“…All these traits together have probably resulted in its presently high level of genetic diversity at the species level. Moreover, many researchers have considered that habitat fragmentation, location, and population size have high impact on genetic diversity within populations (Feng et al, 2006;Arunkumar et al, 2012;Liu et al, 2013;Ghaffari et al, 2014). In the present study, the desert steppe group (PA, PB) exhibits a higher degree of genetic diversity than the typical steppe group (PC, PD, PE, and PF), This result was consistent with population size, suggesting that fragmented habitats, migration (decreased or absent) between populations, and genetic drift have probably contributed to the loss of diversity in the populations, especially in PF.…”