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Keyword: soil properties

Biochar amendments to forest soils: Effects on soil properties and tree growth

Documents and Media Posted on: December 20, 2018
Bioenergy production from forest biomass offers a unique solution to reduce wildfire hazard fuel while producing a useful source of renewable energy. However, biomass removals raise concerns about reducing soil carbon (C) and altering forest site productivity.Document Type: Other Documents

Minimizing soil compaction in Pacific Northwest forests

Documents and Media Posted on: October 24, 2018
High organic-matter content and other inherent properties make Pacific Northwest forest soils generally low in bulk density, high in porosity, and low in strength. As a consequence, these soils are susceptible to compaction by tractive machines, and stand growth may be decreased from 5 to 15 percent.Document Type: Other Documents

Monitoring forest soil properties to maintain productivity

Documents and Media Posted on: October 17, 2018
This paper addresses considerations necessary to construct a scientifically based sampling system for monitoring soils. A statistically sound method, which uses line transects, is described, and several applications for various sampling objectives are discussed.Document Type: Other Documents

Soil properties as a factor in regeneration failures in the grand fir mosaic—Preliminary results

Documents and Media Posted on: October 17, 2018
The grand fir mosaic (GFM) consists of a patchwork arrangement of several forest plant communities located in an elevation range of 4,000 to 5,800 feet above sea level. The grand fir mosaic is found primarily in Idaho's Clearwater and Nez Perce National Forests. The plant communities (habitat type from Cooper and others 1987) are:Document Type: Other Documents

Mechanical site preparation impacts on soil properties and vegetation communities in the Northwest Territories

Documents and Media Posted on: October 03, 2018
Greater utilization of hardwood species and societal concerns over maintenance of ecological integrity have provided impetus for forest managers to consider alternative silvicultural practices in boreal mixedwood forests. The objective of this study was to quantify the effects of five mechanical site preparation (MSP) treatments on soil properties and understory vegetation of mixed-wood stands in the Northwest Territories (NWT).Document Type: Other Documents

Impacts of soil compaction and tree stump removal on soil properties and outplanted seedlings in northern Idaho, USA

Documents and Media Posted on: September 26, 2018
Intensive timber harvesting and site preparation are becoming more common as demand for timber-based products increases. On some harvested sites in the western United States of America and Canada, stump removal is used to ameliorate root disease problems. Soil compaction and nutrient loss could become a problem on some sites after harvesting, site preparation, or stump removal.Document Type: Other Documents

Aboveground vertebrate and invertebrate herbivore impacts on net N mineralization in subalpine grasslands

Publications Posted on: August 18, 2016
Aboveground herbivores have strong effects on grassland nitrogen (N) cycling. They can accelerate or slow down soil net N mineralization depending on ecosystem productivity and grazing intensity. Yet, most studies only consider either ungulates or invertebrate herbivores, but not the combined effect of several functionally different vertebrate and invertebrate herbivore species or guilds.

Wildland fire in ecosystems: effects of fire on soils and water

Publications Posted on: May 12, 2016
This state-of-knowledge review about the effects of fire on soils and water can assist land and fire managers with information on the physical, chemical, and biological effects of fire needed to successfully conduct ecosystem management, and effectively inform others about the role and impacts of wildland fire.

Soil properties and soil nitrogen dynamics of prairie-like forest openings and surrounding forests in Kentucky's Knobs Region

Publications Posted on: May 12, 2016
Herbaceous communities located within forest openings increase plant species diversity of forests in the Knobs Region of Kentucky. Although these grass-dominated communities are protected and managed for rare plant species conservation, it is unclear how soil conditions may delineate the grassland-forest boundary.

Performance of high temperature heat flux plates and soil moisture probes during controlled surface fires

Publications Posted on: May 23, 2013
Natural and prescribed fires play an important role in managing and maintaining most ecosystems in the western United States. The high soil temperatures associated with fire influence forests and their ability to regenerate after a fire by altering soil properties and soil chemistry and by killing microbes, plant roots, and seeds.

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