Download or read book Growth Response to Thinning of Larger Trees in Older Second growth Northern Hardwood Forests written by Matthew Thomas Singer and published by . This book was released on 1995 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Simulation of the Development and Restoration of Old growth Northern Hardwood Forest written by Jungkee Choi and published by . This book was released on 1998 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fertilizing and Thinning Northern Hardwoods in the Lake States written by Douglas M. Stone and published by . This book was released on 1977 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dominant tree Thinning in New England Northern Hardwoods a Second Look written by William B. Leak and published by . This book was released on 2015 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: A dominant-tree thinning was conducted in 2003 in a 69-year-old even-aged northern hardwood stand, clearcut in about 1935, where a precommercial thinning study had been conducted in 1959. The 2003 commercial thinning concentrated on the removal of the early maturing, short-lived paper birch and aspen, the largest-diameter trees in the stand (hence the term "dominant-tree thinning"). Diameter growth rates after thinning, up to about 6 years per inch over the following 12 years, were acceptable although not greatly different from the unthinned plots. Basal area growth response was highly acceptable after thinning: about 2.3 ft2 per acre per year. Annual basal area growth was about negative 0.9 ft2 per acre on the unthinned plots. Understory development of beech and shrub species was dense under the thinned plots, and will require treatment/removal during the regeneration phase.

Download or read book Precommercial Crop tree Thinning in a Mixed Northern Hardwood Stand written by Nancy G. Voorhis and published by . This book was released on 1990 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effectiveness of precommercial crop tree thinning was investigated by thinning crop trees of paper birch, yellow birch, and sugar maple to two intensity levels at 8 years of age. Analysis of covariance on post thinning growth measurements taken 7 years later indicated a significant increase in diameter and crown-diameter growth, with the pattern of response varying by species. The study suggests that a uniform crop-tree thinning treatment for a stand composed of species with varying tolerances will rarely produce the best response for all the species.

Download or read book Fifteen year Results from Six Cutting Methods in Second growth Northern Hardwoods written by Gayne G. Erdmann and published by . This book was released on 1973 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Volume Tables for Second growth Northern Hardwood Forests in Northeastern Wisconsin written by Gayne G. Erdmann and published by . This book was released on 1982 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Managing Northern Hardwoods in the Lake States written by Carl Arbogast and published by . This book was released on 1953 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Accelerating the Development of Old growth Characteristics in Second growth Northern Hardwoods written by Karin S. Fassnacht and published by . This book was released on 2015 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: Active management techniques that emulate natural forest disturbance and stand development processes have the potential to enhance species diversity, structural complexity, and spatial heterogeneity in managed forests, helping to meet goals related to biodiversity, ecosystem health, and forest resilience in the face of uncertain future conditions. There are a number of steps to complete before, during, and after deciding to use active management for this purpose. These steps include specifying objectives and identifying initial targets, recognizing and addressing contemporary stressors that may hinder the ability to meet those objectives and targets, conducting a pretreatment evaluation, developing and implementing treatments, and evaluating treatments for success of implementation and for effectiveness after application. In this report we discuss these steps as they may be applied to second-growth northern hardwood forests in the northern Lake States region, using our experience with the ongoing managed old-growth silvicultural study (MOSS) as an example. We provide additional examples from other applicable studies across the region.

Download or read book Prediction of Tree Growth and Gap Closure Rates After Selective Cutting in Second growth Northern Hardwood Forests written by William Graham Cole and published by . This book was released on 1991 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Quality Response of 29 year old Even aged Central Hardwoods After Thinning written by David L. Sonderman and published by . This book was released on 1984 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Resultaten van onderzoek na 6 jaar groei bij verschillende standdichtheden

Download or read book Long term Stand Development and Demographic Sustainability of Tree Populations in Northern Hardwood Forests written by and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: An understanding of trajectories in long-term forest development is essential for examining several fundamental issues in forest ecology and management. Long-term forest development has important implications for issues as diverse as forest productivity, carbon storage, biological diversity, and ecological forestry methods. While much has been learned from studies of old-growth forests, a limitation is that these have necessarily been brief snapshots of species composition and forest structure at one point in time from which accurate trends are difficult to infer. The overarching themes of this dissertation are the long-term trajectory of forest development and the impact of the historic natural disturbance regime on that trajectory. Specific objectives were: (1) to quantify long-term trends in above-ground tree biomass and stand structure in northern hardwood forests, and effects of the natural disturbance regime, (2) to estimate the frequency of structural stand stages, along with residence times and transition rates among stages, under several disturbance regimes, and (3) to develop a quantitative approach to evaluating demographic sustainability of tree populations under several conditions, including those of restricted recruitment. Computer simulation with the CANOPY model was used to clarify long-term trends. However, to the extent possible, these model predictions were verified against available field data, including an extensive field survey and a 30-year record of change on permanent plots in the Porcupine Mountains Wilderness State Park. Major conclusions from this work were: (1) The Bormann-Likens hypothesis of a peak in biomass followed by a decline to a lower level was largely supported by both simulation and field data. The asymptotic biomass trend documented in recent chronosequences may be a consequence of using maximum tree age to estimate stand age. (2) The majority of landscapes of old-growth northern hardwoods is occupied by non-equilibrium stands, but nearly 1/3 was also structurally indistinguishable from steady state. Individual stands were highly dynamic, spending only a few decades in any structural stage. (3) Minimum sustainable tree populations had a variable slope in their size distribution. Enforcing a shallow fixed slope in understory trees typical of those used in uneven-aged management for larger trees rendered the stand unsustainable.

Download or read book Canadian Journal of Forest Research written by and published by . This book was released on 2011 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Thinning in Young Northern Hardwoods written by David A. Marquis and published by . This book was released on 1969 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: S2The yield of even-aged hardwoods can be increased by a A program of regular thinnings. The questions are: How much increase can be expected? And what are the effects on quality? The 5-year results from a long-term study of thinning in young northern hardwoods on the Bartlett Experimental Forest in New Hampshire show that heavy thinning increased crop-tree basal-area growth by 53 percent and crop-tree diameter growth by 64 percent. There were no adverse effects on tree quality, and overall stand quality has been improved.S3.

Download or read book How Second growth Northern Hardwoods Develop After Thinning written by Robert W. Wilson and published by . This book was released on 1953 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investment in Precommercial Thinning of Northern Hardwoods written by Orris D. McCauley and published by . This book was released on 1972 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book New Findings about Old growth Forests written by and published by . This book was released on 2003 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: