Variability analysis of soil carbon and nitrogen storage under Prosopis cineraria, Calotropis procera and Ziziphus spinosa species in the South of Kerman

Considering the extent and surface area of ​​hot and dry areas, the study and identify these regions based on environmental aspects is very important for planning and optimal management. However, identification of tree species in these regions and the effects on soil fertility, dynamics and improvement are extremely important. In order to sustainable management, the effect of the land covers with different tree species of Prosopis cineraria (PC), Calotropis procera (CP) and Ziziphus spinosa(ZS) on soil carbon and nitrogen storages were considered in the South of Kerman Province. Soil samples were excavated from 0-20 cm depth and considered for measuring of bulk density, moisture, pH, EC, carbon, nitrogen, phosphorus, potassium, calcium and magnesium as well as leaf chemical characters including carbon, nitrogen, phosphorus, potassium, calcium and magnesium at the laboratory. ANOVA results showed significant statistical differences related to tree species and the without tree cover (WTC) area. Results showed that greater amounts of soil carbon and nitrogen storages were found under ZS tree stand, whereas the lower values of these characters were detected under WTC. The PC and CP species showed mode interstitial. The findings of this research are indicating that the areas with tree cover adapted to hot and dry climate in southern Kerman improve soil quality. Findings implies that ZS tree species based on reduction the effect of climate change, storages of carbon and nitrogen will be further strengthened than other tree species. Based on the characteristics of this study, in order to improve the quality and dynamics of the soil, as well as increase the carbon and nitrogen storage in vast areas of southern Kerman, tree planting with the ZS species can be considered and evaluated.