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Friday, August 14, 2020 | History

2 edition of Soil and understory vegetation characteristics of a tractor-logged forest in eastern Oregon found in the catalog.

Soil and understory vegetation characteristics of a tractor-logged forest in eastern Oregon

Michael Duane Snider

Soil and understory vegetation characteristics of a tractor-logged forest in eastern Oregon

by Michael Duane Snider

  • 209 Want to read
  • 6 Currently reading

Published .
Written in

    Subjects:
  • Plant-soil relationships -- Oregon.,
  • Cutover lands -- Oregon.

  • Edition Notes

    Statementby Michael Duane Snider.
    The Physical Object
    Pagination[10], 122 leaves, bound :
    Number of Pages122
    ID Numbers
    Open LibraryOL14228205M

    Ground cover plants are easily sampled with a 1 m2 quadrate (a hoola hoop or rectangular frame placed on the ground). It would not be possible, however, to sample overstory trees with a 1 m2 quadrate. It is necessary, then, to divide the vegetation into sampling units that reflect the two dominant growth forms: overstory trees and understory. Fall and spring prescribed burns were conducted for the third time (0, 5, and 10 years) on replicated ponderosa pine study sites in the Blue Mountains of eastern Oregon. The impact of repeated burns on fuel loads, delayed tree mortality, and changes in understory vegetation with and without grazing, are being measured.

    r Maintaining forest soil productivity is less costly than correction or mitigation, such as trying to fix damaged soils after the fact. r Soil productivity influences what plants can grow on a site. The present study sought to determine differences in soil characteristics related to spruce-fir and beech-birch vegetation in the Great Smoky Mountains when other factors were held as nearly constant as possible. An attempt was made to evaluate the influence of bedrock on soil characteristics and vegetation patterns. Hopefully this investigation may contribute to a greater understanding of the.

    Hall, F. C. Vegetation-soil relations as a basis for resource management on the Ochoco National Forest of central Oregon. Unpublished dissertation, Oregon State University, Corvallis. pp. Hall, F. C. Plant communities of the Blue Mountains in eastern Oregon and . Invasive plants often prefer disturbed ground, don’t disturb soil unless it is necessary. Monitor disturbed sites through several growing seasons for invasives. Maintain desirable species: Establishing and maintaining competitive, desirable plants along roadsides and disturbed areas prevents or slows establishment of invasive plants.


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Soil and understory vegetation characteristics of a tractor-logged forest in eastern Oregon by Michael Duane Snider Download PDF EPUB FB2

The Eastern Cascades Slopes and Foothills ecoregion is a Level III ecoregion designated by the United States Environmental Protection Agency (EPA) in the U.S.

states of Oregon, Washington, and the rain shadow of the Cascade Range, the eastern side of the mountains experiences greater temperature extremes and receives less precipitation than the west s: List, Cascades (4), Sierra Nevada (5).

Soil and understory vegetation characteristics of a tractor-logged forest in eastern Oregon Public Deposited. Analytics conifer stand in the Blue Mountains of Oregon was intensively examined to assess the impact of logging disturbance on soils and herbaceous vegetation.

Sampling was conducted six years after much of the timber overstory was Author: Michael Duane Snider. Soil and understory vegetation characteristics of a tractor-logged forest in eastern Oregon.

Abstract. Graduation date: A ha mixed conifer stand in the Blue Mountains of Oregon\ud was intensively examined to assess the impact of logging disturbance\ud on soils and herbaceous vegetation.

Sampling was conducted six\ud years after. SOIL AND UNDERSTORY VEGETATION CHARACTERISTICS OF A TRACTOR-LOGGED FOREST IN EASTERN OREGON INTRODUCTION Logging by tractor is the most common method of harvesting timber on gentler terrain in eastern Oregon and Washington, as in much of North America today (Froehlich ).

Compared with other. Soil characteristics were investigated on a mixed conifer forest stand in Oregon's Blue Mountains. The most recent logging had occurred on the site 6 years previously; one year after harvest.

Forest soils, where soil formation has been influenced by forest vegetation, are generally characterized by deeply rooted trees, significant ‘litter layers’ or O horizons, recycling of organic matter and nutrients, including wood, and wide varieties of soil-dwelling organisms (Figure 1).There are also soils now covered with forest vegetation, often plantations, on lands that were not.

Soil and understory vegetation characteristics of a tractor-logged forest in eastern Oregon / This parametric-study is performed as a function of Soil Moisture Content (SMC), and vegetation. Soil physico-chemical characteristics. The physical characteristics of soil of five subgroups (sal, sal-mixed, oak, pine and oak-mixed) and two groups (dry deciduous forest and temperate forest) are summarized in (Tables 2,3).

Among subgroups, the pH of the soils ranged from to The pH was highest in oak and least at sal soil. The effects of western juniper (Juniperus occidentalis) control on understory vegetation and soil water content were studied at the watershed-scale. Seasonal differences in topsoil (12 cm) water content, as affected by vegetation structure and soil texture, were evaluated in a ha untreated watershed and in a ha watershed where 90% juniper was removed in Silviculture of mixed conifer forests in eastern Oregon and Washington.

Gen. Tech. Rep. PNW Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 70 p. [] Shearer, Raymond C. Seedbed characteristics in western larch forests after prescribed burning. Res. Pap. Ponderosa pine forests are a major forest type in western North America (Oliver and Ryker ) and their ecological history has served as a textbook example for the reintroduction of fire and the use of prescribed fire to restore forest structure and function (Moore et al.

Allen et al. Hessburg and Agee ). Thus, the scientific definition for soil is ‘the unconsolidated mineral material on the surface of the earth that serves as a natural medium for land plants’ (Soil Science Society of America, ); by extension, forest soils are those which support forest vegetation.

The soil is not just a storehouse of raw materials used by plants; it is. Forests and forest soils play a broad, complex and interactive role within the environment Soils have provided the foundation for trees and entire forests over millions of years. Soil is an important component of forest and woodland ecosystems as it helps regulate important ecosystem processes, such as nutrient uptake, decomposition, and water.

Temperate forest - Temperate forest - Flora: Most of the areas of North American deciduous forest are dominated by oaks (several species of Quercus) and/or beech (Fagus grandifolia), with maples (Acer) and species of hickory and linden or basswood (Tilia) also widespread.

Beech and basswood are rare in other North American vegetation types, but oaks, hickories, and maples are more widespread.

The influence of forest vegetation on water and soil. WILM Associate Dean, State University College of Forestry, Syracuse, New York As a feature of its current program of work, the Forestry Division of FAO is preparing for publication a study on the influence of the forest on water, soil and climate, and their bearing on land-use policy.

Temperate forest - Temperate forest - Fauna: The fauna of temperate forests resembles the regional fauna. However, the structure of the vegetation provides similar ecological niches in all regions of the same vegetation type, so that, although different species inhabit different forests, they are of a similar type.

Tree holes provide homes and nest sites for arboreal mammals and birds in most. vegetation stabilize the forest soil, keeping this natural filter system intact.

Tree & Forest summer day, the coast might be foggy and cool, while inland parts of eastern Oregon are hot and dry. Plants and animals adapt to survive in these various environments and conditions. 8 •Oregon Forest Book | OREGOn FOREST RESOURCES InSTITUTE. During the third phase, a randomly selected sub sample of field established phase 2 plots are visited to collect forest health information.

Critical data are collected pertaining to specific forest health issues such as soils, understory vegetation, and tree damage. Traveling across the state, you soon discover that Oregon is home to a wide range of trees. There are 30 native coniferous species and 37 native species of broadleaf trees.

Oregon varies greatly in terms of elevation, temperature, wind, rainfall and soil composition. Combinations of all these factors help determine the dominant tree species of an area. The soil in a coniferous forest tends to be young and nutrient-poor.

The "thinness" of the soil is usually because of the cold, that hinders the development of soil and the ease, which plants can use its nutrients. Fallen leaves and moss can last on the forest floor for a long time in the cool, moist climate, which limits their organic.

Forest soils are found in the hilly and mountainous areas where sufficient rain forests are available. They are loamy and silty in valley sides and coarse grained in the upper slopes. In the snow covered areas of Himalayas, these soils experience denudation and are acidic with low humus content.To assess this risk, we performed surveys of understory vegetation in areas with a high risk of establishment of understory infection from soil and water sources: along roadsides within heavily trafficked areas with a history of SOD, and along streams known to contain P.

ramorum inoculum.Oregon grape plants are colorful western shrubs with year round appeal and chances are there’s a species that will fit into your Pacific Northwest after Bernard McMahon, an Irish-born American nurseryman, the genus Mahonia is a member of the barberry family (Berberidaceae).

But you may also see Oregon grape classified as Berberis, indicative of the extensive debate among.