THE AUTHORS 



ELWOOD L. MILLER is associate professor of forestry in 

 the Division of Renewable Natural Resources, Max C. 

 Fleischmann College of Agriculture, University of 

 Nevada, Reno. He has a B.S.F. degree from Northern 

 Arizona University, Flagstaff; an M.F. degree from 

 Oregon State University, Corvallis; and a Ph.D. degree 

 in forest ecology from Michigan State University, East 

 Lansing. 



RICHARD O. MEEUWIG is a research forester and leader of 

 the Intermountain Station's Pinyon-Juniper Ecology and 

 Management research work unit at the Renewable 

 Resources Center, University of Nevada, Reno. He 

 has B.S. and M.S. degrees in forestry from the University 

 of California, Berkeley, and a Ph.D. degree in soil 

 physics from Utah State University, Logan. 



JERRY D. BUDY is assistant professor of forestry in the 

 Division of Renewable Natural Resources, Max C. 

 Fleischmann College of Agriculture, University of 

 Nevada, Reno. He has a B.S. degree from the University 

 of Wisconsin, Madison, and is completing requirements 

 for a Ph.D. degree in forest hydrology at the University 

 of Nevada, Reno. 



ACKNOWLEDGMENT 



Special thanks are due Clair Baldwin, Austin Ranger 

 District, and Barry Davis, Bridgeport District of theToiyabe 

 National Forest; John Wilcox, Ely District, and Garth 

 Baxter, Wells District of the Humboldt National Forest for 

 their cooperation in locating study sites and providing 

 maps. 



RESEARCH SUMMARY 



Relationships between tree measurements and biomass 

 of singleleaf pinyon (Pinus monophylla) and Utah juniper 

 (Juniperus osteosperma) were investigated on 109 trees 

 on 19 study sites in Nevada and eastern California. The 

 resulting equations and tables provide a means for 

 estimating the total aboveground biomass as well as the 



weights for the various size fractions by species. The 

 tables can also be used to estimate the cordwood and 

 slash resulting in atypical fuelwood harvesting operation. 



The entire aboveground biomass was separated into four 

 size classes and weighed in the field. Cross-sectional 

 disks and samples of twigs, foliage, and deadwood were 

 used to determine the moisture contents of the various size 

 fractions. The relationships between tree measurements 

 and ovendry weights of the various size fractions were 

 evaluated utilizing stepwise multiple regression tech- 

 niques. Of the 13 tree measurements evaluated, stem 

 diameter and average crown diameter were the most highly 

 correlated with the ovendry weights. 



CONTENTS 



Page 



INTRODUCTION -, 



METHODS 2 



Study Locations 2 



Field Techniques 2 



Tree Measurements 2 



Laboratory Analysis 3 



RESULTS 3 



Total Tree Biomass 3 



Regression Analysis 5 



Equations 5 



Weight Tables 6 



CONCLUSIONS 10 



PUBLICATIONS CITED 10 



APPENDIX A 12 



APPENDIX B 14 



APPENDIX C 16 



