How to estimate tree mortality resulting from underburning

Abstract

Prescribed burning beneath standing timber is widely used to accomplish objectives such as preparing land for reforestation, reducing fuels, improving livestock range, and modifying wildlife habitat. Such burning is usually guided by written plans that set forth general objectives and a firing pattern to accomplish them. The plan typically specifies acceptable levels of mortality in standing trees and describes desired fire behavior, particularly flame length. This article offers two nomograms to facilitate effective planning and successful burning. One nomogram is intended for estimating levels of mortality for various scorch heights among tree species common to the Northwest. A second nomogram is useful for determining the flame length that will keep tree mortality within specifications. The nomograms can also be used to estimate numbers, sizes, and species of trees to leave in a partial cut and also to identify trees that will die and should be salvaged after an unplanned fire.

Citation

Reinhardt, Elizabeth D.; Ryan, Kevin C. 1988. How to estimate tree mortality resulting from underburning. Fire Management Notes. 49(4): 30-36.