contents Chapter 1: INTRODUCTION Geology and Soils Chapter 2: DESIGN OF THE STUDY Chapter 3: DESCRIPTION OF THE STANDS Lowest Mesa-top Site, M1 Chapter 4: DISCUSSION OF SITE INTERRELATIONS Soil and Vegetation Relationships of Selected Sites Chapter 5: THE ENVIRONMENT AND THE PREHISTORIC OCCUPATION Evidence of Prehistoric Climate APPENDIX: Annual Summaries of Environment Data illustrations 1 Map of Mesa Verde National Park and vicinity, showing location of environment measurement sites 2 Recording instruments at M2 3 A 3-cup totalizing anemometer atop tree at canyon-bottom site 4 Characteristic vegetation at M1 5 M2 site near park headquarters 6 Characteristic vegetation at M2 7 M3 site at North Rim, in late winter 8 Black sagebrush-grass community near M3 9 Oak thicket, recovered from mid-19th century burn, near M3 10 Navajo Canyon setting of canyon-bottom and slope sites 11 C2 site at bottom of Navajo Canyon 12 C1 site on west-southwest-facing slope in Navajo Canyon 13 C1 instrument shelter and surrounding area 14 C3 instrument shelter and surrounding area, across the canyon from C1 15 Graph showing soil moisture content and precipitation at the six sites in 1962 and 1963 16 Graphic comparison of monthly precipitation in 1962 and 1963 at the mesa-top sites and at the canyon-bottom site 17 Graph showing relationship of air temperatures to exposure under cloudless skies in June and December 1963 at the canyon-slope sites, C1 and C3 18 Air-temperature profiles of the west-south-west-facing slope in Navajo Canyon, showing pronounced cold-air drainage at the bottom and the "thermal zone" on the talus 19 Graph showing average wind velocities at the mesa-top and at the canyon bottom sites in 1962 and 1963 20 Graph showing progressions of five climatic variables at M2 and C2 sites on a cloudless day 21 Map showing locations of prehistoric farming terraces on Wetherill Mesa and in adjacent canyons tables 2 List of species observed in the environment measurement sites 3 Tree data at M1 4 Soil profile underlying M1 juniper-pinyon/bitterbrush stand 5 Soil moisture constants in percent dry weight 6 Some climatic factors of the mesa-top sites 7 Tree data at M2 8 Soil profile underlying M2 pinyon-juniper/mutton grass stand 9 Soil profile underlying M3 mountain brush vegetation 10 Soil profile underlying C2 big sagebrush/cheatgrass stand 11 Some climatic factors of the canyon sites 12 Tree data at C1 13 Soil profile underlying the C1 juniper-pinyon/big sagebrush stand 14 Tree data at C3 15 Soil profile underlying C3 pinyon-juniper/mountain brush stand Library of Congress Catalog Card Number: 72-600243
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