Through a reduction in fire-frequency, mainly due to grazing
andfiresuppression,anumberofecosystemcharacteristics changed.
Specifically, forest floor depth and fuel loads increased, as did tree
densities, particularly of shade-tolerant and fire sensitive conifers
such as Douglas fir and true firs (e.g. Covington et al., 1997). These
changes led to reduced soil moisture and understorey vegetation
diversity,andtoincreasedmortalityofoldtrees (Binkley etal.,2007).
As a result of the increased amounts of fuel, continuous canopy and
fuel ladders, high intensity crown fires are likely to be standreplacing
events. Restoration efforts, which include the removal of
trees and ground fuel through thinning and controlled burning,
maintain openstand structures that prevent or reduce the likelihood
of high-intensity fires
Through a reduction in fire-frequency, mainly due to grazingandfiresuppression,anumberofecosystemcharacteristics changed.Specifically, forest floor depth and fuel loads increased, as did treedensities, particularly of shade-tolerant and fire sensitive coniferssuch as Douglas fir and true firs (e.g. Covington et al., 1997). Thesechanges led to reduced soil moisture and understorey vegetationdiversity,andtoincreasedmortalityofoldtrees (Binkley etal.,2007).As a result of the increased amounts of fuel, continuous canopy andfuel ladders, high intensity crown fires are likely to be standreplacingevents. Restoration efforts, which include the removal oftrees and ground fuel through thinning and controlled burning,maintain openstand structures that prevent or reduce the likelihoodof high-intensity fires
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