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Showing result 1 - 5 of 6 essays matching the above criteria.

  1. 1. Quantifying changes in soil bioporosity in subarctic soils after earthworm invasions

    University essay from

    Author : Joel Fransson Forsberg; [2021]
    Keywords : Biopores; macropores; geoengineering earthworms; X-ray tomography;

    Abstract : Pores provide important hotspots for chemical and biological processes in soils. Earthworm burrows affect the macropore structure and their actions may create new preferential pathways for water and gas flow within soils. This, in turn, indirectly affect plants, nutrient cycling, hydraulic conductivity, gas exchange, and soil organisms. READ MORE

  3. 2. Pharmaceuticals leaching from biosolids amended soils

    University essay from SLU/Dept. of Aquatic Sciences and Assessment

    Author : Anastasia von Hellens; [2015]
    Keywords : biosolids; pharmaceuticals; leaching; soil texture; correlation analysis; physiochemical properties;

    Abstract : Biosolids are currently applied on arable land in order to recirculate nutrients from urban areas. Biosolids have been reported to contain organic con-taminants such as pharmaceuticals; thereby the impact of spreading of bio-solids on the environment has to be investigated. READ MORE

  4. 3. 3D-printing of undisturbed soil imaged by X-ray

    University essay from SLU/Dept. of Soil and Environment

    Author : Matthias Bacher; [2013]
    Keywords : soil; macropores; 3D-printing; X-ray;

    Abstract : An artificial soil pore network can help to analyse preferential macropore flow which is important for pollutant leaching and degradation in the environment. Reproducing soil macro pores in an artificial, durable material offers the opportunity of repeating experiments in contrast to real soil pore networks. READ MORE

  5. 4. Effects of simulated rainfall intensity on water flow through soil in two tillage systems

    University essay from SLU/Dept. of Soil and Environment

    Author : Maria Sandin; [2012]
    Keywords : heavy clay soils; reduced tillage; macropore flow; rainfall simulator; dual-permeability model;

    Abstract : Diffuse losses of phosphorus from agricultural land to freshwater reservoirs have gained increasing interest in later years. Resent research suggests that phosphorus is mainly transported from the fields through macropores, and that soil under reduced forms of tillage can develop a higher macroporosity and thus an increased risk of phosphorus leaching compared to conventionally tilled soil, because of the more rapid flows of water through the soil. READ MORE

  6. 5. The influence of land-use change, root abundance and macropores on saturated infiltration rate - a field study on Western Java, Indonesia

    University essay from Lunds universitet/Avdelningen för Teknisk vattenresurslära

    Author : Martin Larsson; Sonja Eliasson; [2006]
    Keywords : Civil engineering; kartografi; marklära; geomorfologi; Fysisk geografi; climatology; land-use change; double ring infiltrometer; saturated infiltration rate; roots; soil properties; blue dye tracer; Indonesia; west Java; Physical geography; geomorphology; cartography; pedology; klimatologi; hydraulic engineering; offshore technology; soil mechanics; Väg- och vattenbyggnadsteknik; Earth and Environmental Sciences; Technology and Engineering;

    Abstract : The aim of this study was to examine the infiltration rate of water and some parameters affecting it. Especially the land usage, the abundance of roots and macropores were investigated. A field study was carried out on western Java in Indonesia, on the slope of Mount Salak. The study compared four different land uses; i. READ MORE