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Using different irrigation techniques in desert restoration with Haloxylon ammodendron

International Conference on Bioenergy, Environment and Sustainable Technologies
ABSTRACT:

Sejzi Plain, a deserts in central Iran, is located in east of Isfahan Province and it is the main desertification pole in Province. This area suffers increasing desertification due to harsh climatic conditions and man-made factors. Biological rehabilitation is an effective way in preventing desertification process. This implementation not only limitate the aforementioned problems by biomass and forage production but also has many side benefits. Saxaul tree is distributed in Central Asia including Iran, West-Afghanistan, Turcomania, Gobi Desert and china. It is a psammophyte, and grows in sandy deserts, on sand dunes. This species is tolerance for aridity, wind, salinity and limited nitrogen. So it is widely planted in the reclamation of arid areas in Iran since 1955. Water scarcity is going to be the major global issue and particularly water supplying in arid climates is the first step in tree planting. Therefore, in order to invent new water supplying methods, different irrigation tequniues were considered for Haloxylon.Ammodendron seedlings. The average annual rainfall in the study area (Sejzi Plain) is about 99 mm and annual evaporation is 1675 mm. The wind speeds differ from 1 to 16 m/s. To achieve the goal 5 irrigation treatments with 5 replications in a completely randomized design were used. Based on the results, suitable water supplying technique for saxaul sapling in these arid conditions are respectively; jug irrigation, aquasorb usage, surface stone coverage and Plastic isolation of the planting pits in comparison to the normal planting and watering. The saplings irrigated with the jug technique as the most efficient way show 84% higher length and 88% greater canopy diameter.

 

Conference Papers
Month/Season: 
Winter
Year: 
2013
File: 

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