Study of water spreading effects on quantitative and qualitative changes of pastural cover: A case study in station of Sarchahan water spreading (Hormozgan province)

The ruination of agricultural and rangelands and gotten them out of production areas has been mad by over population and irregular use of natural resource to obviate.In many part of the world human are thinking to take a right advantage of soil and water resource in order to provide more food and compensate the ruination of flood that is arising from disproporationate function.Such as thing in Iran also has been thought about water spreading on poor rangeland to revive vegetation cover and store the aquifer.The main object of this study is investigation of water spreading influences on quantitative and qualitative variation of vegetation cover in the Sarchahan station in north of Hormozgan province since 2000-2005. For this purpose two areas were chosen. One of the water spreading net as a treatment and similar area in terms of vegetation cover and soil that it just not flood as a control.60 quadrats for water spreading area and 12 quadrat for control by 22 m and the items was recorded. This area is with a poor range condition and negative trend. In this study percentage of vegetation cover, density and forage production of rangeland plants were measured at water spreading and control area. ANOVA test showed there is no significant differences between percentage cover and productivity during 2000 –2003 years (p<0.05). But there is a significant difference between those factors at water spreading and control area in 2004 and 2005 years.Water spreding project to be succeeded to revival the rangeland depends up on the same spread of water flood over the lands and enough time flood during the year. More study during next years cause in better results.