ESTIMATION of SEQUESTERED CARBON in KING COUNTY FORESTS

s of Publications T.J., Davis. , B. Klinkenberg, and C.P. Keller. Updating Inventory Using Oblique Videogrammetry and Data Fusion. Journal of Forestry, March 2002, vol. 100, no. 2, pp. 45-50(6) It is often necessary to make a tradeoff between the cost of generating a new inventory and the need for up-to-date information to facilitate management. Yet, in some cases, only specific areas need to be updated. Here we introduce a system for fast, cost-efficient inventory update that fuses oblique video with GIS-based data. The oblique view also serves to reduce the issue of cloud cover, makes interpretation easier, and enables nonstereoscopic aerial measurement of height. Tests indicate that the data produced compare favorably with high-resolution orthoimagery. G.K. Sims and M.M. Wander. Proteolytic Activity Under Nitrogen or Sulfur Limitation. Applied Soil Ecology, March 2002, vol. 19, no. 3, pp. 217-221(5) Sand cultures were used to evaluate the effect of C, N, and S ratio on protein degradation by soil microorganisms. Sand was inoculated with soil and amended with defined nutrient media to produce limitation for C, N, or S. Limitation for N or S resulted in reduced biomass (total protein) and increased proteolytic activity as indicated by measurements of dye released from a commercial protease substrate (azocoll). Carbon limitation had little effect on proteolytic activity. As expected, utilization of carbon (glucose) was dependent upon the availability of N or S. Protein synthesis inhibitors (chloramphenicol and cycloheximide) suppressed proteolytic activity, suggesting a need for new gene expression in the response of organisms to N or S stress. Correlations of proteolytic activity and biomass among treatments revealed distinctly different relationships depending upon the availability of C, N, or S. The results of this experiment support a role of proteolytic activity in response of microorganisms to N or S deprivation and suggest that protease activity in soil is more strongly influenced by regulatory signals than by standing biomass. C.F. Scagel and R.G. Linderman. Modification of Root IAA Concentrations, Tree Growth, and Survival by Application of Plant Growth Regulating Substances to Container-Grown Conifers. New Forests, March 2001, vol. 21, no. 2, pp. 159186(28) Tree survival after planting is partially a function of the tree's capacity to produce new roots. In a field trial we assessed the potential to modify the IAA concentration in roots, root growth responses, and plant survival by root application of plant growth regulators (PGRs) such as IBA, NAA, and ethylene, or alginate, a moisture retention material. Container-grown Douglas-fir, Englemann spruce, and lodgepole pine were lifted before and during prescribed lifting windows and treated with Stimroot®, Ethrel®, Hormogel®, or alginate before or after cold-storage, then planted in a clearcut. Lifting trees outside of the prescribed lifting window decreased IAA concentrations in roots of Douglas-fir, Englemann spruce, and lodgepole pine. Treating plants with different PGRs after cold storage increased root IAA concentrations and root growth after planting compared to treating plants prior to cold storage. Root growth and above ground plant growth and survival were well correlated to IAA concentrations in roots of Douglas-fir and Englemann spruce. IAA concentrations in roots of lodgepole pine correlated with root growth, but did not correlate with survival. A cost analysis of treatment effects on growth and survival showed that certain post-cold storage PGR treatments can decrease the cost necessary to attain target stocking and increase the size of the trees. Our results suggest that application of PGRs or other rootpromoting materials to tree roots before planting has the potential to be a costbeneficial method for increasing root growth and tree survival. T.L. Noland, G.H. Mohammed, and R.G. Wagner. Morphological Characteristic Associated with Tolerance to Competition from Herbaceous Vegetation for Seedlings of JackPine, Black Spruce, and White Pine. New Forests, May 2001, vol. 21, no. 3, pp. 199-215(17) Tolerance of bareroot and containergrown seedlings of black spruce (Picea mariana (Mill.) B.S.P.), jack pine (Pinus banksiana Lamb.), and eastern white pine (Pinus strobus L.) to competition from herbaceous vegetation was examined in the first five years after planting on a site in the Great Lakes/St. Lawrence forest of Ontario, Canada. Shoot and root morphological characteristics of various stocktypes were measured before planting and correlated with 5-year survival and growth following control and no control of herbaceous vegetation. For black spruce and jack pine, mediumsized bareroot stocktypes had greater relative 5-year stem volume growth in the presence of herbaceous vegetation than did container stock of either species or large bareroot stock of spruce. Relative volume growth was measured as the ratio of the cumulative stem volume increment in the presence of vegetation (Veg) to that in the absence of vegetation (NoVeg), i.e., the Veg:NoVeg ratio. In white pine, the Veg:NoVeg ratio of volume increment of medium container and large bareroot stocktypes exceeded that of small container and medium bareroot stocktypes. In jack pine, root collar diameter at planting and number of first-order lateral roots were positively correlated with 5-year Veg:NoVeg ratio of volume increment. In white pine, the Veg:NoVeg ratio was also positively correlated with root collar diameter at planting and with root volume. In black spruce, the ratio was not related to preplant morphology. Thus, for white pine and jack pine, certain pre-plant morphological features may be useful in forecasting the relative ability of different stocktypes to grow under herbaceous competition conditions in the field. College of Forest Resources University of Washington Box 352100 Seattle WA 98195 SMC PUBLICATIONS The following can be downloaded free of charge from the SMC web site, (http://www.standmgt.org), or you may purchase bound copies at the indicated price. To order please contact Megan O’Shea at moshea@u.washington.edu, or 206.543. 9744. Flewelling, J., Collier, R. , Gonyea, B. , Marshall, D. , Turnblom, E. Height-Age Curves for Planted Stands of Douglas fir, with Adjustments for Density, $10.00 Briggs, D. , Trobaugh, J. Management Practices on Pacific Northwest West-Side Industrial Forest Lands, 1991-2000: With Projections to 2005, $30.00 OTHER PUBLICATIONS Briggs, D. Forest Products Measurements and Conversion Factors-With Special Emphasis on the U.S. Pacific Northwest, $23.00. http://www.cfr. washington.edu/news_pubs/Pubs/index.htm. It is also available free on the web at www.ruraltech. org/. Click Projects, click Conversion Factors Calculator, then click the book title followed by the chapter of interest. A new on-line calculation version is presently under development. Proceedings of the First International Precession Forestry Cooperative Symposium, June 17-20, 2001, $15.00, or download a copy free of charge from the PFC web site:http://www.cfr. washington.edu/research.pfc/updates/index.htm. To order please contact Megan O’Shea at moshea@u.washington.edu, or 206.543. 9744