal relevant to tropical forest restoration efforts and their management implications are reviewed and their implications are discussed.

TL;DR: In this article, the authors suggest that reestablishment of tree species richness on degraded sites with arrested succession could be facilitated through plantings of tree monocultures. But, the authors do not consider the effects of such monocultural plantations on the ecology of the plantations.

TL;DR: In this article, a gap-based approach for study response to silvicultural manipulation is proposed, which aids development of cutting prescriptions that maintain functional mature or old-growth conditions; refines and extends our understanding of how biological structures, organisms and ecosystem processes are affected by fine-scale variation within stands; and leads to development of novel silviculture systems that meet timber production objectives, without compromising ecosystem management principles.

TL;DR: A flatwoods longleaf pine wiregrass ecosystem, which regenerated naturally following wildfire in 1942, on the Coastal Plain of southern Georgia was treated over a period of four decades with prescribed fire at annual, biennial and triennial intervals during the winter dormant season as discussed by the authors.

TL;DR: In this article, the authors present a method in which fundamental knowledge of natural ecosystem dynamics of the southern boreal forest may be used as a basis for a new silvicultural approach aimed at maintaining biodiversity and long-term ecosystem productivity under management.

TL;DR: In this article, the authors present an unweighted mean basic density of 0.65 (range 0.14-1.21) for 268 species of trees in the Amazonian forests.

TL;DR: In this paper, the authors present management options for three major site types in boreal Sweden which mimic natural dynamics better than traditional forestry, including Scots pine forest, deciduous or Norway spruce dominated forest, and Norway Spruce forest regenerated by so-called gap dynamics.

TL;DR: In this article, the authors evaluated the health and productivity of Sweden's forests by posing a number of specific questions, and synthesized information from the extensive research in Sweden on N deposition, fertilization and forest growth.

TL;DR: While the reforestation program has been successful in creating a favorable environment for regeneration of a native primary Forest species, further management interventions, such as enrichment plantings, may be required to accelerate regeneration of large-seeded primary forest species.

TL;DR: In this article, the authors present an overview of the geologic origin and development of hardwood sites, species-site relationships and the natural patterns of ecological succession on those sites, and the implications of that information for forest management.

TL;DR: In this paper, the authors predict the occurrence of pre-settlement refugia using physiographic and topographic variables, such as topography, elevation, aspect, slope, and vegetation attributes.

TL;DR: In this article, the authors measured the rates of litter decomposition and N mineralization in an old growth forest and in adjacent areas harvested by clearcut, patch cut, shelterwood and green tree retention systems.

TL;DR: In this paper, the STRUGEN stand structure generator was designed for the modeling and reproduction of spatial stand structures, which was used for the investigation of 53 mixed beech-larch stands in Lower Saxony.

TL;DR: Understorey colonization by native species was assessed in timber plantations on the Atherton Tablelands in North Queensland, Australia, with results indicating that tree species richness and the number of species regarded as `late successional' increased significantly with age for the two species where a range of ages were measured.

TL;DR: In this article, the effects of clearcutting and shelterwood cutting of mature Norway spruce peatland forests were compared regarding the effects on the forest flora, and it was concluded that shelterwood regimes may preserve species preferring shaded and moist conditions, whereas those species decreased after clearcutting.

TL;DR: This article examined quantities and distribution of aboveground biomass density (AGBD, Mg ha−1) of US eastern hardwood forests and assessed their biological potential for continued biomass accumulation in the future.

TL;DR: Watershed 7, a southwest-facing watershed in the Coweeta Basin, western North Carolina, USA, was clearcut in 1977 and is apparently in a transition state between early and late successional species abundance.

TL;DR: In the tropics, the process of plant colonisation may be accelerated by establishing combinations of fleshy fruited native plant species from different stages of a normal forest succession, which attract seed dispersing birds and mammals.

TL;DR: In this paper, the authors provide a quantitative description of the tree invasion process at a landscape scale using historical aerial photography, image processing and geographic information systems (GIS) approaches.

TL;DR: It is demonstrated that the impact of logging on trees can be substantially reduced by strict supervision and planning of logging operations and limit of harvesting intensity, which should not exceed 80 m3 ha−1.

TL;DR: In this paper, the long term impacts of biomass programs and projects depend mainly on ensuring income generation, environmental sustainability, flexibility and replicability, while taking account of local conditions and providing multiple benefits, which is an important attribute of agroforestry type systems.

TL;DR: Regeneration under tropical plantations has been suggested as a route to facilitate the restoration of natural forests on degraded deforested lands in the tropics and with some plantation species there seems to be a true potential to facilitate a more rapid restoration of a forest community than would occur naturally.

TL;DR: The study showed no conclusive evidence of any change in P cycling in mixed stands at 33 months after planting, suggesting the need for inputs of P as fertilizer to remove any P deficiency and enhance N fixation by acacia.

TL;DR: In this paper, understorey vegetation was sampled in plantation stands of different age of Pinus patula, and old stands of P. elliottii, P. taeda and Eucalyptus saligna, growing on the forest margin.

TL;DR: In this article, three general methods for construction of site index equations (the guide curve method, the parameter prediction method and the difference equation method) and 13 growth functions were tested on data from permanent plots in 156 Scots pine ( Pinus sylvestris ) stands.

TL;DR: The results indicate that except for the breast height diameter-height relationship of stone pine and the taper rates of Norway spruce and larch, site influences can be neglected because they unduly complicate empirical assumptions for a small gain in predictability.