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Dissipation of solar energy in landscape—controlled by management of water and vegetation

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  • Pokorný, Jan

Abstract

Man (farmers, forest managers) by dealing with water and vegetation changes substantially the distribution of solar energy. Differences in sensible heat (warming) and latent heat (cooling by evapotranspiration) on drained and wetland areas, and the air conditioning effect of a single tree are demonstrated. It is shown that the energy produced in all power stations of the Czech Republic is several orders of magnitude lower than the sensible heat released from the drained and urban areas of the country. A single tree transpiring about 400 l of water a day has an air-conditioning efficiency of about 20 kW. Whereas photosynthesis (biomass production) uses less than 1% of incoming solar energy, by evapotranspiration (latent heat) more than 50% can be used in water saturated vegetation. Distribution of temperatures (heat potentials) in large areas is shown on satellite pictures. Land managers influence local climate and their important role should be considered in policy-making decisions.

Suggested Citation

  • Pokorný, Jan, 2001. "Dissipation of solar energy in landscape—controlled by management of water and vegetation," Renewable Energy, Elsevier, vol. 24(3), pages 641-645.
    • Handle: RePEc:eee:renene:v:24:y:2001:i:3:p:641-645
    DOI: 10.1016/S0960-1481(01)00050-7
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    Cited by:

    1. Jakub BROM & Jan PROCHÁZKA & Alžběta REJŠKOVÁ, 2009. "Evaluation of functional properties of various types of vegetation cover using remotely sensed data analysis," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 4(SpecialIs), pages 49-58.
    2. Grant Revell & Martin Anda, 2014. "Sustainable Urban Biophilia: The Case of Greenskins for Urban Density," Sustainability, MDPI, vol. 6(8), pages 1-16, August.
    3. Miloslav Šír & Ľubomír Lichner & Miroslav Tesař & Miroslav Krejča & Jan Váchal, 2008. "Soil water retention and gross primary productivity in the Zábrod area in the Šumava Mts," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 3(SpecialIs), pages 130-138.

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