Wood 101

What is a Tree? How Does it Work?

Tree Physiology

A tree is a tall plant with woody tissue. Trees gather light for photosynthesis through their leaves; this process creates “food” for the tree.

Most of a tree trunk is dead tissue and serves only to support the weight of the tree crown. The outside layers of the tree trunk are the only living portion. The cambium produces new wood and new bark.

The band of tissue outside of the cambium is the phloem. Phloem transports new materials (the sugars created ...

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Planting Trees for Conservation

Trees can be planted for several conservation purposes. These include windbreaks and living snow fences, wildlife habitat and forest restoration.

Conservation Plantings: Planning, Design and Site Preparation

Conservation tree plantings can provide many benefits. However, successful plantings require well-defined objectives that help answer many questions.

Some factors to consider in planning a tree planting, whether in the mountains or on the plains or whether it is designed to control wind or snow, or benefit wildlife:

Tree plantings benefit land and people by:

Site Preparation

Site preparation ...

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Forestry and Wildfire Glossary

Abiotic Factors

The non-living components of the environment, such as air, rocks, soil, water, peat, and plant litter.


The establishment of trees on an area that has lacked forest cover for a very long time, or has never been forested.


A single layer of cells between the woody part of the tree and the bark. Division of these cells result in diameter growth of the tree through formation of wood cells (xylem) and inner bark (phloem).


The forest cover of branches and foliage formed ...

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How to Measure Trees and Logs

Selling timber without measuring the products is like selling livestock without weighing the animals. Knowing what you have to sell and securing several bids can mean many additional dollars from your timber sales. With the assistance of a professional forester, decide which trees are ready for market, then measure them and mark them with paint spots at breast height and below stump height. If the trees are already cut, scale the logs before they are sent to the mill.

The Missouri ...

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