Treesearch

Lists 2905 publications, with annotations and subject and author indexes, issued during the first 50 years of the Pacific Southwest Forest and Range Experiment Station (formerly the California Forest and Range Experiment Station), headquartered at Berkeley, California.

Pitch pine (Pinus rigida Mill.) seedlings were grown at constant temperatures of either 21 C or 29 C. Photosynthetic temperature and light response curves were determined after 59, 107, and 153 days. Rates of Co2 uptake decreased with age, and the response to changes in light and temperature became less pronounced. Growth temperatures had no effect on the photosynthetic temperature optimum, and populations from Quebec, New Jersey, and Tennessee all had the same temperature optimum and response pattern. For the Tennessee population, growth at 21 C depressed the rate of photosynthesis at all...

Abstract - Continued inclinometer measurements at borehole sites installed in 1964 in northern California suggest that previously reported rates of soil creep are excessively high. Upon analysis of 35 access casings located in forested and grassland sites, no consistent direction of soil movement could be detected. In addition, no significant rate of soil creep could be found for the 8 years in which boreholes were measured. The study emphasizes the importance of obtaining intimate contact between the sides of the boreholes and the access casing, if soil creep measurements are to provide...

These eight papers were presented at Working Party S6.01-3, XVIth World Congress of the International Union of Forestry Research Organizations, Oslo, Norway, June 22, 1976. Topics covered include (a) improving studies on demand for outdoor recreation, (b) forecasting changes in number of visitors after a change in recreational quality at an area, (c) comparing the use of site surveys with home interviews for recreation planning, (d) measuring the relative value of selected outdoor recreation activity areas, (e) model ing changes in use or area conditions to determine effects on use...

Abstract - A crucial factor in the stability of steep forested slopes is the role of plant roots in maintaining the shear strength of soil mantles. Roots add strength to the soil by vertically anchoring through the soil mass into failures in the bedrock and by laterally tying the slope together across zones of weakness or instability. Once the covering vegetation is removed, these roots deteriorate and much of the soil strength is lost. Measurements of change in strength of roots remaining in the soil after logging at Staney Creek on Prince of Wales Island, south-east Alaska, indicate that...

For 16 years Jackson State Forest, managed by the California Department of Forestry, has been the site of a comprehensive watershed experiment. This experiment, on Caspar Creek five miles south of Fort Bragg on the Mendocino coast, is a cooperative project between the California Department of Forestry and the U. S. Forest Service Pacific Southwest Forest and Range Experiment Station. The California Department of Fish and Game, the California Department of Water Resources, the California Division of Mines and Geology and Humboldt State University have been cooperators in the past

Lists 177 references, including most of the available citations on tanoak (Lithocarpus densiflorus [Hook. & Am.] Rehd.), with major emphasis on dendrology, synecology, diseases, chemical control, seasoning, and uses of the wood.