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Description
  • Energy fluxes, including net radiation, latent heat flux and sensible heat flux were determined on clear days during the vegetative period in four types of land cover: wet meadow, pasture, arable field, and an artificial concrete surface. The average net radiation ranged between 123 W m(-2) at the concrete surface and 164 W m(-2) at the wet meadow. The mean maximum daytime latent heat ranged between 500 and 600 W m(-2), which corresponds to an evapotranspiration rate of about 0.2 g m(-2) s(-1) under the prevailing conditions of the wet meadow. The results demonstrated that the wet meadow dissipated about 30 % more energy through evapotranspiration than the field or the pasture, and up to 70 % more energy than the concrete surface. The evaporative fraction indicated that more than 100 % of the energy released by the wet meadow was dissipated through evapotranspiration; this was attributed to local heat advection. Wetland evapotranspiration thus contributes significantly to the cooling of agricultural landscapes; the energy released can reach several 100 MW km(-2). Wetland evapotranspiration has a double 'air conditioning' effect through which it equalises temperature differences: (1) surplus solar energy is bound into water vapour as latent heat; (2) The vapour moves towards cooler portions of the atmosphere where the energy is released. The air-conditioning effect of wetlands plays an important role in mitigating local climate extremes; this ecosystem service tends to be disregarded in relation to other better-known wetland functions such as nutrient retention and provision of high biodiversity.
  • Energy fluxes, including net radiation, latent heat flux and sensible heat flux were determined on clear days during the vegetative period in four types of land cover: wet meadow, pasture, arable field, and an artificial concrete surface. The average net radiation ranged between 123 W m(-2) at the concrete surface and 164 W m(-2) at the wet meadow. The mean maximum daytime latent heat ranged between 500 and 600 W m(-2), which corresponds to an evapotranspiration rate of about 0.2 g m(-2) s(-1) under the prevailing conditions of the wet meadow. The results demonstrated that the wet meadow dissipated about 30 % more energy through evapotranspiration than the field or the pasture, and up to 70 % more energy than the concrete surface. The evaporative fraction indicated that more than 100 % of the energy released by the wet meadow was dissipated through evapotranspiration; this was attributed to local heat advection. Wetland evapotranspiration thus contributes significantly to the cooling of agricultural landscapes; the energy released can reach several 100 MW km(-2). Wetland evapotranspiration has a double 'air conditioning' effect through which it equalises temperature differences: (1) surplus solar energy is bound into water vapour as latent heat; (2) The vapour moves towards cooler portions of the atmosphere where the energy is released. The air-conditioning effect of wetlands plays an important role in mitigating local climate extremes; this ecosystem service tends to be disregarded in relation to other better-known wetland functions such as nutrient retention and provision of high biodiversity. (en)
Title
  • The importance of wetlands in the energy balance of an agricultural landscape
  • The importance of wetlands in the energy balance of an agricultural landscape (en)
skos:prefLabel
  • The importance of wetlands in the energy balance of an agricultural landscape
  • The importance of wetlands in the energy balance of an agricultural landscape (en)
skos:notation
  • RIV/60076658:12220/14:43887407!RIV15-MSM-12220___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • I, S
http://linked.open...iv/cisloPeriodika
  • 4
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 20944
http://linked.open...ai/riv/idVysledku
  • RIV/60076658:12220/14:43887407
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • Local climate; Heat advection; Evaporative fraction; Evapotranspiration; Bowen ratio; Heat balance (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • NL - Nizozemsko
http://linked.open...ontrolniKodProRIV
  • [FCBB5EAE91E2]
http://linked.open...i/riv/nazevZdroje
  • Wetlands Ecology And Management
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 22
http://linked.open...iv/tvurceVysledku
  • Pokorný, Jan
  • Brom, Jakub
  • Huryna, Hanna
http://linked.open...ain/vavai/riv/wos
  • 000339379400002
issn
  • 0923-4861
number of pages
http://bibframe.org/vocab/doi
  • 10.1007/s11273-013-9334-2
http://localhost/t...ganizacniJednotka
  • 12220
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