Search for dissertations about: "arid"

Showing result 11 - 15 of 79 swedish dissertations containing the word arid.

  2. 11. More Water, Less Grass? : An assessment of resource degradation and stakeholders’ perceptions of environmental change in Ombuga Grassland, Northern Namibia

    Author : Patrik Klintenberg; Carl Christiansson; Wolter Arnberg; Peter Schlyter; Stein W. Bie; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Environmental monitoring; semi-arid; pastoralism; rural water supply; indicators; local knowledge; vegetation survey; satellite remote sensing; Physical geography; Naturgeografi; geografi med naturgeografisk inriktning; Physical Geography;

    Abstract : The objectives of this thesis are to assess: to what degree have natural resources deteriorated in a grazing area in northern Namibia, how do perceptions of environmental change held by local stakeholders there, correspond to scientific assessments, and how do these relate to national estimates? Analysis of the process of developing national indicators for monitoring of land degradation concluded that specific indicators should be developed on national level, and in some instances even on local level as there are no universal causes of land degradation. According to farmers overgrazing and low rainfall since the early 1990s cause negative environmental changes in the study area, partly confirming findings from national monitoring. READ MORE

  4. 12. Urban Climate and Air Pollution in Ouagadougou, Burkina Faso

    Author : Jenny Lindén; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Sub-Saharan Africa; Sahel; semi arid; nocturnal cooling; urban vegetation; evening evaporative cooling; cooling rate; atmospheric stability; thermal wind; carbon monoxide; particulate matter; road dust; exposure differences;

    Abstract : ABSTRACT Africa has recently been singled out by UN Habitat as the fastest urbanizing continent in the world. The most extreme case was found in the Sahelian city of Ouagadougou, Burkina Faso, where the population is expected to almost double over the next ten years. READ MORE

  5. 13. Urban Design and Outdoor Thermal Comfort in Warm Climates. Studies in Fez and Colombo

    Author : Erik Johansson; Boende och bostadsutveckling; []
    Keywords : HUMANIORA; HUMANITIES; marklära; geomorfologi; Fysisk geografi; climatology; cartography; pedology; geomorphology; Physical geography; Urban planning; Urban design; Urban climate; Tropical areas; Thermal comfort; Sri Lanka; Planning regulations; Morocco; Microclimates; Land-use; Fez; Humid tropics; Colombo; Developing countries; Climatic design; Climate; Arid zones; Built environment; Physical planning; kartografi; klimatologi; Town and country planning; Stads- och glesbygdsplanering; Fysisk planering;

    Abstract : In many developing tropical countries, rapid urban growth leads to several problems, including increased thermal stress. This has negative consequences for people's health and well-being, and affects social and commercial outdoor activities negatively. READ MORE

  6. 14. Basin-scale change in water availability and water quality under intensified irrigated agriculture

    Author : Rebecka Törnqvist; Jerker Jarsjö; Marcel van der Perk; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Irrigation; Hydrology; Land-use change; Basin-scale; Central Asia; Aral Sea; Semi-arid; Return flow; Water saving; Health risk; Water quality; Surface water; Groundwater; Nitrogen; Attenuation; Recirculation; Climate change; Physical Geography; naturgeografi;

    Abstract : Changes in land use and water use can greatly impact the cycling of water and water-borne substances. Increased redistribution of river water to irrigated fields can cause enhanced evapotranspiration and decreased river discharge. READ MORE

  7. 15. Microclimate and Thermal Comfort of Urban Spaces in Hot Dry Damascus- Influence of urban design and planning regulations

    Author : Moohammed Wasim Yahia; Boende och bostadsutveckling; []
    Keywords : HUMANIORA; HUMANITIES; Architecture; Arid zones; Damascus; Hot dry regions; Thermal indices; Urban climate; Built environment; Microclimate; Urban design; Climate; Climatic design; Planning regulations; Thermal comfort; Urban planning;

    Abstract : The aim of this study is to develop better understanding of the relationship between microclimate and urban design in the hot dry city of Damascus. This is done by studying the impact of urban regulations on microclimate in different urban design patterns in modern Damascus. READ MORE