Evaluation of boron loading to soil profile for basin-scale by using TETrans in irrigated areas

Abstract

The research study was carried out in an area of 1500 ha located in Ankara-Kesikkopru Plain left river bank irrigation area. TETrans computer model which is a one dimensional solution transfer model was used in order to determine boron content of the soil profile and groundwater. Boron content which has accumulated in the soil profile between in 2000 to 2002 was estimated in order to determine the potential risk that may occur in the next 10 years. Measured soil boron levels and boron levels estimated from the model were statistically compared. It was seen that the relationship between the estimated levels and measured levels is significant. Results obtained were used as a database in Geographical Information System and alteration maps were prepared for soils that may be formed in time. According to research study results, it was seen that, as long as the present conditions throughout the plain continue, there would be a boron problem to a significant level in the future. Pollution maps that are obtained will help executive and decision-making units in displaying more clearly the problem which may occur in the future and preparing action plans. Key words: Trace element transport computer, geographical information system, soil and water resources, socio-economical development.