. Bulletin of the Department of Agriculture. Agriculture; Agriculture. saw>RrammrM UNITED STATES DEPARTMENT OF AGRICULTURE BULLETIN No. 1059 Contribution from the Forest Service WILLIAM B. GREELEY, Forester Washington, D. C. May 19,1922 RESEARCH METHODS IN THE STUDY OF FOREST ENVIRONMENT By CARLOS G. BATES, Silviculturist In Charge Fremont Forest Experiment Station and RAPHAEL ZON, Forest Economist CONTENTS Page. Introduction,. ." . 2 Measurement of Environmental Condi- tions Affecting Vegetation 11 Climatic Characteristics of Locality ... 11 Natural Climatic Regions 11 Data Obtai
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. saw>RrammrM UNITED STATES DEPARTMENT OF AGRICULTURE BULLETIN No. 1059 Contribution from the Forest Service WILLIAM B. GREELEY, Forester Washington, D. C. May 19,1922 RESEARCH METHODS IN THE STUDY OF FOREST ENVIRONMENT By CARLOS G. BATES, Silviculturist In Charge Fremont Forest Experiment Station and RAPHAEL ZON, Forest Economist CONTENTS Page. Introduction,. ." . 2 Measurement of Environmental Condi- tions Affecting Vegetation 11 Climatic Characteristics of Locality ... 11 Natural Climatic Regions 11 Data Obtained by the Weather Bureau. 11 Knowledge of Existing Stations Nec- essary 12 Periods of Growth and Rest 12 Special Observations on Climate and Soil of Locality : . 13 Location of Instruments for Study of Growth 13 Location of Instruments for Study of Reproduction 13 Air Temperatures 15 Special Observations on Climate and Soil of Localityâcontinued. Soil Temperatures 26 Solar RadiationâLight 39 Precipitation 60 Soil Moisture and Soil Qualities . 66 Atmospheric Humidity 143 Wind Movement. , 146 Evaporation 151 Phenology ....". 168 External -Field Observations 170 Internal or Physiological Observations 171 Field Observations, Photographs, and Maps 172 Appendix â 175 List of References 202. WASHINGTON ING OFFICE 1922. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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