Spatial Modeling of Soil Salinity Using Remote Sensing, GIS, and Field Data

ISBN-13: 9783639065978 / Angielski / Miękka / 2008 / 112 str.

Ahmed Eldeiry; Luis Garcia

Opis

The environmental damage that salinity can cause is massive. In its early stages, soil salinization reduces soil productivity, but in advanced stages, salinization kills all vegetation and transforms fertile and productive land to barren waste. Remote sensing data has great potential for monitoring dynamic processes, including salinization. Any integration of field data, GIS, and remote sensing is considered weak unless some strong statistical measures are introduced. This study has shown the benefit of using satellite images in generating accurate soil salinity maps. Corn and alfalfa crops were selected as indicators of soil salinity. Five images were acquired from Aster, Ikonos, and Landsat to check the correlation between measured soil salinity and remote sensing data. Observed data was used in conjunction with satellite images. Three models were applied to predict soil salinity from remote sensing: the ordinary least squares model (OLS), spatial autoregressive model (SAR), and modified kriging model. This study has demonstrated a more efficient and accurate way of estimating soil salinity from remote sensing data that should help the efforts toward sustainable agriculture.

O autorze

Eldeiry, Ahmed Ahmed Eldeiry earned his PhD from Colorado State University. He is interested in the use of GIS, remote sensing, and spatial modeling techniques in water quality analysis and in the management and operation of agricultural lands. He has more than 20 publications and has worked in several irrigation projects in the USA and overseas. Luis Garcia, and Ahmed Eldeiry earned his PhD from Colorado State University. He is interested in the use of GIS, remote sensing, and spatial modeling techniques in water quality analysis and in the management and operation of agricultural lands. He has more than 20 publications and has worked in several irrigation projects in the USA and overseas.