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30 December 1997 Assessment of spatial and temporal soil moisture variability using Geographic Information System techniques
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Abstract
The objectives of this study were (1) to evaluate soil moisture variability under different land cover conditions and (2) to explore the effectiveness of geographic information system (GIS) technology in assessing the spatial and temporal soil moisture variability. The research was conducted on four 60 by 50 meter plots located on bare smooth soil, bare rough soil, mixed vegetation, and grass. From each plot, 5 cm depth soil samples were taken on a 10 by 10 meter grid at three different dates. Soil samples were oven dried to obtain the gravimetric soil moisture content. This study showed that GIS technology can be a valuable tool in accurately representing and examining the spatial and temporal variability of soil moisture under different soil cover conditions. Visual inspection of the 3-dimensional (3-D) representation of the soil moisture data showed notable variations within each plot among the different fields, and over time. Mean comparison was performed using the T-test to statistically evaluate and confirm the significance of these differences. Because the soil moisture measurements were taken on a relatively small area and within short time periods, although notably different, the spatial and temporal moisture variability was not statistically significant.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ahmed Fahsi, Teferi D. Tsegaye, Tommy L. Coleman, Andrew Manu, and Z. Senwo "Assessment of spatial and temporal soil moisture variability using Geographic Information System techniques", Proc. SPIE 3222, Earth Surface Remote Sensing, (30 December 1997); https://doi.org/10.1117/12.298137
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