Comparing Important Elements between Litter and Aerial Parts in Two Rangeland ‎Species of Shazand, Arak

After identification of the species’ site in Shazand, Arak, samples of aerial parts and litter were ýcollected randomly and systematically in the known sites at the end of the growing season ýý(summer) so that for analyzing the features of these species, 10 plots were installed along 4 ýtransects. After data gathering, they were analyzed by the independent T. test and the variance ýanalysis test. The Comparison of the aerial parts and the litter in the range species, analyzed in ýthis study, showed that there was a signification difference between OM, C & ADF ratios in the ýaerial parts and the litter of these species. Quantitatively, the amount of N, C, OM, P, C/N in the ýlitter was more than the aerial parts, whereas, the amount of k in the aerial parts was more than ýthe litter. As a whole, in Astragalus ammodendron, the ratio of C to N was the least among the ýother species, so the quality of its litter, aerial parts, and soil amendment was much better.ý