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Tuesday, May 12, 2020 | History

2 edition of Effects of windthrow on soil properties and spatial variability in southeast Alaska found in the catalog.

Effects of windthrow on soil properties and spatial variability in southeast Alaska

Fred Howard Bowers

Effects of windthrow on soil properties and spatial variability in southeast Alaska

by Fred Howard Bowers

  • 210 Want to read
  • 25 Currently reading

Published by United States Dept. of Agriculture, Forest Service, Alaska Region in [Alaska] .
Written in English

    Places:
  • Alaska.
    • Subjects:
    • Forest soils -- Alaska.,
    • Windfall (Forestry) -- Alaska.

    • Edition Notes

      Statementby Fred Howard Bowers.
      Classifications
      LC ClassificationsSD390.3.A4 B69 1987
      The Physical Object
      Paginationix, 185 p. :
      Number of Pages185
      ID Numbers
      Open LibraryOL3597650M
      LC Control Number2002320168
      OCLC/WorldCa17870719

      Managing Alaska Soils Essential Soil Science Topics for the. Commercial and Backyard Crop Producer. growth through their effect on the chemical, biologi-cal and physical properties of the soil. Humus serves ence on soil chemical properties. In addition, . Effects of wildfire and permafrost on soil organic matter and soil climate in interior Alaska Topography controls post-fire changes in soil properties in a Chinese boreal forest, Science of The Total Environment, Nonlinear responses of white spruce growth to climate variability in interior Alaska, Canadian Journal of Forest Research,

      Few studies have examined the influence of natural disturbances, such as windthrow, on soil organic matter formation, stabilization, and loss in soils. In shallow (windthrow activity may result in the redistribution and mixing of mineral and organic soil horizons down to by: In a comparative study of mounds with mean ages of approximat , and > years in coniferous rainforests of southeast Alaska, Den Ouden and Alaback found that the role of windthrow in the maintenance of high understory diversity was more or less restricted to the first decades after the disturbance. With diminishing habitat heterogeneity and environmental conditions that become less Cited by: 3.

      GPR Burns, L.E., Graham, G.R.C., Barefoot, J.D., American Copper & Nickel Company, Inc., Geoterrex-Dighem, and WGM, Inc., , Dolomi electromagnetic and. Wind disturbance plays a fundamental role in shaping forest dynamics in southeast Alaska. Recent studies have increased our appreciation for the effects of wind at both large and small scales. Current thinking is that wind disturbance characteristics change over a continuum dependent on landscape features (e.g., exposure, land-.


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Effects of windthrow on soil properties and spatial variability in southeast Alaska by Fred Howard Bowers Download PDF EPUB FB2

The effect of windthrow disturbances on biochemical and chemical soil properties in the northern mountainous forests of Iran. F.H. BowersEffects of Windthrow on Soil Properties and Spatial Variability in Southeast Alaska (Ph.D.

Thesis) University of Washington, USA () Google by: Processes responsible for the development of a pit and mound microrelief. Effects of windthrow on soil properties and spatial variability in Southeast Alaska.

PhD thesis, University of Washington, USA. Google Scholar. Corbel, Cited by: This is a measure of the spatial extent within which soil properties show a strong correlation.

A large value of δ implies that the soil property is highly correlated over a large spatial extent, resulting in a smooth variation within the soil profile. On the other hand, a small value indicates that the fluctuation of the soil property is large (Li and Lumb, ).Cited by: If we consider the effect of variation in k on soil respiration only, the extra loss of carbon during the first rotation period after a storm would be, and kg C m À2 for k of 5.

An analysis of the effects of spatial variability of soil and soil moisture on runoff Bruno Merz GeoForschungsZentrum Potsdam, Potsdam, Germany Erich J. Plate Institute for Hydrology and Water Resources Planning, University of Karlsruhe, Karlsruhe, Germany by: gated in literature using deterministic approaches where average values of the soil properties were used.

In this paper, a probabilistic dynamic approach is presented for the slope stability analysis. In this approach, the effect of the soil spatial variability on the dynamic responses was investigated.

We investigated successional trends on windthrow mounds in two old-growth Tsuga heterophylla-Picea sitchensis forests in northern southeast Alaska to determine the influence of windthrow disturbance on the maintenance of plant diversity.

We were particularly interested in assessing the value of mosses in detecting long-term effects of disturbance in temperate by: explicitly account for the effect of the spatial variability of soil properties.

The RFEM is adopted in this paper to investigate the effect of spatial variability on the reliability of a soil slope. Kramer et al. () followed the carbon dynamics across wind-disturbed stands of various ages in Alaska and found remobilization and transport of carbon between fractions in the soil and vegetation.

These examples suggest that carbon stores are relatively robust to windthrow disturbances, but if the frequency of severe windstorms were to. Introduction [2] Soil moisture is an important variable in many land surface models since it controls the partitioning of fluxes of both water and energy.

However soil moisture shows a large spatial variability, and the relation between soil moisture dynamics at a point (i.e., the scale of most observations) and that of a larger area (field, region) are still poorly by: Vol.

85, No. 8, Aug., Published by: Wiley on behalf of the Ecological Society of America. Soil Carbon Dynamics across a Windthrow Disturbance Sequence in Southeast Alaska.

Soil Carbon Dynamics across a Windthrow Disturbance Sequence in Southeast Alaska (pp. Bowers F () Effects of windthrow on soil properties and spatial variability in Southeast Alaska.

PhD Thesis, University of Washington, Seattle Google Scholar Brewer SW, Rejmanek M, Webb MAH, Fine PVA () Relationship of phytogeography and diversity of tropical tree species with limestone topography in southern : Khan Towhid Osman. Cellulose decomposition in southeast Alaskan forests: effects of pit and mound Effects of windthrow on soil properties and.

spatial variability in southeast Alaska. Ph.D. dissertation, Uni. Effects of windthrow disturbance on a forest bird community depend on spatial scale.

characteristics in areas prone to and protected from windthrow. On Kuiu Island, southeast Alaska, we used. Kramer MG, Sollins P, Sletten RS () Soil carbon dynamics across a windthrow disturbance sequence in southeast Alaska.

Ecology – CrossRef Google Scholar Lavoie S, Ruel J-C, Bergeron Y, Harvey BD () Windthrow after Cited by: 3. The aims of this study were to compare elevation data obtained from a combine harvester yield monitor and a hand RTK-GPS, and to evaluate the relationships between the spatial variation of cereal yield, selected crop nutrient concentration and topographic attributes derived from the two sources of elevation by: In this approach, the effect of both the soil spatial variability and the variability of the Ground-Motion (GM) time history on the dynamic responses (amplification, permanent displacement) are studied and discussed.

The soil shear modulus G is considered as an isotropic non-Gaussian random field. Information of these soil-forming factors can be used to capture and predict the spatial variation of soil properties, e.g., illustrated for soil organic carbon (SOC) stocks over Alaska [Mishra.

windthrow. On Kuiu Island, southeast Alaska, we used field validation photo-interpretation procedures to identify forest patches likely to be of windthrow origin.

A spatially explicit logistic model was then built from the windthrow data and other GIS data layers, based on slope, elevation, soil type, and exposure to prevailing storm winds. Analysis of the spatial variability of soil properties is important to explain the site-specific ecosystems.

Spatial patterns of some soil properties such as soil texture, exchangeable sodium percentage (ESP), electrical conductivity (ECe), soil pH and cation exchange capacity (CEC) were analyzed in salt and sodic affected soils in the south of the Ardabil province, in the northwest of Cited by:.

variability with progressively higher elevation ecosystems illustrates the ability of vegetation to dampen the variability of both parameters. Keywords: soil moisture, snow water equivalent, spatial variability, lognormal distribution INTRODUCTION Snowmelt is usually the most important annual hydrological event in streams draining northern regions.John J.

Finnigan, in Plant Disturbance Ecology, Windthrow and Crop Lodging. This subject is treated in much more detail in Chapter I simply make the connection between the properties of the turbulent wind field in canopies and the key factors contributing to erable work has been done in the last two decades on the detailed mechanisms by which individual trees or.While no direct interactions among plants and SOM properties could be determined, plants significantly affected soil microclimate.

Windthrow had no obvious effect on F s because reduced autotrophic soil respiration (R a) was offset by a ∼60% increase in heterotrophic soil respiration (R h), principally due to increased soil by: