magistrsko delo
Mateja Ribnikar (Author), Mojca Šraj (Mentor), Mario Krzyk (Thesis defence commission member), Urša Vilhar (Co-mentor)

Abstract

Slovenija je dežela, ki v Evropi spada med eno izmed najbolj gozdnatih držav, saj gozd prekriva več kot polovico njenega ozemlja. Gozd vsekakor vpliva na vodne razmere oz. vodno bilanco v svoji okolici. Tudi urbani gozdovi oz. zelena območja v mestih imajo vpliv na vodno bilanco, saj s prestrezanjem padavin zmanjšujejo površinski odtok, poleg tega pa imajo tla na takih območjih večjo infiltracijsko sposobnost v primerjavi z drugimi urbaniziranimi površinami. Gozdni hidrološki krog v osnovi sestavljajo padavine, ki so bodisi prestrežene ali prepuščene, njihova infiltracija, površinski odtok ter evapotranspiracija. Vodno bilanco lahko ocenimo s pomočjo različnih vrst modelov, če imamo na voljo dovolj merjenih podatkov. V magistrski nalogi tako obravnavamo uporabo modela Brook90 za ugotavljanje vodne bilance v urbanih gozdovih. V praktičnem delu naloge smo s pomočjo terenskih meritev izdelali modele vodne bilance za štiri raziskovalne ploskve v urbanem okolju (Gameljne-listavci, Gameljne-bor, Gameljne-otok in Rožnikmešani gozd). Za vsako posamezno raziskovalno območje smo izračunali deleže odtoka, prepuščenih padavin in evapotranspiracije in jih primerjali z merjenimi vrednostmi. Model Brook90 se je izkazal kot primeren model za izračun in modeliranje vodne bilance na izbranih ploskvah. Ujemanje med merjenimi in modeliranimi vrednostmi je dobro. Rezultati so pokazali, da največji delež padlih padavin predstavlja površinski odtok. Kljub temu pa ta delež v zadnjih nekaj letih pada in se posledično povečuje delež evapotranspiracije.

Keywords

gradbeništvo;magistrska dela;II. VOI;vodna bilanca;evapotranspiracija;model Brook90;padavine;gozd;

Data

Language: Slovenian
Year of publishing:
Typology: 2.09 - Master's Thesis
Organization: UL FGG - Faculty of Civil and Geodetic Engineering
Publisher: [M. Ribnikar]
UDC: 556.047:712.41(497.4)(043.3)
COBISS: 8558433 Link will open in a new window
Views: 970
Downloads: 439
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Other data

Secondary language: English
Secondary title: Use of Brook90 model for estimation of water balance in urban forests
Secondary abstract: Slovenia is one of the most forested countries in Europe. More than half of its territory is covered by forest. The forest certainly influences on water balance and hydrologic conditions in the river basin. Urban forests and other green areas in cities have also impact on water balance. In comparison with other urbanized areas, they have a positive effect since they can reduce the surface runoff by rainfall interception and increasing infiltration below the trees. The forest hydrological cycle is in general represented by precipitation (intercepted or direct), its infiltration, surface runoff and evapotranspiration. If we have enough measured data about hydrological processes, we can estimate the forest water balance using different types of models. In master thesis we tested the Brook90 model in order to estimate the water balance in urban forests. In the practical part of the thesis we developed water balance models for four urban research areas (Gameljne-leaflets, Gameljne-pine, Gameljne-island and Rožnik-mixed forest) with the help of field measurements. We estimated the amount of surface runoff, throughfall and evapotranspiration for each considered research area and compared them with measured values. The Brook90 model proved to be a suitable tool for simulating and modeling of the water balance in considered urban research areas. Comparision of measured and modeled values yielded good results. The largest percentage of the water balance presents surface runoff. Nevertheless, its amount in the last few years has been falling and consequently the amount of evapotranspiration has been increasing.
Secondary keywords: civil engineering;master thesis;water balance;evapotranspiration;Brook90 model;precipitation;forest;
Type (COBISS): Master's thesis/paper
Study programme: 0
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Pages: XVIII, 72 str.
ID: 10961440