Zoning of Land Sensitivity to Gully Erosion in Zavvarian Basin, Qom Province

The most important form of soil erosion is gully erosion which reduce production amount, can restrict land use seriously and can be a serious danger for fences, roads and different structures. A gully is a channel or small valley with relatively steep slopes which occurs after heavy rainfall or by water erosion caused by snow melting. The gully erosion includes an area of 1085/80 acres of Zavvarian basin and close to 7.77 percent of arable lands of the case study area. Thus it is necessary to recognize effective factors in formation and development of the gullies and also to do the zoning of land sensitivity to gully erosion in order to optimize the management of the risk. This study aimed to identify the gully erosion effective factors, growth and expansion of this type of erosion and finally review and analysis of these factors.