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Each tree's range has an upper limit, the altitude above which it's too cold for the tree to grow, and a lower limit, below which it's too dry.
Some trees are adapted to hot, dry foothills: A three-inch ponderosa pine seedling may have roots two feet long. It can take soil surface temperatures of 180 F (82 C), but a heavy frost can kill it.
Other trees can survive short summers and bitter winters: The new needles of subalpine fir resist frost, and its branches shed heavy snow. But its roots are shallow and could not survive the dry heat of the foothills.
The next pages describe five LIFE ZONES found at different altitudes in the Rocky Mountains. Some trees grow in several zones, but if you know what zone you're in you can usually tell what trees you'll find. --This text refers to an alternate Paperback edition.
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Most Helpful Customer Reviews
10 of 10 people found the following review helpful:
5.0 out of 5 stars
Great, practical, tiny and easy to use,
By A Customer
This review is from: Rocky Mountain Tree Finder: A Pocket Manual for Identifying Rocky Mountain Trees (Paperback)
This is a great little pocket guide to the native trees in the intermountain west. It uses a key system that asks you simple questions about the shape or size of different parts of the tree, and finally leads you to the species. It's great for someone like me with no experience.
4 of 4 people found the following review helpful:
4.0 out of 5 stars
Book Review,
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This review is from: Rocky Mountain Tree Finder: A Pocket Manual for Identifying Rocky Mountain Trees (Paperback)
Simple concept, not a lot of detail, but for a pocket book appears to contain all of the essentials to accurately identify trees.
2 of 2 people found the following review helpful:
4.0 out of 5 stars
Excellent Classification Book!,
Amazon Verified Purchase(What's this?)
This review is from: Rocky Mountain Tree Finder: A Pocket Manual for Identifying Rocky Mountain Trees (Paperback)
This company makes a very good series of classification books. The pictures and descriptors are accurate and easy to follow. I use them for my high school Botany and Biology classes with ease!
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