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Preliminary assessment of tree mortality near F- and H-area seepage basins

Description: A preliminary assessment was conducted to evaluate factors that may have been responsible for the vegetation damage that has occurred in groundwater seeps downslope from the F- and H-area seepage basins. The factors that were considered included altered hydrology, toxicity from hazardous chemical constituents associated with seepage basin operation, and toxicity from non-hazardous constituents associated with basin operation. It was concluded that the observed damage was not likely to have resu… more
Date: January 28, 1988
Creator: Loehle, C & Gladden, J
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Floristic composition and plant succession on near-surface radioactive-waste-disposal facilities in the Los Alamos National Laboratory

Description: Since 1946, low-level radioactive waste has been buried in shallow landfills within the confines of the Los Alamos National Laboratory. Five of these sites were studied for plant composition and successional patterns by reconnaissance and vegetation mapping. The data show a slow rate of recovery for all sites, regardless of age, in both the pinon-juniper and ponderosa pine communities. The sites are not comparable in succession or composition because of location and previous land use. The two o… more
Date: March 1, 1982
Creator: Tierney, G.D. & Foxx, T.S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Eucalyptus plantations for energy production in Hawaii. Technical status report, October 1, 1978-June 30, 1980

Description: Progress made on accomplishing research objectives is reported. The objectives of this project are: (1) to increase the biomass production of Eucalyptus; (2) to determine the optimum requirements to maximize yield; (3) to assess planting, cultivation, harvesting, and transportation equipment requirements; (4) to determine the optimum mixture of biomass (eucalyptus and bagasse) at the generator for the production of electricity; and (5) to evaluate a complete production/conversion system which u… more
Date: July 14, 1980
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Optimization of steam explosion pretreatment. Final report

Description: Different operating conditions are required to optimize the yield from each of the various fractions in the substrate. Xylose recovery is maximized at short cooking times whereas maximum lignin recovery requires much longer cooking times. Peak glucose yield and rumen digestibility occur at intermediate times. If process conditions are set for maximum glucose yield we have achieved a yield of 68% of the theoretical, based on an average of a dozen substrates tested. Individual results ranged from… more
Date: April 1, 1980
Creator: Foody, P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Initial evaluation of photographic data of F- and H-Area seepage basin outcrops

Description: Photographic data for the Savannah River Plant (SRP) were reviewed for 1961 through 1987 to determine the value of this photography in estimating the timing and extent of the F- and H-Area seepage basin outcrops along the upper Four Mile Creek floodplain. In excess of 15,000 frames of photography of the SRP were reviewed. The quality of the photography varied widely and included panchromatic (black and white), natural color, and false color infrared. Altitudes of the photography ranged from 2,0… more
Date: February 8, 1988
Creator: Mackey, H. E., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Studies of air pollution effects on vegetation

Description: The report consists of three parts which summarize pollutant-vegetation effects research studies. These include: oxidant effects of primary productivity in ponderosa pine in the San Bernardino National Forest; air pollution effects on vegetation related to geothermal power development; and regional assessment of air pollution impact on vegetation by mathematical modeling. A list of publications that report results of the studies is included in an appendix.
Date: January 1, 1978
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Role of temperate zone forests in the world carbon cycle: problem definition and research needs

Description: The proceedings of a workshop on carbon uptake and losses from temperate zone forests are presented. The goals of the workshop were to analyze existing data on growth and utilization of the temperate zone forest carbon pool and to identify further research needs in relation to the role of temperate forests in the global carbon cycle. Total standing stock and growth recovery transients were examined for most of the temperate region over a period from pre-settlement times to the present, with emp… more
Date: January 1, 1979
Creator: Armentano, T.V. & Hett, J. (eds.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Sludge application program at the Savannah River Plant

Description: Since 1980 a research program has been conducted at the Savannah River Plant to evaluate the use of domestic sewage sludge to enhance forest productivity. The objectives of the program have been to determine the cost effectiveness and environmental impact of using sewage sludge as a soil conditioner and slow-release fertilizer. The potential impacts of sludge application on nutrient cycling, organic carbon budgets, forest wildlife, and biomass production have been studied. Soil, soil water, gro… more
Date: January 1, 1985
Creator: Corey, J. C.; Lower, M. W. & Davis, C. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Energy sensitivity and variability analysis of Populus hybrid short-rotation plantations in northeastern United States. Final report

Description: Production of biomass by corn-like plantations has been demonstrated by a number of researchers. These forest analogs of agronomic cropping systems have the potential to yield substantially more biomass per unit area than traditional forests. Care is needed in choosing the appropriate sites, species, spacing, and harvesting strategies. Opportunities for increased yields have been suggested for fertilization and irrigation. Utilization of the biomass from these dense plantations for energy was t… more
Date: October 24, 1979
Creator: Bowersox, T.W. & Blankenhorn, P.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Isotope studies to determine dry deposition of sulfate to deciduous and coniferous trees: Final draft

Description: Experiments have been conducted at two locations near Oak Ridge, Tennessee, with radioactive /sup 35/S (87 day half-life) to examine the cycling behavior of sulfur in yellow poplar (Liriodendron tulipifera), red maple (Acer rubrum), and loblolly pine (Pinus taeda) trees. Some findings pertain to methods development for estimating dry deposition of sulfur to forest canopies and the magnitude of sulfur emissions from natural sources (Task II). We will determine through field studies, the internal… more
Date: January 1, 1988
Creator: Garten, C. T. Jr.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Cooling our communities: A guidebook on tree planting and light-colored surfacing

Description: This book is a practical guide that presents the current state of knowledge on potential environmental and economic benefits of strategic landscaping and altering surface colors in our communities. The guidebook, reviews the causes, magnitude, and impacts of increased urban warming, then focuses on actions by citizens and communities that can be undertaken to improve the quality of our homes and towns in cost-effective ways.
Date: January 1, 1992
Creator: Akbari, H.; Davis, S.; Huang, J. (eds.) (Lawrence Berkeley Lab., CA (United States)); Dorsano, S. (ed.) (The Bruce Co., (United States)) & Winnett, S. (ed.) (Environmental Protection Agency, Washington, DC (United States). Climate Change Div.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Biological production of liquid fuels from biomass. Annual report, September 1, 1978-August 31, 1979

Description: The production of liquid fuels from renewable resources such as poplar wood and lignocellulosic wastes from a refuse hydropulper were studied. The particular scheme being studied involves the conversion of a cellulosic residue, resulting from a solvent delignified lignocellulosic feed, into either high concentration sugar syrups or into ethyl and/or butyl alcohol. The process is aimed at achieving total raw material utilization and maximization of high value by-product recovery. Specific goals … more
Date: January 1, 1979
Creator: Pye, E.K. & Humphrey, A.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fundamentals of solar access

Description: The following aspects of solar access are discussed: solar geometry, topography, orientation, trees and vegetation, design options, and legal questions. (MHR)
Date: July 1, 1981
Creator: Levin, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Ecological effects of pipeline construction through deciduous forested wetlands, Midland County, Michigan

Description: Implementation of recent federal and state regulations promulgated to protect wetlands makes information on effects of gas pipeline rights-of-way (ROWs) in wetlands essential to the gas pipeline industry. This study is designed to record vegetational changes induced by the construction of a large-diameter gas pipeline through deciduous forested wetlands. Two second-growth forested wetland sites mapped as Lenawee soils, one mature and one subjected to recent selective logging, were selected in M… more
Date: July 1, 1991
Creator: Zellmer, S. D.; Rastorfer, J. R. & Van Dyke, G. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Vegetation survey of PEN Branch wetlands

Description: A survey was conducted of vegetation along Pen Branch Creek at Savannah River Site (SRS) in support of K-Reactor restart. Plants were identified to species by overstory, understory, shrub, and groundcover strata. Abundance was also characterized and richness and diversity calculated. Based on woody species basal area, the Pen Branch delta was the most impacted, followed by the sections between the reactor and the delta. Species richness for shrub and groundcover strata were also lowest in the d… more
Date: January 1, 1991
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

[River]

Description: Photograph of a river flowing rapidly around a tree fallen in the water. The river flows through a heavily wooded area.
Date: 194X
Creator: Clark, Joe
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections

[A path in the woods]

Description: A path in the woods where anyone can dream of what they want to be or what they have already done. Beautiful country that Joe Clark, HBSS, remembers from his childhood.
Date: 194X
Creator: Clark, Joe
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections

[Road]

Description: Photograph of a dirt road winding through a wooded hill side. There is a wire fence running along side of the road.
Date: 194X
Creator: Clark, Joe
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections

[Farm in the hills]

Description: Photograph of a boy standing in a cornfield. The field wraps around a large wooded area centered in the hills. There are farm buildings visible in the background as well as a mountain range.
Date: 194X
Creator: Clark, Joe
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections
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