University of Tehran Journal of Range and Watershed Managment 5044-2008 67 1 2014 04 21 Effects of Agricultural Activities on Land Degradation in the Khatam City Effects of Agricultural Activities on Land Degradation in the Khatam City 61 72 50828 10.22059/jrwm.2014.50828 FA Gholamreza Zehtabian Professor, Faculty of Natural Resources, University of Tehran, Karaj, Iran 0000-0002-0597-0757 Hassan Khosravi Assistance Professor, Faculty of Natural Resources, University of Tehran, Karaj, Iran 0000-0002-2594-6199 Ali Azareh PhD Student, Faculty of Natural Resources, University of Tehran, Karaj, Iran 0000-0003-2813-6092 Journal Article 2012 03 03 Need to Increasing agricultural land in order to improve food resources in the past two centuries recent<br />lead to widespread changes in land use and improper management of these lands. Continue this<br />process can lead to land degradation and desertification, and improve such soils is very costly;<br />Therefore, prevention of land degradation is more desirable. This function requires to research on the<br />utilization of land agricultural and how to use. With this aim, the Khatam city was selected as the<br />study region and various maps of the region, including soil, land use and height maps was prepared to<br />help ArcGIS9.3 and ENVI software. Four dominant land region mention mono cultivated and multi<br />cultivated systems under irrigation, garden lands and range lands as control treatments were<br />considered as the treatments. The soil was sampled and soil factors in two corrective factors, including<br />correction factors N, P, K, CO, Caco3, Mg and damaging factors Hco3, Cl, Na, pH, EC and SAR at<br />depth 0 to 30 cm of the soil surface horizons were studied. Factors the design of split plots showed that<br />there are significant differences between treatments in the region and soil of region is relatively poor<br />from CO, N, K and P in soils Rdhy. The comparison of treatment means with Duncan Mean<br />Comparison indicated that the garden lands as the most suitable treatments and range lands as the most<br />unsuitable one. Need to Increasing agricultural land in order to improve food resources in the past two centuries recent<br />lead to widespread changes in land use and improper management of these lands. Continue this<br />process can lead to land degradation and desertification, and improve such soils is very costly;<br />Therefore, prevention of land degradation is more desirable. This function requires to research on the<br />utilization of land agricultural and how to use. With this aim, the Khatam city was selected as the<br />study region and various maps of the region, including soil, land use and height maps was prepared to<br />help ArcGIS9.3 and ENVI software. Four dominant land region mention mono cultivated and multi<br />cultivated systems under irrigation, garden lands and range lands as control treatments were<br />considered as the treatments. The soil was sampled and soil factors in two corrective factors, including<br />correction factors N, P, K, CO, Caco3, Mg and damaging factors Hco3, Cl, Na, pH, EC and SAR at<br />depth 0 to 30 cm of the soil surface horizons were studied. Factors the design of split plots showed that<br />there are significant differences between treatments in the region and soil of region is relatively poor<br />from CO, N, K and P in soils Rdhy. The comparison of treatment means with Duncan Mean<br />Comparison indicated that the garden lands as the most suitable treatments and range lands as the most<br />unsuitable one. https://jrwm.ut.ac.ir/article_50828_bb62eddac0eea1f94c1436348c113c56.pdf