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Evaluating the influence of rain event characteristics on rainfall interception by urban trees using multiple correspondence analysis
ID Zabret, Katarina (Author), ID Šraj, Mojca (Author)

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Abstract
Urban trees play an important role in the built environment, reducing the rainfall reaching the ground by rainfall interception. The amount of intercepted rainfall depends on the meteorological and vegetation characteristics. By applying the multiple correspondence analysis (MCA), we analysed the influence of rainfall amount, intensity and duration, the number of raindrops, the mean volume diameter (MVD), wind speed and direction on rainfall interception. The analysis was based on data from 176 events collected over more than three years of observations. Measurements were taken under birch (Betula pendula Roth.) and pine (Pinus nigra Arnold) trees located in an urban park in the city of Ljubljana, Slovenia. The results indicate that rainfall interception is influenced the most by rainfall amount and the number of raindrops. In general, the ratio of rainfall interception to gross rainfall decreases with longer and more intense rainfall events. The influence of the raindrop number depends also on their size (MVD), which is evident especially for the pine tree. For example, pine tree interception increases with smaller raindrops regardless of their number. In addition, MCA gives a new insight into the influence of wind characteristics, which was not visible using previous methods of data analysis (regression analysis, correlation matrices, regression trees, boosted regression trees). According to the nearby buildings, a wind corridor is sometimes created, decreasing rainfall interception by both tree species.

Language:English
Keywords:rainfall interception, throughfall, multiple correspondence analysis (MCA), rainfall event characteristics, urban trees, hydrology
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FGG - Faculty of Civil and Geodetic Engineering
Publication status:Published
Publication version:Version of Record
Year:2019
Number of pages:Str. 1-13
Numbering:Letn. 11, št. 12, 2659
PID:20.500.12556/RUL-133286-16833a63-5770-c2e7-968f-dcd03f9168aa This link opens in a new window
UDC:556.5(497.4)
ISSN on article:2073-4441
DOI:10.3390/w11122659 This link opens in a new window
COBISS.SI-ID:8995681 This link opens in a new window
Publication date in RUL:19.11.2021
Views:943
Downloads:128
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Record is a part of a journal

Title:Water
Shortened title:Water
Publisher:Molecular Diversity Preservation International - MDPI
ISSN:2073-4441
COBISS.SI-ID:36731653 This link opens in a new window

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:17.12.2019

Secondary language

Language:Slovenian
Keywords:prestrezanje padavin, prepuščene padavine, multipla korespondenčna analiza (MCA), lastnosti padavinskega dogodka, urbana drevesa., hidrologija

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