Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub

    Description

    Tree mortality has traditionally been assessed in forest inventories through summaries of mortality by location, species, and causal agents. Although these methods have historically constituted the majority of tree mortality summarizations, they have had limited use in assessing mortality trends and dynamics. This study proposed a novel method of applying survival analysis for the purpose of analyzing tree mortality in forest inventories. Individual tree size and growth increments were used to estimate survival and hazard functions for a forest inventory for the state of Minnesota. These estimates provided regional mortality and variance estimates by diameter at breast height (DBH) and diameter growth classes (ΔDBH) between successive inventories. Comparisons of survival/hazard curves for various tree populations and tests of effects of covariates on individual survival curves were conducted allowing for mortality hypothesis testing across user-defined tree populations (i.e., species, location, stand conditions, and damage agents). Survival analysis techniques, facilitated by the variables of DBH and ΔDBH, may provide foresters with the ability to test tree mortality hypotheses and summarize regional tree mortality trends.

    Publication Notes

    • Check the Northern Research Station web site to request a printed copy of this publication.
    • Our on-line publications are scanned and captured using Adobe Acrobat.
    • During the capture process some typographical errors may occur.
    • Please contact Sharon Hobrla, shobrla@fs.fed.us if you notice any errors which make this publication unusable.
    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Woodall, C.W.; Grambsch, P.L.; Thomas, W. 2005. Applying survival analysis to a large-scale forest inventory for assessment of tree mortality in Minnesota. Ecological Modelling 189 (2005) 199?208

    Keywords

    Mortality, Survival analysis, Hazard function, Forest inventory

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page
https://www.fs.usda.gov/treesearch/pubs/13533