Sökning: "blue dye tracer"

Hittade 3 uppsatser innehållade orden blue dye tracer.

  1. 1. Effects of trees and termite nests in agroforestry parklands on preferential water flows : image analysis of soil profiles after rain simulations and dye experiments

    Master-uppsats, SLU/Dept. of Forest Ecology and Management

    Författare :Addisu Almaw Semeneh; [2012]
    Nyckelord :Preferential water flow; macro pores; infiltration capacity; termites; Vittelaria paradoxa; tropics; Burkina Faso; brilliant blue tracer;

    Sammanfattning : Water scarcity is a critical problem in semi-arid tropics of Burkina Faso. Agroforestry parklands, a land use where scattered trees are maintained with annual crops, is commonly practiced by farmers in which termite nests are integral components of the system. LÄS MER

  3. 2. Tracing water movement in the capillary fringe

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Avdelningen för Teknisk vattenresurslära

    Författare :Pontus Pojmark; [2011]
    Nyckelord :Technology and Engineering;

    Sammanfattning : The capillary fringe is a small zone on top of the ground water table where a low capillary tension keeps soil pores with water up to a certain level. Normally, calculations in hydrogeology consider that the capillary fringe only has vertical movement like the unsaturated zone in comparison to the ground water zone, which only has horizontal movement. LÄS MER

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

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Avdelningen för Teknisk vattenresurslära

    Författare :Martin Larsson; Sonja Eliasson; [2006]
    Nyckelord :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;

    Sammanfattning : 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. LÄS MER