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Keyword: soil

Ecosystem management and ecological restoration in the Anthropocene: integrating global change, soils, and disturbance in boreal and Mediterranean forests [Chapter 12]

Publications Posted on: June 25, 2020
Deforestation, rising temperatures, drought, fire and other ecological disturbances are reducing forest cover on much of the earth, and compromising the ability of forests to supply important ecosystem services.

History of forest soils knowledge and research [Chapter 4]

Publications Posted on: June 25, 2020
Human history is intricately linked to the soil. As human populations increased agricultural land use intensified. Wood availability was also important and resulted in the management of forested land for fuel, fiber and food. Soil mapping was an essential tool in planning future expansion of agriculture and resulted in an increased understanding in the factors that regulate soil formation.

Some relationships of plant cover to run-off, erosion, and infiltration on granitic soils

Publications Posted on: February 19, 2020
The fact that plant cover influences run-off, erosion, and infiltration has been firmly established by past research. Only under a few special conditions, however, has the degree of this influence been determined quantitatively. The study reported in this article was undertaken to secure a usable measure of this quantitative relationship, and to provide data for watershed management in the mountains of Colorado.

Watershed Management Research Meeting: Manitou Experimental Forest

Publications Posted on: February 19, 2020
This meeting was planned to allow a review of the measurements and processes involved in watershed research. The agenda lists topics and discussion leaders. The discussion should come from all those present. We are fortunate to have with us Bernie Frank, Ted Osborne, and Hank Sims from the Washington Office; George Hardaway and Alan Iamb from Region 3; and Jack McNutt from Region 2. We'll expect to hear from them throughout the meeting.

Soils and physical conditions of Manitou Experimental Forest

Publications Posted on: February 19, 2020
A survey was made of the soils and the physical conditions of the Manitou Experimental Forest during the summers of 1946, 1947, and 1948. The survey was made as a basis for (1) selection of sites for future experiments, (2) interpretation of results for experiments already in progress, and (3) obtaining a detailed knowledge of the soils of an area representative of the Pike National Forest and much of the Colorado Front Range.

Relation of plant cover to infiltration and erosion in ponderosa pine forests of Colorado

Publications Posted on: February 12, 2020
Ponderosa pine forests cover more than half of the timbered lands in Colorado. This forest zone occupies most of the Colorado Front Range, the easternmost range of the central Rocky Mountain system. Here ponderosa pine is found at elevations between 6,500 and 9,000 feet. Land features consist of ridges, mountain slopes, steep rocky canyons, foothills, narrow mountain valleys, and large openings or parks.

The fusion of discontinuous gullies

Publications Posted on: February 05, 2020
This case study demonstrates the fusion of two discontinuous gullies in the Colorado Front Range and relates storms and flows to the erosion events. In 7 years, only 5 storms produced runoff in a gully system in the Colorado Front Range of the Rocky Mountains. Storm intensities for periods of 10 minutes influenced runoff production; antecedent precipitation was of no benefit to forecast gully flows.

Metagenomic approaches to determine soil microbial communities associated with Armillaria root disease

Publications Posted on: October 02, 2019
Armillaria root disease causes extensive damage to tree roots throughout the world, but efficacious management practices are lacking. However, soil interactions among Armillaria species, microbial communities, and trees may determine the impact of pathogenic Armillaria on the growth and survival of trees. Two species, A. solidipes (highly virulent) and A. altimontana (less virulent), frequently co-occur in forests of inland northwestern USA.

Bedding of wetland soil: Effects of bed height and termite activity on wood decomposition

Publications Posted on: August 14, 2019
Microorganisms and termites are the primary wood decay agents in forests of the southeastern United States, whose activity can be affected by forest management practices. Bedding establishes raised planting beds on poorly-drained soils, but little is known about the effect of bedding or soil bed height on wood decomposition.

The Organic Truth: What 22 Years of Monitoring Reveals About Forest Soil Resiliency on the Kootenai National Forest

Documents and Media Posted on: April 16, 2019
It is impossible to avoid disturbing the forest when harvesting timber. Trees are felled, and soil is compacted beneath heavy equipment during harvest operations. Yet on many sites, the landscape recovers. A year later, a future forest may already be growing, with saplings and shrubs reclaiming the open ground. Even the soil recovers, as the results of a 22-year monitoring study in western Montana have shown. This finding is contrary to what was the accepted assumption, that compacted soils take a long time to recover, if at all, which in turn affects forest productivity. Document Type: Other Documents