Management Practices for Different Forest Types

Colorado’s forest types evolved throughout our six ecoregions with varying sunlight, nutrient, water and elevational adaptations.

Requirements for Colorado’s major tree species are varied, as are the management approaches that are appropriate for these forest types.

For instance, management practices that encourage healthy forest conditions in ponderosa pine in the montane zone will not be appropriate for lodgepole pine, spruce-fir, piñon-juniper or aspen forests. The needs of these forest types are vastly different, and therefore, effective management strategies to encourage healthy forests in these various types also will vary.

Your Local Forester can give you assistance in this area.

Overview

Colorado’s forest types evolved throughout our six ecoregions with varying sunlight, nutrient, water and elevational adaptations.

Requirements for Colorado’s major tree species are varied, as are the management approaches that are appropriate for these forest types.

Contact your local CSFS field office for assistance in this area.

Lodgepole Pine Management

Lodgepole pine, (Pinus contorta) is a familiar species in the montane and subalpine forests of Colorado’s Rocky Mountains. It grows at elevations between 6,000 and 11,000 feet. Because of the mountain pine beetle epidemic, many landowners and land managers are concerned about how to actively manage lodgepole pine stands to:

Treat the dead standing trees killed by the insects
Protect homes and communities from wildfire
Ensure that the future forest is better structured to prevent widespread mortality from insect epidemics and wildfire

Gambel Oak Management

Gambel Oak (Quercus gambelii) is a shrub mostly found along the Front Range to southern Colorado.

It grows at elevations between 6,000 and 9,000 feet.

Management of gambel oak is important because after recurring fires the shrubs can grow into thick clumps.

This may decrease the benefits for wildlife or livestock and increase wildfire risk.

Piñon-Juniper Management

Piñon-juniper woodlands are widespread in Colorado’s lower elevations, ranging from 4,900 to 8,000 feet on Colorado’s Western Slope and in limited distribution in south-central Colorado and the Eastern Plains. In southeastern Colorado, piñon-juniper ecosystems are found in the canyonlands and adjacent shortgrass prairie ecosystems below the Gambel oak zone.

Cottonwood Management

Adapted to thrive on Colorado’s Eastern Plains, in mountain valleys and along riparian areas throughout the state, cottonwoods represent the largest native broadleaf trees in the state.

Cottonwoods are the most pervasive deciduous trees found at lower elevations.

Basic Forest Management Principles

Forests are dynamic. Other than natural growth and succession, change agents include: forest fires (leading to plant succession), windstorms, diseases, insects, overly dense tree stands, forest thinning and reforestation.
As a forest matures, individual trees become more or less dominant while others may become overtopped. A tree’s position in a stand has a significant effect on its growth rate and susceptibility to change agents.
Where trees grow often depends on the characteristics of that tree species. Not all tree species will grow in the same area.
Different species respond differently to different silvicultural treatments. Silviculture is the art and science of controlling the establishment, growth, composition, health and quality of forests.
Basal area is the area of a tree cross-section at breast height (4-1/2 ft.). This includes the bark and is expressed in square feet as DBH (diameter breast height).
Agroforestry involves afforestation and reforestation for windbreaks, increased crop yield, increased water storage, wildlife enhancement, road protection and enhancing the landscape.
In applying ecological principals to forest management on private land, the owner’s goals and management objectives must be kept in the forefront. A landholder’s management activities are driven by his or her objectives.