diplomska naloga
Manca Miko (Author), Matjaž Mikoš (Mentor)

Abstract

Naloga obravnava padavine in njihovo erozivnost, kot pomemben dejavnik erozije prsti. V prvem delu smo naredili splošen pregled vodne erozije in njenih dejavnikov. Poleg tega smo opredelili tudi načine merjenja padavin in prikazali mrežo postaj z ombrografi v Sloveniji. Letna količina padavin ni ustrezen pokazatelj letne erozivnosti padavin R, ki je eden od dejavnikov v enačbi RUSLE. Erozivnost padavin je odvisna od njihove intenzitete. Z analizo in primerjavo padavin na postaji Letališče Portorož s padavinami na lokalnih postajah smo pokazali na pomembnost lokalnih meritev padavin vzporedno z terenskimi raziskavami. Temeljni del naloge je namenjen izračunom in meritvam erozije prsti. S pomočjo programa Rusle 2 smo za različne rabe tal ocenili sproščanje prsti, ter nato na rezultate primerjali s terenskimi meritev v povodju Dragonje. S prilagoditvijo dejavnika obdelave in pokrovnosti tal C smo umerili program za ploskve v gozdu. Za gola tla in travnik v zaraščanju smo program uporabili brez umerjanja. Pri golih tleh ima pomembno vlogo zemljina in vsebnost organskih snovi v tleh. Rusle 2 se je izkazal za uporabnega za povodju Dragonje, vendar bi za dokončno umerjanje modela potrebovali še nekajletne terenske raziskave.

Keywords

gradbeništvo;diplomska dela;UNI;padavine;intenziteta padavin;erozivnost padavin;erozija prsti;erozija tal;terenske meritve;poskusan ploskev;Dragonja;RUSLE;raba tal;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FGG - Faculty of Civil and Geodetic Engineering
Publisher: [M. Miko]
UDC: 551.3.053:556.12:556.52(043.2)
COBISS: 3218273 Link will open in a new window
Views: 1231
Downloads: 383
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Other data

Secondary language: English
Secondary title: Analysis of soil erosion on experimental plots in the Dragonja river basin
Secondary abstract: The paper deals with precipitation and rainfall erosivity, which are among leading factors influencing soil erosion. In the first part, an overview of water erosion and its processes are given. An overview of precipitation measurement methods is given and the network of raingauges in Slovenia is shown. Annual precipitation value does not indicate annual erosivity R, which is one of the factors in RUSLE Equation. Rainfall erosivity depends on precipitation intensity. Analysis and comparison of precipitation on Letališče Portorož station with participation on local raingauges confirmed the importance of local measurements parallel to field measurements. The main part of the paper is given to measurements and equations of soil erosion. With Rusle 2 program soil detachment was computed and compared with observed data on the Dragonja river basin. Rusle 2 was calibrated for plots in wood with adjustment of crop- management factor C. For bare soil and for grassland in process of overgrowing we used the program with no calibration. On bare soil the content of organic matter was very high, because of previous land use – pasture. Rusle 2 is suitable for use in the Dragonja river basin, but first more field measurements should be done.
Secondary keywords: percipitations;rainfall intensity;rinfall erosivity;soil erosion;field measurements;experimental plot;Dragonja;land use;
File type: application/pdf
Type (COBISS): Undergraduate thesis
Thesis comment: Univ. Ljubljana, Fakulteta za gradbeništvo in geodezijo, Univerzitetni študij Vodarstva in komunalnega inženirstva
Pages: XII, 83 str., pril.
ID: 8310986