Naslov
Assessment of spatial variability of soil organic matter content in Eastern part of Croatia using Empirical Bayesian kriging

Autori
Đurđević, Boris ; Jug, Irena ; Vukadinović, Vesna ; Jug, Danijel ; Šeremešić, Srđan

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, ostalo

Izvornik
International conference "Soil organic matter and its impact on soil quality and production" / Jovan Crnobarac - Novi Sad : Poljoprivredni fakultet u Novom Sadu, 2017, 34-35

ISBN
978-86-7520-391-9

Skup
International conference "Soil organic matter and its impact on soil quality and production"

Mjesto i datum
Novi Sad, Srbija, 28.03.2017. - 31.03.2017

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
interpolation ; soil organic matter ; geostatistics ; soil degradation ; Empirical Bayesian kriging

Sažetak
Soil organic matter content (SOM) represents one of the main indicators of soil quality and health. Benefits of SOM reflect in all main soil properties, physical (increases soil aggregate stability, soil water capacity and also positively affects decrease of crusting and facilitates soli tillage), chemical (increases cation exchange capacity of soil and availability of essential soil nutrients) and biological (represents habitat and food for numerous live organisms in soil, increases microbiological diversity and soil food web). But, SOM also contains more than three times larger amount of carbon in comparison to the atmosphere or terrestrial vegetation. Because of that SOM represents an important sink for carbon sequestration. Agricultural practice in the Croatia is mostly intensive with mainly conventional tillage (deep moldboard plowing), and it is conducted with high use of artificial fertilizers. In addition, a large part of the crop residue is used for production of biofuels and other biomass energy, which is a precondition to lose large amounts of organic matter. The main objective of this research is to determine status of SOM content of Eastern part of Croatia. To conduct this research, 10 096 soil samples have been compiled from layer 0-30 cm and analysed in laboratory. Assessment of the unsampled locations was done using Empirical Bayesian kriging. The average value of SOM in the study area was 2.27%, and 83.3% of soil samples had SOM content lower than the 3%, which could indicate presence of some kind of soil degradation. Spatial analysis has shown that areas of low SOM values, lower than 3.0% are in majority identified in western and south-western parts of Eastern Croatia, which has mostly acidic soil reaction (predominantly Stagnosols). The created maps of SOM content can easily be used for highlighting the great importance of preserving and raising the SOM content and, through additional analysis, to suggest measures for restoration of degraded soils.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA