Effect of Floodwater Spreading on Some of the Quantitative Characteristics of Vegetation (Case Study: Bafq Moogerdi Field in Yazd)

Using of water spreading system is one of the effective methods in order to utilize seasonal runoff and temporary flowing, which is performed for different purposes such as soil modification, vegetation increase, and underground water table sustenance and soil erosion prevention. In order to evaluate the water spreading effects on quantitative changes of vegetation, Mugerdi aquifer in Bafgh city was chosen and three fields as a water spreading section and 2 fields as a witness (without water spreading) were considered. Sampling was done within these five pieces. For this purpose, 2 transect with 150 meter length in each part and 5 transect with 2 m2 area over each transect were based according to vegetation distribution. Canopy cover percent and density were recorded in these plots. The current year growth as a plant production measured using clipping and weighting method. After data gathering, the statistical analysis was done by t-test. The results are representative of significant differences between vegetation cover percent and its density at 5 percent level and production at one percent level. Moreover, our results show the increasing of the number of species (with palatability class 1 and 2) in the water spreading field in comparing with control field.