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Developing Risk Rating Systems For Mature Red Fir And White Fir In Northern California
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Book Synopsis Developing Risk-rating Systems for Mature Red Fir and White Fir in Northern California by : G. T. Ferrell
Download or read book Developing Risk-rating Systems for Mature Red Fir and White Fir in Northern California written by G. T. Ferrell and published by . This book was released on 1981 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Risk-rating Systems for Mature Red Fir and White Fir in Northern California by : George T. Ferrell
Download or read book Risk-rating Systems for Mature Red Fir and White Fir in Northern California written by George T. Ferrell and published by . This book was released on 1980 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Risk-rating Systems for Mature Red Fir and White Fir in Northern California by : George T. Ferrell
Download or read book Risk-rating Systems for Mature Red Fir and White Fir in Northern California written by George T. Ferrell and published by . This book was released on 1980 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: On the basis of crown and bole characteristics, risk-rating systems to predict the probability that a tree will die within 5 years were developed for mature red fir and white fir in northern California. The systems apply to firs at least 10 inches (25.4 cm) in diameter-at-breast-height (d.b.h.), growing in mature stands, with the original overstory at least partially intact. From 1975 to 1977, 1012 red firs (851 live, 161 dead) and 2571 white firs (2430 live, 141 dead) were examined in virgin and cutover stands. Tree characteristics were selected and used as predictor variables in regression equations. The risk equations were then translated into Award-Penalty Point Systems for field use. A tree is awarded points on the basis of ratings of some characteristics, and penalized points on the basis of ratings of others. The difference between the Award and Penalty Point Totals-the Risk Point Total-is the value used to predict a tree's death within 5 years. This report describes studies designed to develop, test, and extend the risk-rating systems. Properly used, these systems should contribute to the sound, long-term management of California's true firs.
Book Synopsis Ten-year Risk-rating Systems for California Red Fir and White Fir by : George T. Ferrell
Download or read book Ten-year Risk-rating Systems for California Red Fir and White Fir written by George T. Ferrell and published by . This book was released on 1989 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ten-year Risk-rating Systems for California Red Fir and White Fir by : George T. Ferrell
Download or read book Ten-year Risk-rating Systems for California Red Fir and White Fir written by George T. Ferrell and published by . This book was released on 1989 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ten-year Risk-rating Systems for California Red Fir and White Fir by : George T. Ferrell
Download or read book Ten-year Risk-rating Systems for California Red Fir and White Fir written by George T. Ferrell and published by . This book was released on 1989 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ten-year Risk-rating Systems for California Red Fir and White Fir by : George T. Ferrell
Download or read book Ten-year Risk-rating Systems for California Red Fir and White Fir written by George T. Ferrell and published by . This book was released on 1989 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Growth Classification Systems for Red Fir and White Fir in Northern California by : George T. Ferrell
Download or read book Growth Classification Systems for Red Fir and White Fir in Northern California written by George T. Ferrell and published by . This book was released on 1983 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Growth Classification Systems for Red Fir and White Fir in Northern California by : George T. Ferrell
Download or read book Growth Classification Systems for Red Fir and White Fir in Northern California written by George T. Ferrell and published by . This book was released on 1983 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis USDA Forest Service General Technical Report PSW. by :
Download or read book USDA Forest Service General Technical Report PSW. written by and published by . This book was released on 1980 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hazard-rating Systems in Forest Insect Pest Management by :
Download or read book Hazard-rating Systems in Forest Insect Pest Management written by and published by . This book was released on 1981 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Blue Mountains Forest Health Report by :
Download or read book Blue Mountains Forest Health Report written by and published by . This book was released on 1991 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book General Technical Report PSW. written by and published by . This book was released on 1989 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Resource values in analyzing fire management programs for economic efficiency by : Irene A. Althaus
Download or read book Resource values in analyzing fire management programs for economic efficiency written by Irene A. Althaus and published by . This book was released on 1982 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Using Indicator Plants to Assess Susceptibility of California Red Fir and White Fir to the Fir Engraver Beetle by : George T. Ferrell
Download or read book Using Indicator Plants to Assess Susceptibility of California Red Fir and White Fir to the Fir Engraver Beetle written by George T. Ferrell and published by . This book was released on 1986 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using a Vegetation Drought Index (VDI) for estimating the susceptibility of California red and white firs to the fir engraver beetle (Scolytus ventralis) was evaluated in northern California forests where these true firs (Abies species) occur in mixed conifer and true fir stands. Midway through the summer drought, true fir moisture stress-a known predisposing factor-was highest on sites with highest VDI values (most xeric). In mixed conifer stands, the susceptibility of white firs-as indicated by the mean percentage of their basal area killed annually-was highest on sites with highest VDI values. But in true fir stands, the susceptibility of mixed red and white firs was highest on sites with the lowest VDI values. Regression models with VDI, stand basal area, and percentage of true fir as regressors lacked the required predictive range and precision, suggesting that VDI will likely have to be used in combination with predictors other than, or in addition to, those analyzed.
Book Synopsis Lassen, Plumas, Tahoe National Forests (N.F.), Herger-Feinstein Quincy Library Group Forest Recovery Act by :
Download or read book Lassen, Plumas, Tahoe National Forests (N.F.), Herger-Feinstein Quincy Library Group Forest Recovery Act written by and published by . This book was released on 1999 with total page 1122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Toward Wiser Use of Our Forests and Rangelands by :
Download or read book Toward Wiser Use of Our Forests and Rangelands written by and published by . This book was released on 1982 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: