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ŠUMARSKI LIST 9-10/2017 str. 22     <-- 22 -->        PDF

While the differences between forest soils and grassland soils, and forest soils and agricultural soils were found to be statistically significant (p < 0.05), the difference between agricultural and grassland soils was not significant. The values of water stable aggregates (WSA) were influenced by LUTLC and aspect, with a significant interaction (Table 2). The soils of cultivated land were statistically less stable. The values of WSA were significantly larger in the forest and grassland soils than in the cultivated soils (Fig. 6 a).
When the infiltration rates in both aspects were compared; the highest infiltration rate (54.0 cm h-1) was measured in agricultural surface soils and the lowest rate (4.01 cm h-1) was measured in grassland soils (Fig. 7).
When the infiltration rate was statistically analyzed, differences found in terms of all land use types were statistically significant at p < 0.01 (Table 2). Due to higher litter accumulation and higher availability of materials such as lignin, polyphenol, and resin that give soils hydrophobic characteristics in the surface of forest soils in the southern aspect, the infiltration rate in the southern aspect was measured to be lower (7.4 cm h-1) than the northern aspect (10.9 cm h-1) (Table 2). Moreover, the infiltration rate of grassland soil in the southern aspect was measured higher than the grassland soils of northern aspect owing to higher levels of compaction from over grazing animals in the pluvial depending on the soil moisture of grassland. In agricultural soils on the other hand, again, depending on the moisture content, the infiltration rate was measured to be higher in the southern aspect than the northern aspect due to cultivating the soils in the northern aspect during the wet period. Except the extreme case of forest soils, the infiltration rates of soils of grassland and cultivated lands in the south facing slope were measured to be higher.
Abbreviations
Kratice
N – north, S – south, pH – soil reaction, ECe – electrical conductivity, WSA – water stable aggregate (%), SOM – soil organic matter (%), TN – total nitrogen (%), AWC – available water capacity (%), BD – dry bulk density (g cm-3), IR – Infiltration rate (cm hr-1), Ks – saturated hydraulic conductivity (cm hr-1)
Lower case letters indicate statistically significant differences among soil properties affected by the different LUTLC (p < 0.05)
Upper case letters show statistically significant differences between land use for the cases that there were interactions between land use type and aspect (p < 0.05)
The same letter means that land use types are not statistically different, A > B > C, a > b > c
N – sjever, S – jug, pH – reakcija tla, ECe – električna provodljivost, WSA – agregat stabilan u vodi (%), SOM – organska tvar u tlu (%), TN – ukupni dušik (%), AWC – dostupni kapaciteti vode (%), BD – gustoća tla (g cm-3), IR – stopa infiltracije (cm hr-1), Ks – zasićena hidraulička provodljivost (cm hr-1)
Mala slova ukazuju na statistički značajne razlike među svojstvima tla na koje utječu različiti LUTLC (p < 0.05)
Velika slova pokazuju statistički značajne razlike između korištenja zemljišta u slučajevima kada je bilo interakcija između načina korištenja zemljišta i ekspozicije (p < 0.05)
Isto slovo znači da nema statistički značajne razlike između načina korištenja zemljišta, A > B > C, a > b > c