| Autor: |
Eluwole, A. B., Olorunfemi, M. O. |
| Předmět: |
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| Zdroj: |
Malaysian Journal of Soil Science; Dec2020, Vol. 24, p51-66, 16p |
| Abstrakt: |
Statistical and spatial approaches have been used to determine the relationship between in-situ resistivity, soil moisture content and pH. These are done to establish the extent to which resistivity measurements can be used in mapping selected soil properties. Soil resistivity measurements were taken via a Wenner array platform having an electrode spacing of 8 cm. Soil samples were taken at 0-3 cm depth. The samples were analysed for moisture content and pH. Clayey sand and sand textural classes were deduced from resistivity values (210-750 ohm-m and >750 ohm-m respectively). Moisture content values were classified in conjunction with texture as unavailable water (UW) and available water (AW). pH values were classified as moderately acidic (5.2 - 6.0), slightly acidic (6.1 - 6.5) and neutral (6.6 - 6.9). A moderate inverse relationship was observed between resistivity and moisture content. The spatial correlation between resistivity-derived textural classes and moisture content classes was 62%. Resistivity was also found to be inversely correlated with pH. Spatially, higher resistivity zones were abundantly associated with moderately acidic pH zones, while lower resistivities correlated with slightly acidic to neutral pH zones - thereby bringing the spatial association between resistivity and pH to 60%. The pilot/plot-scale study concluded that to a satisfactory extent, in-situ soil resistivity measurements can be adopted as a complimentary tool for selected soil properties mapping. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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