In this study, potential habitat of two species, Kermani Calligonum and Lentil Bead Salmaki in Sistan region was determined by using geographic information system (GIS) and measurements of distance techniques. For intra-regional study, five habitants were randomly selected and in every location, 10 soil profiles were dug to a depth of 45 cm and soil samples were taken. According to samples taken in each profile parameters such as EC, texture, pH and organic matter in Soil Other physical parameters at each site such as altitude, temperature, evaporation, Micro topography conditions and the depth of the ground water level was determined using available resources and maps. The required maps with a scale of 1: 50,000 digital maps were produced using GIS software. After analyzing the data, suitable conditions for the growth of the two species in the region and due to these conditions, requirements gathering and in the absence of maps were prepared for each soil sample components such as EC, texture, pH and organic matter was determined. Results show that Lentil Bead Salmaki in comparison with Kermani Calligonum is able to grow in soils with high salinity, less organic matter and soils with light texture and also tends to thrive and grow in acid soils. Finally, by combining different layers of information for each species, it was found that from total study area of 653345 hectares, three regions including 45,896 hectares (7.02%) were suitable for growing Kermani Calligonum. 29,446 hectares (4.5%) of this area belongs to habitat of Kermani Calligonum. Approximately remaining 16450 acres (2.25% of the total area), is potential habitat and the results also indicated that three areas consisting of 8223 hectares (1.25%) is suitable for Lentil Bead Salmaki growth. 1962 hectares (0.3%) of this area belongs to Lentil Bead Salmaki habitat and the remaining 7546 hectares (0.95%) is the area of potential habitat. The accuracy of determining the habitat (finding location) of the mentioned species is estimated to be over 95%.
کلید واژگان :habitat, information layers, finding location, soil profile, Sistan
ارزش ریالی : 600000 ریال
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