Title: Arizona's Forest Resources, 1999
Author: O'Brien, Renee;
Source: Resour. Bull. RMRS-RB-2. Ogden, UT: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 116 p.
Publication Series: Resource Bulletin (RB)
Description: This report presents a summary of the most recent inventory information for Arizona's forest lands. Much of the data are from the inventory completed in 1999 that included National Forest System lands and reserved lands. This report includes tables and highlights of area, number of trees, biomass, volume, growth, mortality, successional stage, understory vegetation, removals, and net change. Most of the tables are organized by forest type, species, diameter class, or owner group. The report also explains inventory design and inventory terminology, and discusses data reliability.
Results show that roughly 27 percent of the area of Arizona is forest land, and that about 59 percent of the forest land is administered by government agencies. About 9 percent of the forest land in Arizona is reserved from being utilized for wood products. The most common forest type is pinyon-juniper, comprising 40 percent of the total forest land. The tree species estimated to have the highest percent of the total number of trees is twoneedle pinyon, with 17 percent. Ponderosa pine is estimated to make up 38 percent of the total biomass, and 35 percent of the total cubic foot volume. The total volume of wood in live trees in Arizona is estimated to be over 15.5 billion cubic feet. The net volume of growing stock on nonreserved timberland (species traditionally harvested for lumber) is over 6.2 billion cubic feet, with almost 68 percent of that occurring on lands administered by the National Forest System.
Keywords: forest land area, forest inventory, number of trees, biomass, volume, growth, mortality, forest type, double sampling
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O'Brien, Renee 2002. Arizona's Forest Resources, 1999. Resour. Bull. RMRS-RB-2. Ogden, UT: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 116 p.
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