Poljoprivreda, Vol. 22 No. 1, 2016.
Izvorni znanstveni članak
https://doi.org/10.18047/poljo.22.1.7
Spatial modelling for describing spatial variability of soil physical properties in eastern Croatia
Igor Bogunović
orcid.org/0000-0002-8345-458X
; Sveučilište u Zagrebu, Agronomski fakultet, Zagreb, Hrvatska
Igor Đekmeti
; Sveučilište u Zagrebu, Agronomski fakultet, Zagreb, Hrvatska
Ivan Magdić
; Sveučilište u Zagrebu, Agronomski fakultet, Zagreb, Hrvatska
Matej Vrbanić
; Sveučilište u Zagrebu, Agronomski fakultet, Zagreb, Hrvatska
Stefan Matošić
; Sveučilište u Zagrebu, Agronomski fakultet, Zagreb, Hrvatska
Milan Mesić
; Sveučilište u Zagrebu, Agronomski fakultet, Zagreb, Hrvatska
Sažetak
The objectives of this study were to characterize the field-scale spatial variability and test several interpolation methods to identify the best spatial predictor of penetration resistance (PR), bulk density (BD) and gravimetric water content (GWC) in the silty loam soil in Eastern Croatia. The measurements were made on a 25 x 25-m grid which created 40 individual grid cells. Soil properties were measured at the center of the grid cell deep 0-10 cm and 10-20 cm. Results demonstrated that PR and GWC displayed strong spatial dependence at 0-10 cm BD, while there was moderate and weak spatial dependence of PR, BD and GWC at depth of 10-20 cm. Semi-variogram analysis suggests that future sampling intervals for investigated parameters can be increased to 35 m in order to reduce research costs. Additionally, interpolation models recorded similar root mean square values with high predictive accuracy. Results suggest that investigated properties do not have uniform interpolation method implying the need for spatial modelling in the evaluation of these soil properties in Eastern Croatia.
Ključne riječi
soil physical properties; GIS; mapping; Chernozem; interpolation models
Hrčak ID:
160279
URI
Datum izdavanja:
15.6.2016.
Posjeta: 1.500 *