Vpliv podnebnih sprememb na organski ogljik v tleh

Marolt, Ana (author), Grčman, Helena (mentor)

Organski ogljik je sestavni del organske snovi v tleh. Vpliva na številne funkcije tal, njegova vsebnost pa je odvisna od dolgoletnega ravnovesja med mineralizacijo in akumulacijo organske snovi. Tla predstavljajo največji zalogovnik ogljika na Zemlji, vendar je njihova sposobnost shranjevanja ogljika odvisna od podnebja. V prihodnosti se nam obetajo demografske in tehnološke spremembe, ki bodo povzročile spremembe emisij toplogrednih plinov, ti pa povišanje temperatur. Za ugotavljanje vpliva podnebnih sprememb na organski ogljik v tleh lahko uporabimo modele. Obstaja več različnih modelov, ki se razlikujejo po vhodnih in izhodnih podatkih ter po primernosti za specifične lokacije. Model RothC velja za razmeroma enostavnega, kar se tiče pridobivanja vhodnih podatkov, najbolj primeren je za travnate površine. Model CarboSOIL je najbolj primeren za modeliranje organskega ogljika na območjih mediteranskega podnebja. Nudi informacijo o spremembi organskega ogljika do globine tal 75 cm, medtem ko model CENTURY, ki je prav tako primeren za mediteransko podnebje, simulira dinamiko ogljika v zgornjih 30 cm tal. Modeli kot vhodne klimatske podatke uporabljajo rezultate modelov splošne cirkulacije, ki temeljijo na emisijskih scenarijih. Namen diplomskega dela je pregled in primerjava omenjenih modelov za simulacijo organskega ogljika in njihovih napovedi.

• Language: Slovenian
• Keywords: organski ogljik, podnebne spremembe, modeliranje, RothC, CarboSOIL, CENTURY
• Work type: Diploma project paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: BF - Biotechnical Faculty
• Publisher: [A. Marolt]
• Year: 2017
• PID: 20.500.12556/RUL-92989
• UDC: 631.417.1:551.583:519.22(043.2)
• COBISS.SI-ID: 8754041
• Publication date in RUL: 12.07.2017

MAROLT, Ana, 2017, Vpliv podnebnih sprememb na organski ogljik v tleh [online]. Bachelor’s thesis. A. Marolt. [Accessed 14 April 2025]. Retrieved from: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=eng&id=92989

Secondary language

• Language: English
• Title: The impact of climate change on soil organic carbon

Abstract

Soil organic carbon is an integral part of organic. It affects many soil functions and its content depends on the balance between carbon dioxide loss from the soil and the accumulation of organic matter. Soils represent the largest carbon storage on Earth, but their carbon storage capacity depends on the climate. In the future, we will see demographic and technological changes that will result in changes in greenhouse gas emissions, and these will increase temperatures. Models can be used to determine the impact of climate change on soil organic carbon. There are several different models that differ in terms of input and output data and the suitability for specific locations. The RothC model is considered to be relatively straightforward in terms of obtaining input data, and is best suited for grassland. The CarboSOIL model is best suited for modelling organic carbon in areas of the Mediterranean climate. It provides information on the change of organic carbon to a depth of 75 cm, while the CENTURY model, which is also suitable for the Mediterranean climate, simulates the carbon dynamics in the upper 30 cm soil. As input climate data, the models use the results of general circulation models, which are based on emission scenarios. The purpose of this graduation thesis is to review and compare soil organic carbon models and their forecasts.

• Keywords: soil organic carbon, climate change, modelling, RothC, CarboSoil, CENTURY