Stand-density study of spruce-hemlock stands in southeastern Alaska

Stand-density study of spruce-hemlock stands in southeastern Alaska by Donald J. DeMars Download PDF EPUB FB2

Sarg.)-Sitka spruce (Picea sitchensis (Bong.) Carr.) stands in southeastern Alaska served as the impetus for a long-term stand-density study begun in The study has followed permanent growth plots in managed stands under various thinning regimes. Between andplots were established at 59 locations throughout southeastern ?index= Download Citation | Stand-density study of spruce-hemlock stands in southeastern Alaska | The lack of growth and yield information for young even-aged western hemlock (Tsuga heterophylla (Raf.) Get this from a library.

Stand-density study of spruce-hemlock stands in southeastern Alaska. [Donald J DeMars; Pacific Northwest Research Station (Portland, Or.)] Stand-density study of spruce-hemlock stands in southeastern Alaska / Donald J.

DeMars. By Donald J. DeMars. Abstract. 60 p. Topics: Forest thinning--Alaska--Alaska Panhandle., Forest thinning--Alaska--Alaska Panhandle, Sitka spruce--Alaska   Keywords: Thinning, stand density, southeastern Alaska, western hemlock, Sitka spruce.

Extensive harvesting of old-growth stands in the Tongass National Forest began in the s. A sufficient number of young-growth stands were not available to initiate a comprehensive growth and yield study until the s.

In research began to stand. Pure stands were excluded from this study, for the reason just given and because they are not typical.

A stand on the Tongass National Forest that is typical of second- growth timber in southeastern Alaska is shown in plate 1. Almost any area in southeastern Alaska on which the mineral soil   Maximum Stand-Density Index of 40 Western Hemlock–Sitka Spruce Stands in Southeast Alaska Nathan J.

Poage, David D. Marshall, and Michael H. McClellan Reineke’s () maximum stand-density index (SDI max) was determined for 40 unthinned, fully stocked, even-aged, hemlock-spruce stands in southeast :// Whole-stand models predict the growth of stand attributes of forest ecosystems, such as basal area, stand volume, or stand area is the summation of the cross-sectional area at breast height (usually m aboveground) of individual tree stems appropriately weighted to reflect a particular unit area (e.g., 1 ha).

Stand volume (e.g., m 3 ha − 1) is the summation of the volume of Picea sitchensis (Bong.)Carr. Sitka Spruce. Pinaceae -- Pine family. Harris. Sitka spruce (Picea sitchensis), known also as tideland spruce, coast spruce, and yellow spruce, is the largest of the world's spruces and is one of the most prominent forest trees in stands along the northwest coast of North coastal species is seldom found far from tidewater, where moist maritime   Growth and yield of well-stocked white spruce stands in Alaska.

USDA, Forest Service. Pacific Southwest Forest and Range Experiment Station Research Note PSW Farr, Wilbur A. Site index and height growth curves for unmanaged even-aged stands of western hemlock and Sitka spruce in southeast Alaska.

USDA, Forest ://   The Tongass National Forest (Tongass) is the largest national forest and largest area of old-growth forest in the United States.

Spatial geographic information system data for the Tongass were combined with forest inventory data to estimate and map total carbon stock in the Tongass; the result was ± Pg C, or 8% of the total carbon in the forests of the conterminous USA and % of Hanley, T.A. and C.L. Rose. Influence of overstory on snow depth and density in hemlock-spruce stands: implications for management of deer habitat in southeastern Alaska.

Res. Note PNW-RN USDA Forest Service, Pacific Northwest Research Station, Portland, OR. 11 The mean SDImax of the 40 hemlock-spruce stands in southeast Alaska was Individually, none of the stand or site factors examined accounted for >30% of the variability observed in SDImax when   Study Title: Effects of Forest Fragmentation on Deer in Southeast Alaska.

Period Covered: 1 July June SUMMARY. As logging causes residual stands of old growth to become smaller and more insular, their value to Sitka black-tailed deer (Odocoileus hemionus sitkensis) during the winter is expected to   Accounting for carbon gains and losses in young-growth forests is a key part of carbon assessments.

A common silvicultural practice in young forests is thinning to increase the growth rate of residual trees. However, the effect of thinning on total stand carbon stock in these stands is uncertain.

In this study we used data from long-term growth and yield plots to quantify the carbon stock   banks of southeastern Alaska forests and how seedling banks might be affected by partial cutting. The objective of this study was to document and describe the seedling bank of Sitka spruce and western hemlock in partially cut stands in southeast Alaska.

We studied the density, size, age, seedbed, and growth rates of Sitka spruce seedlings   The effects of partial cutting on tree size structure and stand growth were evaluated in 52 plots in 13 stands in southeast Alaska that were partially harvested 53–96 years ago and compared with year-old even-aged stands that developed after clearcutting.

The net basal-area growth was greater in the partially cut plots than in the uncut plots, and basal-area growth generally increased Get this from a library. Influence of overstory on snow depth and density in hemlock-spruce stands: implications for management of deer habitat in southeastern Alaska.

[Thomas A Hanley; Cathy L Rose; Pacific Northwest Research Station (Portland, Or.)]   Influence of overstory on snowdepth and density in hemlock-spruce stands: Implications for management of deer habitat in southeastern Alaska.

Res. Note PNW-RN Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research  › 百度文库 › 行业资料. Abstract. We studied the Prince of Wales flying squirrel (Glaucomys sabrinus griseifrons) in temperate rain forest of southeastern Alaska to provide the 1st quantitative estimates of demography from southeastern Alaska and test predictions of the hypothesis that Sitka spruce (Picea sitchensis)-western hemlock (Tsuga heterophylla) forest is primary habitat for G.

sabrinus in southeastern ://. Douglas-fir stands in western Oregon and Washington. the stands has had an important influence on stand structure. The study provides a basis for defining and taking inventory growth western hemlock-Sitka spruce forests in southeastern Alaska.

Most quantitative studies in Douglas-fir forests We briefly describe the silvics of Sitka spruce, western hemlock and red alder plantations as pure conifer stands or pure broadleaf stands.

Then, we synthesize studies of mixed red alder-Sitka spruce/western hemlock stands in southeast Alaska and present their potential for improving stand structural complexity, biodiversity and other ecosystem   stands.

This study provides data on snow-overstory interactions, and discusses the implications for the manageMent of deer in southeast Alaska. Additional background and justification for this study were outlined previously by Schoen et al.

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