Changes in carbon pool on arable soil under the different management practices and its prediction using the rothc model

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Changes in carbon pool on arable soil under the different management practices and its prediction using the rothc model

Popis výsledku v původním jazyce

Studies on soil organic matter have always been important for soil environmental characterization. Soil potential to sequestrate or release organic carbon depends on various factors such as soil type, land use/management, climatic conditions, agrotechnical measures etc. The main aim of this study is to show changes in soil organic carbon (SOC) stocks and their development based on modelling by the RothC model. A valuable data set was received from the Field Experimental Station of Mendel University in Zabcice. The unequal development of SOC sequestration under the Norfolk crop rotation and Monoculture of spring barley (Hordeum vulgare L.) was documented during the modelled period of 1972-2100. The RothC model recognizes five active compartments of SOC: DPM – decomposable plant material; RPM – resistant plant material; BIO – microbial biomass; HUM – humified organic matter, and inert organic matter (IOM). Each compartment undergoes a different rate of decomposition and through a first-order process was characterized by a unique rate. Two different management scenarios (Norfolk and Monoculture) and three climatic scenarios (MPI, MRI, CMSS) were modelled. The findings revealed that SOC stocks were primarily impacted by inputs of plant residues and the application of exogenous organic materials. The prediction until 2100 indicated a declining trend in SOC stocks under the monoculture management. Moreover, the outcomes underscored that the straw incorporation and intercrops can optimise the sustainability of SOC stock and grain yield of spring barley. Results also showed that SOC stock at the end of the 20th century was approximately 66 t/ha and moderate SOC sequestration (0.09 t/ha/year) was achieved.

Název v anglickém jazyce

Changes in carbon pool on arable soil under the different management practices and its prediction using the rothc model

Popis výsledku anglicky

Studies on soil organic matter have always been important for soil environmental characterization. Soil potential to sequestrate or release organic carbon depends on various factors such as soil type, land use/management, climatic conditions, agrotechnical measures etc. The main aim of this study is to show changes in soil organic carbon (SOC) stocks and their development based on modelling by the RothC model. A valuable data set was received from the Field Experimental Station of Mendel University in Zabcice. The unequal development of SOC sequestration under the Norfolk crop rotation and Monoculture of spring barley (Hordeum vulgare L.) was documented during the modelled period of 1972-2100. The RothC model recognizes five active compartments of SOC: DPM – decomposable plant material; RPM – resistant plant material; BIO – microbial biomass; HUM – humified organic matter, and inert organic matter (IOM). Each compartment undergoes a different rate of decomposition and through a first-order process was characterized by a unique rate. Two different management scenarios (Norfolk and Monoculture) and three climatic scenarios (MPI, MRI, CMSS) were modelled. The findings revealed that SOC stocks were primarily impacted by inputs of plant residues and the application of exogenous organic materials. The prediction until 2100 indicated a declining trend in SOC stocks under the monoculture management. Moreover, the outcomes underscored that the straw incorporation and intercrops can optimise the sustainability of SOC stock and grain yield of spring barley. Results also showed that SOC stock at the end of the 20th century was approximately 66 t/ha and moderate SOC sequestration (0.09 t/ha/year) was achieved.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

40101 - Agriculture

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů