Physio-Chemical Properties of Tidal Flats Sediments in Iraqi Coastline, Northwest of Arabian Gulf

Abstract

The quantitative and qualitative physic-chemical properties considered in more than 15 geographical sites were selected along the Iraqi coastline. The grain size analysis and the EC, pH, TDS, K, Na, Mg, Ca, HCO3, Cl, SO4 were estimated in the sediments sample. Three types of soil textures dominate which are sandy clay, sandy clay loam and clay loam were observed in the present study. The results show that the pH value ranges from7.67-8.19, EC (23-68.45 dS/m), TDS (14720-43808 ppm), Na (6388-20746 ppm), K (73.225-211.875ppm), Ca (306.25-537.5 ppm), Mg (675-2475ppm), Cl (6160-18350 ppm), SO4 (1680-4080 ppm), HCO3 (93.75-225 ppm), SAR (37.61-107.95). The analytical results for the surface samples presented the impact of both solodization and salinization processes. They are shown from the high values of EC and domination of Na in the exchangeable complex. The ions occur in the following concentration order: Na > Mg > Ca > K and Cl > SO4 > HCO3.

Spatial Analyzing of the Chemical Soil Properties for the Sanam Mountain- Al Zubair Region South of Basra Province and Diagnosis of its Effects on Soil Qualities Using Remote Sensing Technology and GIS

“…Calculate the Sodium Adsorption Ratio (SAR), and the percentage of sodium dissolved in the soil (Na%)), to determine the extent of soil risk, and whether it could be considered safe for agricultural uses when the concentration of chemical elements in the soil exceeds the permissible limit, using the following eq. ( 2& 3) [17,8]:…”

“…The concentrations of TDS give the amount of soil salinity, quality, and suitability for agricultural and other uses. The EC reflects the ability of the soil solution to conduct electrical current and its direct relationship to the TDS [8,9,10]. By employing modern technologies represented by geographic information systems and remote sensing, the obtained soil samples positions from the fieldwork are projected on the satellite scene and prepare a map for their spatial distribution, using Quantum Geographic Information System (QGIS) program [11].…”