Heterogeneity in ponderosa pine/Douglas-fir forests: age and size structure in unlogged and logged landscapes of central Colorado

Published source details Kaufmann M.R., Regan C.M. & Brown P.M. (2000) Heterogeneity in ponderosa pine/Douglas-fir forests: age and size structure in unlogged and logged landscapes of central Colorado. Canadian Journal of Forest Research, 30, 698-711.
Share Tweet Email

This study is summarised as evidence for the following.

	Action	Category
	Log/remove trees within forests: effects on mature trees Action Link

Log/remove trees within forests: effects on mature trees

A site comparison study in temperate coniferous forest in Colorado, USA (Kaufmann, Regan & Brown 200) found that tree density was generally higher in logged compared with unlogged area. Density of trees (trees/ha) over 1.4 m tall was higher in the logged area in east and west facing (logged: 728; unlogged: 350) and flat, high altitude plots (logged: 432; unlogged: 214), but similar between areas in north facing (1153-1229), south facing (219-402) and low altitude riparian plots (379-1148). Total basal area (m²/ha) was higher in logged flat high altitude plots (logged: 19; unlogged: 11), lower in logged north facing plots (logged: 24; unlogged: 31) and similar between areas in south facing (15-16), east and west facing (18-20) and low altitude riparian plots (21-22). Data were collected in five north facing, five south facing, five east and west facing, five flat high altitude and five low altitude riparian plots (0.1 ha) in each of logged (since the late 1800s) and unlogged (since end of 19^th century) study areas (4 km²).