What Is a Timberline?

What Is a Timberline?
Timberline, or tree line, is the point in any landscape beyond which trees will not grow. Typically it is affected by either altitude or latitude, although climatic and geographic factors can also influence tree growth.

Geography

The location of the timberline changes from region to region. Wherever it occurs, it is a rapid transition in landscape from forest to tundra.

Mountains

In mountainous regions, the timberline is a result of elevation changes and steepness. It may be that at a certain slope, the soil is not strong enough to support large plant life.

Poles

In the polar regions, the timberline can be found at elevations as low as sea level. In such harsh climates, the resources to support large plant life are not present.

Trees

Trees near the timberline are often shaped by the weather conditions. A short, misshapen growth of trees is the result of high winds, cold temperatures and long winters that often occur in the poles and at high altitudes.

Causes

The reason for the timberline is still in debate. Different theories suggest various reasons for the sudden absence of trees, including lack of fire, harsh conditions, poor nutrient regeneration and limited drainage.

Article Written By Jim Jansen

Jim Jansen has been writing articles since 2005 and has been featured in publications such as "The River Watch," and also contributes to Trails.com and LIVESTRONG.COM. He has a Bachelor of Arts in professional writing from Michigan State University. Jansen specializes in outdoor recreation and environmental topics.

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