What's New
- Growth Increment Area Increase
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Hits: 1
Added: October 31, 2008
Rating: Votes: 36 Rate ItThe secondary growth of trees produces unique mechanical and biological solutions to life. From shoot tip to root tip, a new growth increment is deposited on the outside of the last growth increment. This livingsheath of tissue generated (facilitated) by the last growth increment, minimizes transport resistances and pathway defense, as well as spreading out bending, twisting and gravitational loads. As new growth increments generate, some of the most interior increments are internally shed and closed-down. The geometric result is a nearly round in cross-section, longitudinally tapered, nested set of conical shaped growth increment layers.
- Estimating Weights of Branch Segments
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Hits: 1
Added: October 31, 2008
Rating: Votes: 37 Rate ItEstimating the forces and loads applied in tree systems requires the weight of different parts and portions be determined. One of the most difficult measures to estimate is green xylem weight in branches. Wood weight can be precisely and accurately determined in the laboratory from small samples at oven-dry moisture contents. Within living trees, moisture content values are difficult to determine accurately. The moisture contents of living tree xylem and associated tissue can vary between 30% and 250% as compared with the weight of any associatedwoody material.
- Crown Shape Factors & Volumes
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Hits: 1
Added: October 31, 2008
Rating: Votes: 32 Rate ItMany of the models for determining loads and forces in tree structural systems depend upon crown shape. Tree crown shapes are integral to a variety of models because volume estimates, surface area estimates, or various types of two dimensional crown projections are directly related to crown shape. Calculating crown shape in a natural setting under dynamic loads requires continuous changes (over a variety of time and spacial scales) with growth, damage, and applied forces.
- Crown Pruning Effects on Roots
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Tree growth and development are dependent upon a few basic mechanisms. These mechanisms are responsible for the tree making holistic adjustments to a changing external environment. These basic mechanisms also allow for correlation of processes internally.
- Critical Force for Buckling Tree Stems
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Tree strength and stiffness can resist significant forces and not fail. A large proportion of this strength lies with the thickness (diameter) of the stem. Stem buckling occurs when an exerted force begins and continues to bend the stem beyond recovery.
- Control of Shoot-root Balance in Trees
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This publication is a synthesis of the tree growth regulation and correlation literature. General processes and systems presented here represent educational models which professionals can use to better appreciate and understand basic tree functions.
- Control of Nitrogen Levels in Trees
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From an energy standpoint, uptake and reduction of nitrates with incorporation into an organic framework is one of the most expensive tasks a tree performs. It would hardly be worthwhile if useable nitrogen in the environment was not at a premium.
- Concepts of Change: Futuring Community Forestry
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Hits: 2
Added: October 31, 2008
Rating: Votes: 16 Rate ItThe one common, constant feature of the future will be accelerating change. Community natural resource management is changing as fast as the nation's demographics and quality of life technologies. As managers, we must be prepared for change, expect change, and allow change to help us manage more effectively.
- Common Trees of the Pacific Northwest
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Hits: 1
Added: October 31, 2008
Rating: Votes: 35 Rate ItWelcome to the tree identification Home Page at Oregon State University! The purpose of this site is to help you identify common conifers and broadleaves in the Pacific Northwest. Feel free to skip through the pages to learn more about specific genera, or to try your hand at identifying a tree specimen with a user-friendly dichotomous key. If you don't have a specimen handy, go to the mystery tree pages to try to identify the trees pictured.
- Assessing Pruning Wound Damage
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Hits: 1
Added: October 31, 2008
Rating: Votes: 35 Rate ItTo better understand and minimize damage to trees during pruning, an assessment system was developed. This system is based upon long-term tree functions and reactions to wounding.
- Allelopathy in Trees and Forests: A Selected Bibliography
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Hits: 1
Added: October 31, 2008
Rating: Votes: 34 Rate ItAllelopathy in trees and forests is an important health care issue. Allelopathy is the chemical modification of the site by an individual to enhance interference effectiveness. Allelopathy also involves the ecological communications between species which can positively or negatively influence growth, behavior, reproduction, and survival of associated species.
- Alaska Community Forestry Program
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A community or urban forest is all the trees growing in and around a city, town, or village. It includes trees in parks, school yards, home landscapes, utility rights-of-way, vacant lots, greenbelts and along stream banks. Shrubs, ground covers, soil, wildlife, and water bodies are also part of the urban forest. Streets, buildings, utilities, parking lots, and, most importantly, people, are an integral part of the urban ecosystem.
- A New Sense of Community: Defining Social Changes
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The term "community" is loosely and superfluously used in many contexts. Many times the term "community" is jargon for assuring inclusion and a delineator of political boundaries.
- Wood Products Business: Not Necessarily as Usual: Part 3
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Hits: 1
Added: October 25, 2008
Rating: Votes: 35 Rate ItBusiness improvements result from responsible attention to what is going on in the business, in similar businesses and in the community of consumers.
- Wood Products Business: Not Necessarily as Usual: Part 2
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Hits: 1
Added: October 25, 2008
Rating: Votes: 39 Rate ItDeveloping a customer base for a business and then continually satisfying it requires innovative thinking and forward-looking planning.
- Wood Products Business: Not Necessarily as Usual: Part 1
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Starting a business of any sort requires many steps before actually opening doors. Planning, filing permits, financing, etc. all must be completed before successful startup can occur.
- Wood Moisture Content in Georgia Buildings and Offices
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Wood shrinks and swells with changes in moisture content. Changing conditions of temperature and humidity in homes and offices affect wood moisture.
- Wood Decks: Practical Considerations from a Wood Perspective
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Considering problems that might occur is often more involved than dealing with those which actually occur. The vast majority of decks are actually quite satisfying and satisfactory.
- Urban Forest Inventory: Selected Bibliography
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A list of references for urban forest inventories.
- Tree-ring Porosity Forms in Hardwoods
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Hits: 1
Added: October 25, 2008
Rating: Votes: 33 Rate ItOne growth increment of a tree, commonly called a “growth ring,” is composed of structural, conducting, and defensive components. In a cross-section, the largest conducting vessels can be visible to the unaided eye or can be minutely small. Due to shoot growth rates and timing, and leaf expansion periods, different growth conditions affect vessel size and xylem composition.
- The University of Georgia Warnell School of Forestry and Natural Resources
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Hits: 1
Added: October 25, 2008
Rating: Votes: 30 Rate ItThe Daniel B. Warnell School of Forestry & Natural Resources offers rewarding degrees in Forestry, Fish & Wildlife, Soil and Water Resources, and Natural Resources Recreation and Tourism.
- Sustainable Forests Partnership Publications
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The Sustainable Forestry Partnership has publications for the wide array of sustainable forestry issues. These resources provide cutting edge information to the forestry community.
- Southern Catalpa: "The Fish Bait Tree"
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Hits: 1
Added: October 25, 2008
Rating: Votes: 28 Rate ItThe Southern catalpa (Catalpa bignonioides) tree is a common fixture along roadsides and in old yards. The big green leaves and distinctive long dangling fruits are noticeable from hundreds of yards. Although used in the past for a variety of wood-based products, today catalpa is used for shade trees and for growing a special caterpillar. This catalpa “worm” is prized by fishing enthusiast across the South.
- Sample Forest Stewardship Plan
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Answering these questions will help record your goals and visions for your property. Your private forester and state Service Forester will use this information to insure that the management plan and recommendations accurately reflect your ideas. The resulting plan will help you learn about your property, achieve your goals, and become a better steward of the land.
- RNGR - Reforestation, Nurseries and Genetics Resources
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Hits: 2
Added: October 25, 2008
Rating: Votes: 28 Rate ItRNGR is the USDA Forest Service clearing house for reforestation, forest and conservation nurseries, and forest genetics information.
- Quality Wood Products from Georgia Forestry
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Hits: 1
Added: October 25, 2008
Rating: Votes: 29 Rate It"Continued population growth and the assumed expansion of the United States economy will impact heavily on the forest resources of the United States. Additionally, changes in social values and attitudes are increasing the demand on the forest resources to produce a variety of goods and services. Such demands are shifting harvesting pressure from western to eastern forests." (Rosson, 1995). Forestry in the state of Georgia is reported as the number one manufacturing industry in the state in employment, output, and value added. The purpose of this presentation is to explore issues related to timber product output, forest land resources, ownership, employment, output, value added, and other forestry resource related issues in Georgia. Also, comparisons are made with other agricultural crops in Georgia and in the region.
- Plant Trees Right!
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Hits: 1
Added: October 25, 2008
Rating: Votes: 29 Rate ItGetting trees started correctly in your yard, along streets or in a park is critical to long tree life, easy care and low-cost maintenance. One way to ensure trees are planted correctly is to give them plenty of room to grow. Fruit trees, trees in landscape beds and specimen ornamental trees are grown for different reasons and are not planted the same way as shade and street trees. Here, we deal with shade and street tree planting.
- Osage-orange (Maclura pomifera): An American Traveler
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Hits: 1
Added: October 25, 2008
Rating: Votes: 31 Rate ItOsage-orange (Maclura pomifera) is a small tree in which people have found great value. Once discovered by early European settlers, it was carried and tended across the continent. Because of its attributes, it was prized anywhere agriculture and grazing animals were found. It is now considered escaped from cultivation and has naturalized in many areas. Solitary trees or small family groups can be found on old home sites, in alleys, and along roadways.
- Online Silviculture Quantitative Tools
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Hits: 1
Added: October 25, 2008
Rating: Votes: 28 Rate ItGreat website with links to online modeling and quantitative tools.
- Log Homes May Be Where the "Heart-wood" May Be
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Log homes were the homes of choice for earliest settlers. Some of those homes still stand today, evidence they can be durable. Wood is an excellent building material, too often taken for granted.
