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Showing 1 to 20 of 41 for “"site productivity"”.

  1. Estimating Site Productivity from Non-Site Trees: A Site Index Based Approach

    Vopicka, Charles Edward

    Site index (SI) is an indirect measure of potential site quality that is widely used in the Inland Northwest. However, a serious problem exists in applying site curves in the Inland Northwest due to a shortage of suitable 'site' trees. Site trees are explicitly defined for any given set of site …

    montana-tech Repository record

  2. Estimating Site Productivity from Non-Site Trees: A Site Index Based Approach

    Vopicka, Charles Edward

    Site index (SI) is an indirect measure of potential site quality that is widely used in the Inland Northwest. However, a serious problem exists in applying site curves in the Inland Northwest due to a shortage of suitable 'site' trees. Site trees are explicitly defined for any given set of site …

    montana Repository record

  3. Geographic distribution of tree species diversity of the United States reveals positive association between biodiversity and site productivity

    Watson, James V.2019

    … state except Hawaii to map current basal area, site productivity, and tree species diversity across the United States. Based on these point-data maps, I investigated the relationship between forest productivity and tree species diversity. Out of 15 forest types, 13 show a positive association …

    wvu Repository record

  4. Forest Site Productivity of Oaks in Relation to Soil Taxonomic Units, Soil Properties, and Topography in Northern Illinois

    Robles, CamiloUniversity of Illinois at Urbana-Champaign2014

    Made available in DSpace on 2014-12-14T14:37:16Z (GMT). No. of bitstreams: 1 7606929.pdf: 3481781 bytes, checksum: 9766502e340824e83b8fb1d0ac3eb6e2 (MD5) Previous issue date: 1975

    uiuc Repository record

  5. Potential of temporal and spatial analysis techniques as tools for exploring changes in forest site productivity and following environmental interactions : Finnish-German comparative study

    Pérez Martínez, Pedro José

    … is the detection of possible changes in forest site productivity and interaction with changes in the environmental conditions by the use of temporal and spatial analysis techniques. Height and radial increments of Norway spruce (Picea abies L. Karst) and Scots pine (Pinus sylvestris L.) were …

    freiburg-diss Repository record

  6. Woody Species Diversity, Forest and Site Productivity, Stumpage Value, and Carbon Sequestration of Forests on Mined Lands Reclaimed Prior to the Passage of the Surface Mining Control and Reclamation Act of 1977

    Rodrigue, Jason AdamVirginia Tech2001

    … and Reclamation Act (SMCRA) may not achieve site productivity levels required by the law. Anecdotal evidence suggests that many pre-law reforested mined sites are growing productive forests. The purpose of this study was to characterize these forests and the mine soils in which they are …

    vt Repository record

  7. A productivity audit system for construction management in Indonesia

    Kaming, Peter FortunatusUniversity of Wolverhampton1996

    … diagnostic and advisory system) for construction productivity improvement in the Indonesian construction industry. The development of the productivity audit system covered five stages: 1 identification of the characteristics of the construction industry in the country through literature reviews; 2 …

    wlv Repository record

  8. Loblolly Pine and Soil-Site Responses to Harvesting Disturbance and Site Preparation at Stand Closure

    Eisenbies, Mark HaleVirginia Tech2004

    … by heavy machinery might diminish long-term soil-site productivity. However, determining the effect of harvesting disturbance and silvicultural treatments on the long-term productivity of pine plantations is difficult because, in addition to harvesting effects, growth distributions are affected by …

    vt Repository record

  9. Transformation of degraded forests into semi-natural production forests in northern Thailand

    Tennigkeit, Timm

    … Thailand. The aim was to provide information on site and stand conditions and to propose and assess improvement treatments to transform these forests into semi-natural production forests. <br>As a consequence of extensive exploitation and dramatic loss of forest cover, Thailand declared a …

    freiburg-diss Repository record

  10. Predicting Regeneration in Appalachian Hardwood Stands Using the REGEN Expert System

    Vickers, Lance AlanVirginia Tech2009

    … advance reproduction. We developed RKBs for four site productivity classes (xeric, subxeric, submesic, mesic), and tested two (subxeric and submesic) using field collected inventory data in this study. To test the model we collected data from 48 paired sites which contained a mature stand and an …

    vt Repository record

  11. Soil productivity model to assess forest site quality on reclaimed surface mines

    Andrews, Jeffrey AdamVirginia Tech1992

    … mine operators reclaim mined land to achieve productivity levels equal to or greater than premined conditions. Presently, the standard for evaluating reforestation success is based solely on tree-seedling survival. This method is an estimator of stand density and not an indication of site …

    vt Repository record

  12. Physical and Hydrologic Responses of an Intensively Managed Loblolly Pine Plantation to Forest Harvesting and Site Preparation

    Miwa, MasatoVirginia Tech1999

    … past few decades. More recently, harvesting and site preparation practices have become a concern among natural resource managers because intensive forestry practices may alter soil physical properties and site hydrology. These alterations could decrease seedling survival, growth, and future site …

    vt Repository record

  13. Modelling of Biomass Production Potential of Poplar in Short Rotation Plantations on Agricultural Lands of Saxony, Germany

    Ali, WaelTechnische Universität Dresden

    … The current work was concentrated on modelling site productivity (potential of biomass production) of specific poplar clones planted on arable Saxon land under different stocking densities. Empirical data collected from several experimental areas were used. Site productivity has been predicted …

    qucosa-diss

  14. ΤΑΞΙΝΟΜΗΣΗ ΚΑΙ ΕΚΤΙΜΗΣΗ ΠΕΔΙΝΩΝ ΕΔΑΦΩΝ ΛΕΥΚΟΚΑΛΛΙΕΡΓΕΙΑΣ ΣΤΗ Β. ΕΛΛΑΔΑ

    Χατζόπουλος, ΑριστείδηςΑριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ)1990

    … SOIL STRUCTURE AND HYDROLOGICAL CONDITIONS. BEST SITES FOR POPLAR CLASSES I AND II, ARE SANDY, LOAMY AND CLAY LOAMYSOILS WITH GROUND WATER SURFACE BETWEEN 80CM AND 250CM MOST OF THE YEAR. LIGHTTEXTURED SOILS, LOAMY SAND WITH RICH IN ORGANIC MATTER HORIZONS IN DEPTH MORE THAN 80CM, OR CLAY AND …

    greece Repository record

  15. Ecology of greater gliders, Petauroides Volans Kerr 1792, in relation to variations in habitat quality in eucalypt forests in south-east New South Wales

    Norton, Tony Wallace1988

    … forests, and these were tested at two forest sites in south-eastern N.S.W. by studying and comparing the ecology of P. votans at these sites. One site of 24.6 ha at Wadbilliga carried four species of eucalypt (E. dalrympleana, E. fastigata, E. radiata, E. viminalis}. These had high …

    aus-cath Repository record

  16. Ecology of greater gliders, Petauroides Volans Kerr 1792, in relation to variations in habitat quality in eucalypt forests in south-east New South Wales

    Norton, Tony Wallace1988

    … forests, and these were tested at two forest sites in south-eastern N.S.W. by studying and comparing the ecology of P. votans at these sites. One site of 24.6 ha at Wadbilliga carried four species of eucalypt (E. dalrympleana, E. fastigata, E. radiata, E. viminalis}. These had high …

    anu Repository record

  17. Development and testing of climate-sensitive site index models for long rotation Eucalyptus grandis in Limpopo province of South Africa

    Venter, KunoStellenbosch : Stellenbosch University2026

    … Accurate prediction of height growth and site productivity in Eucalyptus grandis plantations has become increasingly important as the forestry sector faces rising climatic variability and long-term shifts in temperature and rainfall regimes. Although numerous growth and yield studies exist …

    stellenbosch Repository record

  18. Harvesting effects on the hydrology of wet pine flats

    Preston, David P.Virginia Tech1996

    … United States. Wet-weather logging of these sites causes extensive rutting and churning of the soil surface and may alter the subsurface flow of soil water. An operational-scale experiment was established in 20-year-old loblolly pine (Pinus taeda) plantations to determine the hydrologic …

    vt Repository record

  19. MODELING DIAMETER DISTRIBUTION OF LOBLOLLY PINE PLANTATIONS IN RESPONSE TO MID-ROTATION THINNING TREATMENTS AND ASSING THE ECONOMIC RETURNS IN WESTERN GULF COASTAL PLAIN

    Rijal, Pragya, Weng, Yuhui, Shrestha, Anusha, Grogan, Jason2026

    … returns, particularly on higher-quality sites. An analysis of variance revealed statistically significant effects of both site quality and timber product class on revenue outcomes (p < 0.001). These findings highlight the importance of aligning thinning intensity with site productivity to …

    sfasu Repository record

  20. Soil based vegetation productivity modeling for a northern Michigan surface mining region

    Corr, Dustin L.2012

    ABSTRACTSOIL BASED VEGETATION PRODUCTIVITY MODELING FOR A NORTHERN MICHIGAN SURFACE MINING REGIONByDustin L. CorrThe proliferation of mined landscapes and concern for the environmental impacts associated with these lands have led to an increased interest in developing empirical predictive models to …

    msu Repository record

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