Estimating Tree Biomass Carbon And Nitrogen In Two Vegetation Control Treatments In An 11 Year Old Douglas Fir Plantation On A Highly Productive Site PDF Download
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| Author | : Warren D. Devine |
| Publisher | : |
| Total Pages | : 29 |
| Release | : 2013 |
| Genre | : Douglas fir |
| ISBN | : |
Download Estimating Tree Biomass, Carbon, and Nitrogen in Two Vegetation Control Treatments in an 11-year-old Douglas-fir Plantation on a Highly Productive Site Book in PDF, ePub and Kindle
We sampled trees grown with and without competing vegetation control in an 11-year-old Douglas-fir (Pseudotsuga menziesii var. menziesii (Mirb.) Franco) plantation on a highly productive site in southwestern Washington to create diameter- based allometric equations for estimating individual-tree bole, branch, foliar, and total aboveground biomass. We used these equations to estimate per-hectare aboveground biomass, nitrogen (N), and carbon (C) content, and compared these results to (1) estimates based on biomass equations published in other studies, and (2) estimates made using the mean-tree method rather than allometric equations. Component and total-tree biomass equations were not influenced by the presence of vegetation control, although per-hectare biomass, C, and N estimates were greater where vegetation control was applied. Our biomass estimates differed from estimates using previously published biomass equations by as much as 23 percent. When using the mean-tree biomass estimation approach, we found that incorporating a previously published biomass equation improved accuracy of the mean-tree diameter calculation.
| Author | : |
| Publisher | : |
| Total Pages | : 278 |
| Release | : 1978 |
| Genre | : Forests and forestry |
| ISBN | : |
Download Research Paper PNW. Book in PDF, ePub and Kindle
| Author | : Erika J. Knight |
| Publisher | : |
| Total Pages | : 37 |
| Release | : 2013 |
| Genre | : Coarse woody debris |
| ISBN | : |
Download Harvest Intensity and Competing Vegetation Control Have Little Effect on Soil Carbon and Nitrogen Pools in a Pacific Northwest Douglas-fir Plantation Book in PDF, ePub and Kindle
Increasing demand for timber as well as current interest in the use of woody biomass for energy and chemical production may result in higher quantities of organic matter removal from plantation forests than currently occurs during harvesting. Two practices that can increase the yield of woody biomass from a harvest site are (1) the application of herbicides to control competing vegetation and improve crop tree growth and (2) the removal of branches and foliage (slash) in addition to the bole during harvest. The potential of these practices to change pools of soil carbon and nitrogen necessitates an evaluation of how management practices affect soil quality and carbon sequestration. In this study, soil carbon and nitrogen were measured to a depth of one meter in a 12-year-old Douglas-fir (Pseudotsuga menziesii) plantation at the Fall River Long-term Soil Productivity site in western Washington. The effects of vegetation control (bole-only harvest with versus without annual herbicide application, BO+VC vs. BO-VC) and harvest intensity (bole-only harvest with vegetation control versus total tree plus harvest with vegetation control, BO+VC vs. TTP+VC) on soil carbon and nitrogen were compared. Forest floor and mineral soil samples in six depth increments (forest floor, 0-15 cm, 15-30 cm, 30-45 cm, 45-60 cm, and 60-100 cm) were collected at 12 years following planting of seedlings. Carbon and nitrogen concentrations for the forest floor and the fraction of mineral soil
| Author | : |
| Publisher | : |
| Total Pages | : 1216 |
| Release | : 1992 |
| Genre | : Ecology |
| ISBN | : |
Download Environment Abstracts Annual Book in PDF, ePub and Kindle
This database encompasses all aspects of the impact of people and technology on the environment and the effectiveness of remedial policies and technologies, featuring more than 950 journals published in the U.S. and abroad. The database also covers conference papers and proceedings, special reports from international agencies, non-governmental organizations, universities, associations and private corporations. Other materials selectively indexed include significant monographs, government studies and newsletters.
| Author | : |
| Publisher | : |
| Total Pages | : 1064 |
| Release | : 1995 |
| Genre | : Agriculture |
| ISBN | : |
Download Agrindex Book in PDF, ePub and Kindle
| Author | : Harold Scofield Betts |
| Publisher | : |
| Total Pages | : 8 |
| Release | : 1960 |
| Genre | : Douglas fir |
| ISBN | : |
Download Douglas-fir (Pseudotsuga Menziessi) Book in PDF, ePub and Kindle
| Author | : |
| Publisher | : |
| Total Pages | : 920 |
| Release | : 1985 |
| Genre | : AGRIS (Information retrieval system) |
| ISBN | : |
Download Forestry Bibliography 1981-84: Indexes Book in PDF, ePub and Kindle
| Author | : Michail Prodan |
| Publisher | : Elsevier |
| Total Pages | : 461 |
| Release | : 2013-10-22 |
| Genre | : Mathematics |
| ISBN | : 1483156559 |
Download Forest Biometrics Book in PDF, ePub and Kindle
Forest Biometrics presents the methods of mathematical statistics and biometrics that are significant to forestry. This book explores other fields related to forestry, which are explained with the help of a large number of practical examples. Organized into 25 chapters, this book starts with an overview of the variety of data that play a significant role in forest management, including the age of trees, the damage caused by storms, the fluctuation of timber prices, bark beetle infestation, and timber volume. This text then examines the factors that are responsible for a random distribution of the values in biological experimentation. Other chapters consider the important advantages of sample surveys compared to complete enumerations, include cheaper samples, wider applicability, quick results, and greater accuracy. The final chapter deals with the factors to be considered in determining the best time for harvesting of timber. This book is a valuable resource for students, research project leaders, and practical workers.
| Author | : T. Satoo |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 160 |
| Release | : 2012-12-06 |
| Genre | : Technology & Engineering |
| ISBN | : 9400976275 |
Download Forest Biomass Book in PDF, ePub and Kindle
Lord Rutherford has said that all science is either physics or stamp collecting. On that basis the study of forest biomass must be classified with stamp collecting and other such pleasurable pursuits. Japanese scientists have led the world, not only in collecting basic data, but in their attempts to systematise our knowledge of forest biomass. They have studied factors affecting dry matter production of forest trees in an attempt to approach underlying phYf'ical principles. This edition of Professor Satoo's book has been made possible the help of Dr John F. Hosner and the Virginia Poly technical Institute and State University who invited Dr Satoo to Blacksburg for three months in 1973 at about the time when he was in the final stages of preparing the Japanese version. Since then the explosion of world literature on forest biomass has continued to be fired by increasing shortages of timber supplies in many parts of the world as well as by a need to explore renewable sources of energy. In revising the original text I have attempted to maintain the input of Japanese work - much of which is not widely available outside Japan - and to update both the basic information and, where necessary, the conclusions to keep them in tune with current thinking. Those familiar with the Japanese original will find Chapter 3 largely rewritten on the basis of new work - much of which was initiated while Dr Satoo was in Blacksburg.
| Author | : |
| Publisher | : |
| Total Pages | : 800 |
| Release | : 2002 |
| Genre | : Forests and forestry |
| ISBN | : |
Download Canadian Journal of Forest Research Book in PDF, ePub and Kindle
