APPLICATION OF GEOSPATIAL TECHNIQUES IN ANALYST DISTRIBUTION PATTTERN OF SOME SOIL PROPERTIES IN ERBIL PROVINCE, KURDISTAN REGION-IRAQ
The study area is located in Erbil province, Kurdistan region, Iraq (that extends from Latitude 35.436151N to 37.319894N and from Longitude 43.374316E to 45.080122E) and aimed explain the distribution of some soil properties depending on geospatial techniques. Fourteen geo-referenced soil pedons have been elected. The ArcMap 10.7 software has been used in this study. Bulk density generally increases with depth in studied pedons. Interpolated map for distribution of clay particles, appears the higher values of clay particles and fine soil texture are located at the north, northwest, and decreasing into the south, southwest. Clay content has different distribution patterns. An alkaline studied soil pH with low salts content. Organic matter and total carbonate decreased with depth and an increase pedogenic carbonate that has a positive significant correlation with both slope and elevation. Active carbonate has a strong correlation with clay particles. Soil gypsum and total nitrogen decreased with depth in most pedons. The study concluded that decreasing into the south and southwest. Soil organic matter tends to increase as the clay content increases and higher values of organic matter content are located at northwest and decreasing gradually to south and southwest. Soils have different distribution patterns of total and active carbonates along pedons. CEC decreased from northwest toward a southeast
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