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Volume :30 Issue : 112 2004      Add To Cart                                                                    Download

THE VARIATION OF SOIL PROPERTIES WITH SLOPE POSITION IN ASIR HIGH LANDS, SAUDI ARABIA

Auther : Marei Hussain Aal-Qahtani

 

         This study demonstrates quantitatively, that the soil of Southwest Asir highlands is generally loamy sand, shallow and somewhat rich in moisture, organic matter, organic carbon, nitrogen and phosphorus, but lack in CaCO3, potassium, electrical conductivity and pH, compared with the Northeast of Asir highlands. In the Northeast of the research area, the soil is mostly sandy loam to sand, deep and very lacking in moisture, organic matter, organic carbon, nitrogen and Phosphorus. Also, this region is affected by salinity. On the vertical level, deeper soils were found in the lower slopes whereas shallow soil is found in the middle and upper slopes. Soil moisture, potassium and electrical conductivity increase down-slope and decrease in the middle and upper slopes. Soil organic matter, CaCO3 and pH decrease along the slope units from top to bottom.

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