Wind erosion is one of the most important problems in arid and semi-arid regions. In many developed countries the need to address the issue of controlling wind erosion and quicksand has led to the establishment of programs specifically for vegetation restoration, soil conservation, and sand dune stabilization. One way to prevent the spread of desert areas with quicksands is to biologically stabilize them using compatible plant species such as Haloxylon. Natural regeneration of Haloxylon can lead to the survival and reclamation of natural habitats as well as hand-planted Haloxylon lands. In the present study, the natural regeneration of Haloxylon in hand-planted Haloxylon lands of Yazd province, including Ashkzar, Ardakan, Bafgh and Tabas regions, was investigated. eva‎luating the data and results of plantation management plans of three regions of Bafgh, Ashkzar and Tabas along with sampling of Ardakan Haloxylon lands, rainfall status, soil quality and quantity characteristics )including texture, EC, pH) and Density, geomorphological facies and regenerative status were determined in these four areas and the relationship between the measured characteristics and the rate of reproduction was investigated. In order to compare the data in homogeneous regions, both intra-group and inter-group, analysis of variance test was used in SPSS software. The results of comparing geomorphological facies showed that the more the soil texture in geomorphological facies moves from heavy clay to sandy silt, the more the regeneration and establishment of Haloxylon seedlings increases. The results showed that the studied areas have a significant difference in terms of average annual rainfall. It can be seen that the average rainfall in all areas is less than 100 mm and the conditions do not differ much in terms of Haloxylon reproduction. Comparison of soil properties in the studied areas showed that the soils of the areas have significant differences in terms of calcium, magnesium and pH parameters. The study of the relationship between soil characteristics and hemp regeneration in Ardakan region showed that there is a significant correlation between regeneration density and pH at a probability level of 1%. Also, a significant correlation was seen between the height of seedlings obtained from regeneration in Ardakan region and the percentage of sand and clay at the level of 5% probability. There was also a significant correlation between seedling diameter of seedlings and clay percentage at 5% probability level. The results of factor analysis of soil data showed that in the first group, the factors of electrical conductivity parameters and sodium uptake ratio are the most important in the regeneration and establishment of Haloxylon.

1/8/2022 12:00:00 AM

412

NE91

ولي اله حسني كمكوه