Alpine Line

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51	PDF Document Add to Reading List Source URL: www.fs.usda.gov Language: English - Date: 2011-10-11 17:50:06 Physical geography Extinct volcanoes Climate Sacred mountains Alpine tundra Tundra San Francisco Peaks Humphreys Peak Tree line Geography of Arizona Coconino National Forest Arizona
52	PDF Document Add to Reading List Source URL: pubs.aina.ucalgary.ca Language: English - Date: 2005-09-22 18:18:45 Ornamental trees Climate Tundra Birch Betula pubescens Tree line Subalpine zone Alpine tundra Soil Physical geography Botany Biogeography