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Proceedings Paper

Assessment of spatial and temporal soil moisture variability using Geographic Information System techniques
Author(s): Ahmed Fahsi; Teferi D. Tsegaye; Tommy L. Coleman; Andrew Manu; Z. Senwo
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Paper 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.

Paper Details

Date Published: 30 December 1997
PDF: 6 pages
Proc. SPIE 3222, Earth Surface Remote Sensing, (30 December 1997); doi: 10.1117/12.298137
Show Author Affiliations
Ahmed Fahsi, Alabama A&M Univ. (United States)
Teferi D. Tsegaye, Alabama A&M Univ. (United States)
Tommy L. Coleman, Alabama A&M Univ. (United States)
Andrew Manu, Alabama A&M Univ. (United States)
Z. Senwo, Alabama A&M Univ. (United States)


Published in SPIE Proceedings Vol. 3222:
Earth Surface Remote Sensing
Giovanna Cecchi; Edwin T. Engman; Eugenio Zilioli, Editor(s)

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