diplomska naloga
Katarina Česnik (Author), Simon Rusjan (Mentor), Dušan Žagar (Thesis defence commission member), Matjaž Mikoš (Co-mentor)

Abstract

Diplomska naloga obravnava spremembe masne bilance nitratnega dušika na gozdnatih prispevnih območjih. Le-te nastanejo pod vplivom hidroloških in biogeokemijskih mehanizmov. Območje obravnave, prispevno območje potoka Padež je skoraj v celoti prekrito z gozdom. Med leti 2006 in 2007 so se zvezno spremljale hidrometeorološke razmere in potekale meritve kemizma vode in velikosti pretokov potoka Padež. S pomočjo podatkov o spremembah koncentracij nitratnega dušika v vodotoku in padavinah ter podatkov o letnih količinah padavin na območju porečja in letnih pretokih potoka Padež, smo opredelili masno bilanco nitratnega dušika. Podana je kot razlika med količino vnesenega in izpranega nitratnega dušika na hektar prispevne površine. V spremenljivosti masne bilance so opazni sezonski vplivi. Porečje nekaj časa deluje kot izvor in nekaj časa kot ponor za nitratni dušik, odvisno od hidroloških razmer in količin mobilnega nitratnega dušika v sistemu tal in njegovih koncentracij v padavinah. Nadalje smo poskušali napovedati, kako bodo predvidene spremembe v okolju vplivale na biogeokemijsko kroženje duška in gibanje masne bilance na gozdnatih prispevnih območjih.

Keywords

gradbeništvo;diplomska naloga;UNI;VKI;hidrologija;biogeokemija;masna bilanca;atmosferski vnos;porečje Padež;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FGG - Faculty of Civil and Geodetic Engineering
Publisher: K. Česnik
UDC: 556.5(497.4)(043.2)
COBISS: 6633313 Link will open in a new window
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Downloads: 651
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Other data

Secondary language: English
Secondary title: Nitrate mass balance in the Padež stream watershed
Secondary abstract: Graduation thesis analyzes changes in nitrate mass balance in a forested watersheds. The nitrate mass balance changes occur manly because of hydrological and biogeochemical mechanisms. The studied area, the Padež stream watershed, is mainly covered with forest. Between years 2006 and 2007 the hydrometeorological conditions and streamwater chemistry of Padež stream were continuously monitored. The differences in streamwater nitrate concentrations and nitrate concentrations in precipitations and measurements of precipitations and Padež stream discharge helped us to calculated nitrate mass balance. Mass balance is analysed as a difference between inputs and outputs of nitrate per hectare of catchment area. The seasonal differences in mass balance were observed. Watershed behaves as a sink or as a source of nitrate depending on hydrological conditions and amount of mobile nitrate in soil and its concentrations in precipitations. We also try to describe the impact of global environmental changes on biogeochemical cycling of nitrate and variations in its mass balance in forested catchments.
Secondary keywords: graduation thesis;civil engineering;hydrology;biogeochemistry;mass balance;atmospheric deposition;the Padež stream watershead;
File type: application/pdf
Type (COBISS): Undergraduate thesis
Thesis comment: Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Pages: XXII, 66 str.
ID: 8636202