Northern Research Station

Title: Individual-tree probability of survival model for the Northeastern United States

Author: Teck, Richard M.; Hilt, Donald E.

Date: 1990

Source: Res. Rep. NE-642. Radnor, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 10 p.

Station ID: RP-NE-642

Description: Describes a distance-independent individual-free probability of survival model for the Northeastern United States. Survival is predicted using a sixparameter logistic function with species-specific coefficients. Coefficients are presented for 28 species groups. The model accounts for variability in annual survival due to species, tree size, site quality, and the tree's competitive position within the stand. Model performance is evaluated using the chi-square goodness-of-fit test. Results are presented for the calibration data and an independent validation set. The model has been incorporated into NE-TWIGS.

Keywords: logistic function; mortality; survival model; survival prediction

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Citation

Teck, Richard M.; Hilt, Donald E.  1990.  Individual-tree probability of survival model for the Northeastern United States.   Res. Rep. NE-642. Radnor, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 10 p..