مقايسه پنج روش ايجاد سايبان زنده و غيرزنده در مناطق گرم و خشك (مطالعه موردي: محوطه دانشگاه يزد)

The comparison of biotic and nonbiotic methods of shading in dry and warm regions (Case study: Yazd University Campus)

The sunshine, temperature, and cost of five kind of shading structures including Date mat, Straw mat, Board, Tarpaulin, and Iranit; and the height, canopy cover, and vigor of 5 species of climbing plants including Rosa banksiae Ait, Lonicera caprifoliom L., Wistaria sinensis (sims.) DC., Forsylhia suspense (Thumb.) vahl., and Vitis vinifera L. were compared by using a completely randomized design with 3 replications for three years in Yazd University Campus. The faculties, staff and students of university were interviewed for the necessity of planting bushes at alleys of campus for shading. The results of non-biotic structures showed that there are significant differences among treatments and control (p>0.05). However, there were not any significant differences among treatments. Furthermore, the costs of shading structures were compared. In biotic shading the height of Wistaria sinensis was significantly different from other species (P<0.05). But there were no significant differences in the canopy cover and vigor of Wistaria sinensis, Rosa banksiae, and Lonicera caprifoliom. Most of people who were interviewed highly emphasized the necessity of plantation as shaded bushes.