Publisher's Synopsis
Excerpt from Usda Forest Service Research Paper, 1979-1980: Int-229 to Int-235
The distribution of the pinyon - juniper woodlands of the Great Basin has been mapped from landsat-l satellite photography. Dot grid analysis of this map indicates that about 17. 6 million acres (7. 1 million ha) of this woodland are found in the Great Basin. The distribution map was field checked and floristic data were systematically taken at 482 stands on 66 of the approximately 200 mountain ranges in the study area. A list of 240 positively identified Species of vascular plants is provided to help other workers initiate studies in the pinyon-juniper vegetation type. In this study, variations in total vegetal cover are related to latitude, longi tude, and elevation. Vegetal cover increases strongly with elevation and slightly with latitude. Longitudinal patterns are related to increases in average elevation. The greatest average vegetal cover is found in the higher, central portion of the Great Basin. Sorting of the tree species is due more to elevation than latitude or longitude. Junipers occupy the lower, drier elevations, whereas pinyons increase at higher elevations. Double-needle pinyon is found more frequently in the south eastern Great Basin where more of the rainfall comes during the summer. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.