Relevant bibliographies by topics / Soil Site Index

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Soil Site Index'

Author: Grafiati
Published: 2 June 2025
Last updated: 31 July 2025

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Journal articles on the topic "Soil Site Index"

1

Schmidt, Margaret G., and Willard H. Carmean. "Jack pine site quality in relation to soil and topography in north central Ontario." Canadian Journal of Forest Research 18, no. 3 (1988): 297–305. http://dx.doi.org/10.1139/x88-046.

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Site index for jack pine (Pinusbanksiana Lamb.) was determined by stem analysis using dominant and codominant trees on each of 99 site plots located in mature, well-stocked, even-aged jack pine stands. Plots located on four major glacial soil groups showed a wide range of site index within each soil group. Separate multiple regression analysis showed that site index was significantly related to different soil and topographic features for each soil group: (i) for morainal soils shallow to bedrock (< 1.0 m deep) (R2 = 0.83), depth to bedrock and coarse fragment content; (ii) for deep morainal
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Carmean, Willard H., and Janjun Li. "Soil-Site Relations for Trembling Aspen in Northwest Ontario." Northern Journal of Applied Forestry 15, no. 3 (1998): 146–53. http://dx.doi.org/10.1093/njaf/15.3.146.

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Abstract Past harvesting in Northwest Ontario has produced increased regeneration and increased forest areas supporting trembling aspen stands, resulting in greatly increased utilization of aspen. Thus there is a critical need to accurately estimate site quality and growth and yield for trembling aspen and for identifying productive sites where more intensive aspen forest management can be practiced. Soil-site relations were studied using 95 plots located in mature, fully stocked, evenaged, undisturbed trembling aspen stands. On each plot site index (SIBH50) estimation was based on stem analys
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Seymour, Robert S., and Mary Ann Fajvan. "Influence of Prior Growth Suppression and Soil on Red Spruce Site Index." Northern Journal of Applied Forestry 18, no. 2 (2001): 55–62. http://dx.doi.org/10.1093/njaf/18.2.55.

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Abstract Dominant trees of shade tolerant species are often unsuitable for estimating site index because episodes of growth suppression can mask influences of site. A large-scale study in eastern Maine, based on 698 red spruce (Picea rubens) trees sampled with increment cores, and 92 trees sampled by stem analysis, addressed two objectives: (1) Can spruce trees with histories of suppression be used to estimate site index if suppressed periods are converted to free-growth equivalents? and (2) Do important differences in soil physical properties based on drainage and profile characteristics corr
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Farrelly, Niall, Áine Ní Dhubháin, and Maarten Nieuwenhuis. "Site index of Sitka spruce (Picea sitchensis) in relation to different measures of site quality in Ireland." Canadian Journal of Forest Research 41, no. 2 (2011): 265–78. http://dx.doi.org/10.1139/x10-203.

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To examine the relationships between Sitka spruce (Picea sitchensis (Bong.) Carr.) site index and site quality variables, we sampled 201 Sitka spruce stands covering the entire range of sites supporting the growth of the species in Ireland. Site index varied significantly with climate and climate surrogate variables, some site quality variables, soil physical and chemical properties, edatopes (combinations of soil nutrient and moisture regimes), rotation types, provenance, and fertilizer regimes. We developed a series of models to predict site index using climate, site, soil physical and chemi
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Scharenbroch, B. C., L. Scheberl, J. C. Gebhard, J. R. Prater, and L. P. Werner. "Towards an Improved Rapid Urban Site Index." Arboriculture & Urban Forestry 49, no. 2 (2023): 90–104. http://dx.doi.org/10.48044/jauf.2023.008.

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Background: An urban site index is an approach for identifying site quality for optimal matching of urban tree tolerances to site conditions and for determining the efficacy of soil management actions. The Rapid Urban Site Index (RUSI) was previously developed and found to significantly relate to urban tree performance. However, the RUSI needs further testing to verify its accuracy in other urban tree populations. Furthermore, calibration of the RUSI with parameter weighting and additional parameters might also improve its accuracy. Methods: The objectives of this study are to: (1) evaluate th
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Chen, Han YH, Karel Klinka, and Richard D. Kabzems. "Site index, site quality, and foliar nutrients of trembling aspen: relationships and predictions." Canadian Journal of Forest Research 28, no. 12 (1998): 1743–55. http://dx.doi.org/10.1139/x98-154.

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To examine the relationships between trembling aspen (Populus tremuloides Michx.) productivity, environmental attributes, and foliar nutrients and to make accurate predictions of trembling aspen productivity, we sampled 60 naturally established, fire-originated, and even-aged trembling aspen stands in northern British Columbia. Trembling aspen site index significantly varied with latitude, elevation, aspect, slope position, edatopes, some forest floor and mineral soil physical and chemical properties, and concentrations of some foliar nutrients. To predict site index, we developed multiple lin
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Klinka, Karel, Gordon J. Kayahara, and Qingli Wang. "Quantitative characterization of nutrient regimes in some boreal forest soils." Canadian Journal of Soil Science 74, no. 1 (1994): 29–38. http://dx.doi.org/10.4141/cjss94-004.

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In order to assess to what extent soil nutrient properties support differentiation of field-identified soil nutrient regimes, composite samples from each forest floor and 0–30 cm of the mineral soil were collected from 116 forest stands in central British Columbia. The samples were analyzed for acidity, total carbon (tC), total nitrogen (tN), mineralizable-N (min-N), and extractable Ca, Mg, K, P, and SO4-S (eCa, eMg, eK, eP, eSO4); and the results were expressed as concentrations on a dry-mass basis. Mineralizable-N of the mineral soil showed (1) the largest amount of variation in the populati
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Anwar, Chairil. "PREDICTION OF TEAK BONITA (SITE INDEX) IN CENTRAL JAVA, INDONESIA, BASED ON SOIL PROPERTIES." JOURNAL OF FORESTRY RESEARCH 4, no. 1 (2007): 9–18. https://doi.org/10.20886/ijfr.2007.4.1.9-18.

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The objective of this study was to determine the most correlated soil and physiographic factor with the site index of teak. Tree height and stand age were recorded from seventy-three plots located in Central Java, Indonesia, to determine site index. Size of each plot was 0.1 ha. Measured site properties measured were percent slope, elevation, slope position, slope length, dominant topographic form, aspect, and thickness of A horizon. Soil samples from A and B horizon were analyzed for soil color, soil texture, available phosphorous, total nitrogen, and organic matter content.  Analysis in
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Shaw, John D., Edmond C. Packee, Sr., and Chien-Lu Ping. "Growth of balsam poplar and black cottonwood in Alaska in relation to landform and soil." Canadian Journal of Forest Research 31, no. 10 (2001): 1793–804. http://dx.doi.org/10.1139/x01-119.

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While constructing site index curves for balsam poplar (Populus balsamifera L.) and western black cottonwood (Populus trichocarpa Torr. & A. Gray) for interior and southcentral Alaska, we found variations in growth patterns that appeared to be related to landform and soil properties. We characterized soils for 42 of 65 site index plots in an attempt to explain site productivity variation. We found significant negative correlations between site index and elevation. Region, landform, and floodplain characteristics (especially sediment deposition) significantly affected poplar growth rate and
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Wang, G. Geoff. "White spruce site index in relation to soil, understory vegetation, and foliar nutrients." Canadian Journal of Forest Research 25, no. 1 (1995): 29–38. http://dx.doi.org/10.1139/x95-004.

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The relationships between site index and measures of soil, understory vegetation, and foliar nutrients were examined using data from 102 white spruce (Piceaglauca (Moench) Voss) stands in the Sub-boreal Spruce zone of British Columbia. Compared with soil physical properties (adjusted.R2 = 0.54), soil nutrient properties (adjusted.R2 = 0.29) were poor predictors of white spruce site index. The best soil model, using depth of major rooting zone, total nitrogen, and slope as predictors, explained 60% of the total variance in site index. The best understory vegetation model, using frequencies of s
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Dissertations / Theses on the topic "Soil Site Index"

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Klinka, Karel, R. E. (Reid E. ). Carter, and Christine Chourmouzis. "Relationships between coastal Douglas-fir site index and synoptic categorical measures of site quality." Forest Sciences Department, University of British Columbia, 2001. http://hdl.handle.net/2429/682.

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Knowledge of ecological characteristics of trees, sites and tree growth on different sites is fundamental for silvicultural decision-making and planning. With the biogeoclimatic ecosystem classification in place, silvicultural management in British Columbia has been given an ecological foundation; however, relationships between growth and site have not yet been fully investigated. The purpose of this study was to determine how height growth of Douglas-fir within the drier portion of the CWH zone varies with site. We adopted site index (m @ 50 yr bh) as a species-specific measure of forest p
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Burger, Mark Allen. "A wetland trafficability hazard index based on soil physical properties and site hydrology evaluations." Thesis, Virginia Tech, 1994. http://hdl.handle.net/10919/42629.

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Harvesting of forested wetlands in the Atlantic and Gulf lower coastal plains has the potential to cause intense site disturbance. Often, as a result of poor pre-harvest planning, silvicultural activities are performed on wetland soils highly susceptible to rutting and puddling. Potential decreases in pine productivity have been connected with increased soil strength and decreased aeration that are commonly remnants of site disturbances associated with wet-weather harvesting. A simple and economical rating system is needed to identify soils susceptible to disturbance by various types of equipm
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Klinka, Karel, Gordon J. Kayahara, and Christine Chourmouzis. "Relationship of site index to estimates of soil moisture and nutrients for western redcedar in south coastal British Columbia." Forest Sciences Department, University of British Columbia, 1997. http://hdl.handle.net/2429/765.

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Where timber production is the primary management objective, knowledge of the relationship between the potential productivity of candidate tree species and levels of light, heat, nutrient, moisture and aeration is necessary for species- and site-specific decision making. For example, foresters need to decide which tree species to regenerate on a particular harvested area to obtain maximum sustainable productivity. Similarily, when considering the application of silvicultural treatments such as spacing or fertilizing, foresters need to determine whether the potential productivity of a particul
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Klinka, Karel, Pal Varga, and Christine Chourmouzis. "Quantitative characterization of field-estimated soil nutrient regimes in the coastal forest." Forest Sciences Department, University of British Columbia, 1999. http://hdl.handle.net/2429/702.

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One of the key factors in the site classification of the biogeoclimatic ecosystem classification is soil nutrient regime. Soil nutrient regime (SNR) represents the amount of essential soil nutrients available to plants over a period of several years. SNRs classes are assessed based on field identifiable (qualitative) criteria, not using quantitative measures. There have been several studies that attempted to quantitatively characterize regional soil nutrient gradients in the Coastal Western Hemlock (CWH) zone. In the study summarized here, the soils are influenced by a perhumid cool mesotherma
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Klinka, Karel, Bernhard E. Splechtna, and Christine Chourmouzis. "Quantitative characterization of field-estimated soil nutrient regimes in the subalpine coastal forest." Forest Sciences Department, University of British Columbia, 1999. http://hdl.handle.net/2429/759.

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Site classification in the biogeoclimatic ecosystem classification system is based on three differentiating properties: climatic regimes (expressed by biogeoclimatic subzones or variants), soil moisture regimes (SMRs), and soil nutrient regimes (SNRs). A SNR represents a segment of a regional soil nutrient gradient, i.e., soils which provide similar levels of plant-available nutrients over a long period. SNRs are identified in the field using a number of easily observable soil morphological properties and indicator plant species. However, we need to know to what extent soil nutrient propertie
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Klinka, Karel, Han Y. H. Chen, and Christine Chourmouzis. "Quantitative characterization of field-estimated soil nutrient regimes in the subalpine interior forest." Forest Sciences Department, University of British Columbia, 1999. http://hdl.handle.net/2429/716.

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Site classification of the biogeoclimatic ecosystem classification system is based on climatic regime (expressed by biogeoclimatic subzone), soil moisture regime (SMR), and soil nutrient regime (SNR). A SNR represents a segment of a regional soil nutrient gradient, i.e., a population of soils which provide similar levels of plant-available nutrients over a long period. SNR is identified in the field using a number of easily observable soil morphological properties and indicator plant species. However, we do not know the extent to which soil nutrient properties are supported by these indirect
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Klinka, Karel, R. E. (Reid E. ). Carter, Qingli Wang, and M. C. (Michael Charles) Feller. "Influence of salal on height growth of coastal douglas-fir." Forest Sciences Department, University of British Columbia, 2001. http://hdl.handle.net/2429/677.

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The influence of salal on tree growth has attained considerable attention in coastal British Columbia. Field observations, surveys, and studies in the CWH zone have indicated poor growth performance of crop tree species in salal-dominated plantations and natural immature and old-growth stands. Where sites have been burned and planted, tree growth has improved; similar effects have been observed for naturally regenerated stands. Immature stands that developed after wind disturbance or harvesting feature rapid growth and nearly complete absence of salal. As studies have shown that ericaceous pla
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Danielsson, Joakim, and Björkman Emilie. "Kan digitala hjälpmedel användas förmer ståndortsanpassade föryngringar?" Thesis, Linnéuniversitetet, Institutionen för skog och träteknik (SOT), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-85578.

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The aim of this study was to investigate if SI from HPR-data from harvesters and soil moisture classes from digital depth to water maps could be used to support site adaption of regenerations within stands. The study was made on pine and spruce stands in central Sweden. The number of plants/ha, plant height, growth and damage were measured at plot level and for these plots also soil moisture classes and SI were derived from digital maps and HPR. The study shows a potential using SI from HPR and depth to water maps for site adaption of regenerations and to vary tree species within stands. Varia
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Mannschatz, Theresa. "Site evaluation approach for reforestations based on SVAT water balance modeling considering data scarcity and uncertainty analysis of model input parameters from geophysical data." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-175309.

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Extensive deforestations, particularly in the (sub)tropics, have led to intense soil degradation and erosion with concomitant reduction in soil fertility. Reforestations or plantations on those degraded sites may provide effective measures to mitigate further soil degradation and erosion, and can lead to improved soil quality. However, a change in land use from, e.g., grassland to forest may have a crucial impact on water balance. This may affect water availability even under humid tropical climate conditions where water is normally not a limiting factor. In this context, it should also be con
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Klinka, Karel, David Morley New, and Christine Chourmouzis. "Western larch site index in relation to ecological measures of site quality." Forest Sciences Department, University of British Columbia, 2000. http://hdl.handle.net/2429/701.

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A silviculturist needs to know how productivity of all tree species under management varies with the ecological determinants of site quality, i.e., the environmental factors that directly affect the growth of plants - light, heat, soil moisture, soil nutrients, and soil aeration. A good understanding of this variation is necessary for making biologically viable, speciesand site specific silvicultural decisions. Productivity of a given species is usually measured by site index (top tree height at 50 years at breast height age). Quantified relationships between site index of a given species and
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Books on the topic "Soil Site Index"

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Payandeh, Bijan. Predictability of site index from soil factors and lesser vegetation in northern Ontario forest types. Great Lakes Forestry Centre, 1986.

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Pierpoint, Geoffrey. A minimum standard for describing forest sites with a soil pit. Ontario Ministry of Natural Resources, 1988.

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United States. Environmental Protection Agency. Region IX. McKinnon Street Superfund removal site, San Francisco, California: Administrative record and index. The Agency, 1987.

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Solutions, Inc Weston. Kiley Barrel Allen Street site: (Identification code-01KB) : removal action administrative record file and index. Weston Solutions, 2013.

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Harrington, Constance A. PPSITE, a new method of site evaluation for Longleaf pine: Model development and user's guide. U.S. Dept. of Agriculture, Forest Service, Southern Forest Experiment Station, 1990.

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Harrington, Constance A. PPSITE, a new method of site evaluation for Longleaf pine: Model development and user's guide. U.S. Dept. of Agriculture, Forest Service, Southern Forest Experiment Station, 1990.

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Properties, classification, and upland oak site quality for residual soils derived from shales, phyllites, siltstones, and sandstones in southwestern Virginia. Virginia Agricultural Experiment Station, 1986.

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Bartkowicz, Leszek. Tekstura drzewostanów naturalnych w polskich parkach narodowych na tle teorii dynamiki lasu. Publishing House of the University of Agriculture in Krakow, 2021. http://dx.doi.org/10.15576/978-83-66602-20-5.

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The aim of the study was to compare a patch-mosaic pattern in the old-growth forest stands developed in various climate and soil conditions occurring in different regions of Poland. Based on the assumption, that the patch-mosaic pattern in the forest reflect the dynamic processes taking place in it, and that each type of forest ecosystem is characterized by a specific regime of natural disturbances, the following hypotheses were formulated: (i) the patches with a complex structure in stands composed of latesuccessional, shade-tolerant tree species are more common than those composed of early-s
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Book chapters on the topic "Soil Site Index"

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Polat, A. Aytekin, and A. Sarkhosh. "Environmental requirements and site selection." In The fig: botany, production and uses. CABI, 2022. http://dx.doi.org/10.1079/9781789242881.0007.

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Abstract This paper explores the environmental requirements and site selection of Ficus carica. The ideal conditions for dried fig production are: temperate and rainy winters, 30-40°C summer temperatures especially in July-September, 45-50% relative humidity, alluvial, clayish-loam soil, and average annual precipitation of around 650 mm. Growing fig trees in intensive production systems under hydroponic and greenhouse conditions is an excellent alternative production system since it allows increasing leaf area index, harvest index and fruit yield in relation to the total biomass of the plant.
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Hollingsworth, I. D., R. Boardman, and R. W. Fitzpatrick. "A Soil-Site Evaluation Index of Productivity in Intensively Managed Pinus Radiata (D. Don) Plantations in South Australia." In Global to Local: Ecological Land Classification. Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1653-1_37.

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Tiwari, Binod, and Beena Ajmera. "Advancements in Shear Strength Interpretation, Testing, and Use for Landslide Analysis." In Progress in Landslide Research and Technology. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-44296-4_1.

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AbstractLandslides are devastating natural disasters that result in loss of life, property damage, and community disruption. They have global impacts, causing fatalities and economic losses, particularly in mountainous regions near densely populated areas. Landslides can be caused by natural factors, including water saturation from heavy rainfall, snowmelt, and changes in groundwater levels, as well as seismic activity such as earthquakes and volcanic eruptions. Human activities, such as altering drainage patterns, destabilizing slopes, and removing vegetation, also contribute to landslides. C
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Cernusak, Lucas A., and Nerea Ubierna. "Carbon Isotope Effects in Relation to CO2 Assimilation by Tree Canopies." In Stable Isotopes in Tree Rings. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-92698-4_9.

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AbstractThe carbon atoms deposited in tree rings originate from the CO2 in the atmosphere to which the tree’s canopy is exposed. Thus, the first control on the stable carbon-isotope composition of tree rings is by δ13C of atmospheric CO2. There has been an inter-annual trend of decreasing δ13C of atmospheric CO2 over the past two centuries as a result of combustion of fossil fuels and land-use change. Atmospheric CO2 is, for the most part, well mixed, but the sub-canopy air space can become depleted in 13C due to inputs from soil and plant respiration when turbulent exchange with the troposphe
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White, Robert E. "Site Selection and Soil Preparation." In Soils for Fine Wines. Oxford University Press, 2003. http://dx.doi.org/10.1093/oso/9780195141023.003.0010.

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At the Pine Ridge winery in Napa Valley, California, a sign lists six essential steps in wine production. The first step reads . . . Determine the site—prepare the land, terrace the slopes for erosion control, provide drainage and manage soil biodiversity. . . . Determining the site means gathering comprehensive data on the local cli­mate, topography, and geology, as well as the main soil types and their distribu­tion. Traditionally, site determination was done using the knowledge and experi­ence of individuals. Now it is possible to combine an expert’s knowledge with digital data on climate,
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Duan, Qingsong, Huan Zhou, and Jihui Ding. "Correlation Analysis Between Compressibility Index and Physical Property Index of Cohesive Soil in Guinea Coastal Site." In Advances in Transdisciplinary Engineering. IOS Press, 2024. https://doi.org/10.3233/atde241079.

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With the continuous development of infrastructure construction in Guinea by China, research on the geotechnical properties of Guinea has become increasingly important. The clay layer of a coastal site in Guinea is mainly within a range of 25 m, ranging from very soft clay to stiff clay. The variation range of moisture content, density, porosity, liquid limit, and plasticity index is large. By conducting statistical and regression analysis on the main physical indicators and compression index of the cohesive soil in the site, the correlation and related fitting expressions of the main physical
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"Methods of Rating Heavy Metal Pollution in Soils Using Indices." In Global Industrial Impacts of Heavy Metal Pollution in Sub-Saharan Africa. IGI Global, 2023. http://dx.doi.org/10.4018/978-1-6684-7116-6.ch005.

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Heavy metal contamination in soils is from both lithologic and anthropogenic origin. Assessment of such contaminants in soils is done using empirical geochemical studies that involve soil sampling and their subsequent analysis using different laboratory techniques and equipment. Contamination degree rating is done thereafter using pollution indices. In this chapter, single and total complex pollution indices are studied and their purpose, strengths, and weaknesses discussed. Findings showed that pollution rating is purpose-driven and site specific. Important considerations to make when choosin
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Robertson, G. Philip, David Wedin, Peter M. Groffman, et al. "Soil Carbon and Nitrogen Availability Nitrogen Mineralization, Nitrification, and Soil Respiration Potentials." In Standard Soil Methods for Long-Term Ecological Research. Oxford University PressNew York, NY, 1999. http://dx.doi.org/10.1093/oso/9780195120837.003.0013.

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Abstract soil’s capacity to transform organic nitrogen in soil organic matter to inorganic nitrogen-its nitrogen mineralization potential-is often used as an index of the nitrogen available to plants in terrestrial ecosystems. It is perhaps the most common and best means available to assess nitrogen fertility (e.g., Keeney 1980; Binkley and Hart 1989; Palm et al. 1993), related as it is to both the size of the labile soil organic matter (SOM) pool and the activity of the organisms responsible for its oxidation. Mineralization potentials (the net production of inorganic nitrogen under standard
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Lopes Laranjo M., Matos Fernandes M., and Almeida e Sousa J. "Some basic trends on the geotechnical characteristics of Lisbon Miocene clays." In Proceedings of the 15th European Conference on Soil Mechanics and Geotechnical Engineering. IOS Press, 2011. https://doi.org/10.3233/978-1-60750-801-4-351.

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This paper presents a collection of data obtained at different locations concerning Miocene clays, which form a significant part of Lisbon subsoil. The data includes both laboratory and in situ tests, namely: mineralogical characterization; determination of index properties; grain size distribution; natural water content and Atterberg limits; uniaxial compression tests; triaxial compression tests; SPT and cross-hole seismic tests. The characterization of a particular site concerning Miocene clays and including both laboratory and in situ tests is presented. The amount of information is very si
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Guimond-Barrett Antoine, Szymkiewicz Fabien, Le Kouby Alain, Pantet Anne, Reiffsteck Philippe, and Mosser Jean-François. "Resonance Testing of in Situ Deep Mixed Soils." In Advances in Soil Mechanics and Geotechnical Engineering. IOS Press, 2013. https://doi.org/10.3233/978-1-61499-297-4-102.

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This paper focuses on the use of free-free resonance testing (FFR testing) applied to the characterization of stabilized silt and sand specimens treated in situ by deep soil mixing. The aim of FFR testing is to measure the natural frequencies of free vibration of the tested specimen. Compression and shear wave velocities, seismic moduli and Poisson's ratio can be determined from these frequencies. Block samples were taken from soil-cement columns installed at a test site near Paris, France. Specimens were cored from these blocks and submitted to FFR testing in the laboratory. It was found that
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Conference papers on the topic "Soil Site Index"

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Skliar, Viktoriia, Nataliia Yaroshenko, Maryna Sherstiuk, and Yurii Skliar. "SIZE AND VITALITY CHARACTERISTICS OF STELLARIA HOLOSTEA L. PLANTS AND POPULATIONS IN DESNIANSKO-STAROHUTSKYI NATIONAL NATURE PARK." In 24th SGEM International Multidisciplinary Scientific GeoConference 2024. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024v/3.2/s13.38.

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The study of coenotic species in forest herb layers enables detection of ecosystem-level changes, with research in protected areas providing a foundation for long-term monitoring. This study assessed Stellaria holostea L. populations in forest phytocoenoses of Desniansko-Starohutskyi National Nature Park, typical of the Sumy Polissia region. Populations were surveyed in various forest types: Pinetum (sylvestris) convallarioso (majalis) � hylocomiosum, Pinetum (sylvestris) vaccinioso (myrtilli) � moliniosum (caeruleae), Pinetum (sylvestris) vaccinioso (myrtilli) � sphagnosum, Betuletum (pendula
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Kolencik, Marek, David Ernst, Martin Sebesta, Viktor Straka, and Luba Durisova. "IMPACT OF COLLOIDAL PROPERTIES OF PHOSPHORUS-BASED NANOFERTILIZERS IN FOLIAR APPLICATION ON PRODUCTION PARAMETERS, PHYSIOLOGY, AND MINERAL NUTRIENT CONTENT OF SUNFLOWER." In SGEM International Multidisciplinary Scientific GeoConference 24. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/6.1/s24.16.

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In contemporary agricultural practice, ensuring sufficient bioavailable macronutrients, particularly phosphorus, for plants in phosphorus-deficient soils remains a significant challenge. As a promising alternative, the application of phosphate-calcium-based nanofertilizers (NFs), with or without zinc, emerges as a suitable solution, offering targeted effects through foliar dispersion. However, current knowledge gaps persist regarding the development and colloidal properties of applied NFs and their impact on sunflower (Helianthus annuus L.), a globally significant oilseed crop known for its br
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Bilici, C., P. Carotenuto, T. Lunne, et al. "Offshore Geotechnical Site Characterization of Silty Soils: a Novel Database." In Innovative Geotechnologies for Energy Transition. Society for Underwater Technology, 2023. http://dx.doi.org/10.3723/xegy3943.

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Current practice in the offshore wind industry is to utilise existing CPTU soil behavior charts to identify soil type (e.g., clean sands to silty sands, sand mixtures, clay etc.). The charts identify drained clean sands and undrained clays; however there are limitations detecting silty soils. Accordingly, indication of soil behaviour is needed to define whether the engineering correlations for drained or undrained soils should be used for partial drained silty soils. This paper presents a high-quality database of CPTU and laboratory index data collected as part of a Joint Industry Project on c
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Shi, Jian, and Domniki Asimaki. "On the Applicability of Shear Strain Index as a Proxy for Site Response Nonlinearity." In Geotechnical Earthquake Engineering and Soil Dynamics V. American Society of Civil Engineers, 2018. http://dx.doi.org/10.1061/9780784481462.053.

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Zhukov, Sergey, Vladimir Makarov, Vladimir Belyakov, and Alexander Belyaev. "Investigation of the Relationship between the Cone Index and the Physical and Mechanical Parameters of the Soil of Typical Surfaces of the Movement of Agricultural Tractors and Machines." In 11th Asia-Pacific Regional Conference of the ISTVS. International Society for Terrain-Vehicle Systems, 2022. http://dx.doi.org/10.56884/vnzq2520.

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The development of high-performance mobile transport complexes for agricultural purposes is largely based on the results of scientific research. The main direction is to study the mobility properties of robotic complexes in specific natural and climatic conditions of the area. The purpose of this work is to determine the cone index CI for typical surfaces of agricultural machinery movement, based on the physical and mechanical characteristics of agricultural soils. In 2020 year, a large-scale experimental and theoretical study of agricultural soils was conducted for 7 months using a soil penet
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DeGroot, Don J., ZJ Westgate, and T. I. Yetginer-Tjelta. "Geological and Geotechnical Challenges of the East Coast United States for Offshore Energy Transition." In Innovative Geotechnologies for Energy Transition. Society for Underwater Technology, 2023. http://dx.doi.org/10.3723/cbkb5668.

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Offshore wind integrated site characterisation work being conducted at US East Coast lease areas relies on experiences gained in the European market although several unique challenges are emerging. Significant layering and spatial variability of soil units, boulders to the north, and calcareous soils to the south, and sediment mobility and scour each present challenges to ground model development. Furthermore, one of the more pressing challenges in the region is glauconite. This iron potassium mica characterises as a sand but transforms into a fine-grained soil upon shearing due to particle cr
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Long, Xiaoyan, Jack Fraser, Sudarshan Adhikari, Deanne Hargrave, Proserpine Peralta, and Craig Scherschel. "Geotechnical Characterization of the US Atlantic Outer Continental Shelf Fine-Grained Cohesive Sediments." In Offshore Technology Conference. OTC, 2023. http://dx.doi.org/10.4043/32197-ms.

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Abstract An offshore geotechnical site investigation campaign was completed for a large wind farm development project along the US Atlantic Outer Continental Shelf (OCS) offshore New Jersey, a frontier location with few published data on soil characterization. Field exploration and a comprehensive onshore geotechnical laboratory testing program have been performed to understand the site-specific soil behavior. This paper describes the geotechnical properties of the fine-grained cohesive sediments encountered at the study site interpreted based on a consistent framework leveraging the sitewide
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Long, Xiaoyan, Sudarshan Adhikari, Jack Dow, and Deanne Hargrave. "Static and Dynamic Properties of US Atlantic Outer Continental Shelf Cohesionless Soils for Offshore Wind Farm Design." In Offshore Technology Conference. OTC, 2024. http://dx.doi.org/10.4043/35494-ms.

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Abstract Soil behavior assessment is an essential part for the design of offshore wind farm foundations, especially for those situated nearshore with layered soil profiles. This paper presents the key results and study findings of an offshore geotechnical site investigation campaign conducted for a large wind farm development project along the US Atlantic Outer Continental Shelf (OCS) offshore New Jersey, specifically focusing on the cohesionless soils encountered at the study site. As indicated by Andersen, et al., (2023), the static, cyclic, and dynamic soil parameters for offshore wind turb
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Diao, Jincheng, Jingwei Gao, Xiaobo Song, and Baojun Di. "A Method for Fast Obtaining of Soil Shear Strength Index Based on Dem Free-Fall Cone Penetration Simulation." In 11th Asia-Pacific Regional Conference of the ISTVS. International Society for Terrain-Vehicle Systems, 2022. http://dx.doi.org/10.56884/pfqd4535.

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Soil shear strength is an important index of soil mechanical properties, which is of great significance in fields such as rock and soil stress analysis, agricultural machinery farming, seabed exploration, and vehicle trafficability evaluation. In order to improve the problems existing in the existing methods of obtaining soil shear strength index, such as low accuracy, demanding experimental site conditions and long periodicity, this paper constructed a model of free-fall cone penetration into the soil based on the discrete element method (DEM) simulation, and the corresponding relationship be
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Al-Obaidi, Ahmed, Mahmoud Mahmoud, Rizgar Hummadi, and Dunya Thieban. "Engineering Properties of Soil Immersed in Heavy Fuel Oil Waste." In INTERNATIONAL CONFERENCE ON ARCHITECTURAL AND CIVIL ENGINEERING 2020. Cihan University-Erbil, 2021. http://dx.doi.org/10.24086/aces2020/paper.289.

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The power production industries often use gas turbines running on diesel oil, crude oil, or heavy fuel oil (HFO); the use of HFO in the gas power plants needs a sequence of treating processes in a particular treating unit. The HFO processes for treating produce large quantities of the wastewater due to the different treatment stages that, in most, are physical, and the resulted wastewater is called the HFO Waste. The common disposal method that majorly used in getting rid of the HFO waste is the ground pits or pools (directly on the natural soil surface) that work as large reservoirs to keep t
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Reports on the topic "Soil Site Index"

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Shivakumar, Pranavkumar, Kanika Gupta, Antonio Bobet, Boonam Shin, and Peter J. Becker. Estimating Strength from Stiffness for Chemically Treated Soils. Purdue University, 2022. http://dx.doi.org/10.5703/1288284317383.

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The central theme of this study is to identify strength-stiffness correlations for chemically treated subgrade soils in Indiana. This was done by conducting Unconfined Compression (UC) Tests and Resilient Modulus Tests for soils collected at three different sites—US-31, SR-37, and I-65. At each site, soil samples were obtained from 11 locations at 30 ft spacing. The soils were treated in the laboratory with cement, using the same proportions used for construction, and cured for 7 and 28 days before testing. Results from the UC tests were compared with the resilient modulus results that were av
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Pradhan, Nawa Raj. Estimating growing-season root zone soil moisture from vegetation index-based evapotranspiration fraction and soil properties in the Northwest Mountain region, USA. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/42128.

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A soil moisture retrieval method is proposed, in the absence of ground-based auxiliary measurements, by deriving the soil moisture content relationship from the satellite vegetation index-based evapotranspiration fraction and soil moisture physical properties of a soil type. A temperature–vegetation dryness index threshold value is also proposed to identify water bodies and underlying saturated areas. Verification of the retrieved growing season soil moisture was performed by comparative analysis of soil moisture obtained by observed conventional in situ point measurements at the 239-km2 Reyno
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Stuedlein, Armin, Ali Dadashiserej, and Amalesh Jana. Models for the Cyclic Resistance of Silts and Evaluation of Cyclic Failure during Subduction Zone Earthquakes. Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, 2023. http://dx.doi.org/10.55461/zkvv5271.

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This report describes several advances in the cyclic failure assessment of silt soils with immediate and practical benefit to the geotechnical earthquake engineering profession. First, a database of cyclic loading test data is assembled, evaluated, and used to assess trends in the curvature of the CRR-N (cyclic resistance ratio - the number of equivalent cycles) relationship. This effort culminated in a plasticity index-dependent function which can be used to estimate the exponent b in the power law describing cyclic resistance, and may be used to estimate the cyclic resistance of silt soils a
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Leis, Sherry, and Lloyd Morrison. Plant community trends at Tallgrass Prairie National Preserve: 1998–2018. National Park Service, 2022. http://dx.doi.org/10.36967/2294512.

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The Heartland Inventory and Monitoring Network monitors plant communities at Tallgrass Prairie National Preserve and evaluates a variety of environmental variables that affect vegetation patterns, including climate and ecological disturbances such as fire and grazing. Here we report on 2002–2018 trends in management actions (fire and grazing) and key plant community indicators. Temperature has increased over the past 50 years in the region. Precipitation and a standardized precipitation-evapotranspiration index included a high degree of interannual variability and did not demonstrate directional
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Schofield, Ian S., Paul L. Brown, Mark J. Logsdon, and Matthew P. Wickham. Waste Rock Dump Characterization Studies at the Bingham Canyon Mine. Utah Geological Survey, 2024. http://dx.doi.org/10.34191/mp-179.

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The Bingham Canyon Mine, located near Salt Lake City, Utah, is surrounded by more than 6 billion tons of waste rock developed over the open cut mining history from 1903 to present; the surface area of the waste rock is approximately 5000 acres. Waste rock dumps have a thickness of more than 1 200 feet from crest to toe. From 1930 to 2000, selected portions of the waste rock dumps were commercially leached using a ferric-sulfate-based lixiviant to extract copper, whereas other portions have only received meteoric leaching. From 2011 to present, Rio Tinto Kennecott has studied the evolution and
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Snyder, Victor A., Dani Or, Amos Hadas, and S. Assouline. Characterization of Post-Tillage Soil Fragmentation and Rejoining Affecting Soil Pore Space Evolution and Transport Properties. United States Department of Agriculture, 2002. http://dx.doi.org/10.32747/2002.7580670.bard.

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Tillage modifies soil structure, altering conditions for plant growth and transport processes through the soil. However, the resulting loose structure is unstable and susceptible to collapse due to aggregate fragmentation during wetting and drying cycles, and coalescense of moist aggregates by internal capillary forces and external compactive stresses. Presently, limited understanding of these complex processes often leads to consideration of the soil plow layer as a static porous medium. With the purpose of filling some of this knowledge gap, the objectives of this Project were to: 1) Identif
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Steudlein, Armin, Besrat Alemu, T. Matthew Evans, et al. PEER Workshop on Liquefaction Susceptibility. Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, 2023. http://dx.doi.org/10.55461/bpsk6314.

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Seismic ground failure potential from liquefaction is generally undertaken in three steps. First, a susceptibility evaluation determines if the soil in a particular layer is in a condition where liquefaction triggering could potentially occur. This is followed by a triggering evaluation to estimate the likelihood of triggering given anticipated seismic demands, environmental conditions pertaining to the soil layer (e.g., its depth relative to the ground water table), and the soil state. For soils where triggering can be anticipated, the final step involves assessments of the potential for grou
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Spence, John, Ken Hyde, and Vanessa Glynn-Linaris. 1995–2017 analysis of vegetation change using NDVI data at Glen Canyon National Recreation Area: Focused condition assessment report. National Park Service, 2023. http://dx.doi.org/10.36967/2299497.

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This Focused Condition Assessment examines the impacts of the recent 2000–2020 long-term drought on the vegetation and soils of Glen Canyon National Recreation Area (GLCA). With support from the NASA DEVELOP Program, summer (June–August) Normalized Difference Vegetation Index (NDVI) values from 1995 to 2017 (excluding 2012 which was not available), measuring greenness and phenology in the vegetation, were analyzed for two periods. The first period from 1995–1999 included the pre-drought period, when precipitation was average to above average. Most years of the second period, 2000–2020, were dr
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Thomashow, Linda, Leonid Chernin, Ilan Chet, David M. Weller, and Dmitri Mavrodi. Genetically Engineered Microbial Agents for Biocontrol of Plant Fungal Diseases. United States Department of Agriculture, 2005. http://dx.doi.org/10.32747/2005.7696521.bard.

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The objectives of the project were: a) to construct the site-specific integrative expression cassettes carrying: (i) the chiA gene for a 58-kDa endochitinase, (ii) the pyrrolnitrin biosynthesis operon, and (iii) the acdS gene encoding ACC deaminase; b) to employ these constructs to engineer stable recombinant strains with an expanded repertoire of beneficial activities; c) to evaluate the rhizosphere competence and antifungal activity of the WT and modified strains against pathogenic fungi under laboratory and greenhouse conditions; and d) to monitor the persistence and impact of the introduce
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Kulinna, Matthias. Ethnomarketing in Deutschland : die Konstruktion von Ethnizität durch Marketingakteure. Goethe-Universität, Institut für Humangeographie, 2007. http://dx.doi.org/10.21248/gups.1093.

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Die vorliegende Arbeit verdeutlicht für das Handlungsfeld „Ethnomarketing in Deutschland“, wie ethnische Grenzen gezogen werden. Sein Ausgangspunkt ist der gesellschaftliche Diskurs über das Deutschsein und seine Gegenstücke: das Türkische, Russische, Orientalische, Südländische usw.. Im Niemandsland zwischen Fremdem und Eigenem führen die Akteure des Ethnomarketings ihr eigenes Spiel mit der Ethnizität auf, indem sie sich die kursierenden ethnischen Zuschreibungen zu nutze machen. Sie übernehmen selektiv die im Diskurs vorgefundenen ethnischen Konstruktionen eines „kollektiven Gedächtnisses“
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