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Urbani izziv Volume 26, No. supplement, November 2015 : S165–S178

(Articles)
doi: 10.5379/urbani-izziv-en-2015-26-supplement-011

 

   Article in PDF format

 

Author

Katarina Zabret

University of Ljubljana, Faculty of Civil and Geodetic Engineering, Department of Environmental Civil Engineering, Slovenia
katarina.zabret@fgg.uni-lj.si

Mojca Šraj

University of Ljubljana, Faculty of Civil and Geodetic Engineering, Department of Environmental Civil Engineering, Slovenia
mojca.sraj@fgg.uni-lj.si

 

Title

Can Urban Trees Reduce the Impact of Climate Change on Storm Runoff?

 

Abstract

The process of urbanisation leads to significant changes in surface cover, which influence the hydrological properties of an area. The infiltration of precipitation into the soil is reduced, so that both surface water runoff and the velocity at which water travels have increased drastically. In recent decades climate change has also been observed to affect precipitation trends. Many studies have shown that the amount of rainfall is increasing and that heavy rainfall events are becoming more frequent. These changes are producing more runoff, which has to be drained. Urban trees can reduce the amount of precipitation reaching the ground due to rainfall interception, and are becoming increasingly recognized as an effective means for the regulation of storm water volumes and costs. The study measured rainfall interception in an urban area. It shows that Betula pendula can intercept 20.6% of annual rainfall, whereas Pinus nigra could intercept as much as 51.0% of annual rainfall. The advantage of rainfall interception was shown in the case of a parking lot where the planting of trees was able to reduce runoff by up to 17%.

 

Key Words

rainfall interception, green infrastructure, climate change, storm water runoff, Betula pendula, Pinus nigra

 

 

 

PUBLISHER

Urbanistični inštitut RS
Urbani izziv - Editorial Board
Trnovski pristan 2, 1000 Ljubljana, SLO

  + 386 (0)1 420 13 10
  urbani.izziv@uirs.si

ISSN

Print edition: 0353-6483
Web edition: 1855-8399
Professional edition: 2232-481X

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1.7
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