Climatic factors play a crucial role in shaping the distribution areas of examined species. Alpine plants have evolved a variety of distinctive traits to adapt to hostile habitats, many of these specialized traits have been proven to enhance plants’ adaptation to low temperature conditions, such as trichomes, glasshouse bracts, and so forth (Peng et al., 2015; Song et al., 2013, 2015; Sun et al., 2014). Due to their high specialization to extremely low temperatures, alpine plants are more sensitive to warming. Temperature has become a key limiting factor for many alpine species, shaping the distribution range and driving the range shifts (Dolezal et al., 2016). Most examined species exhibit typical cold adaptation traits, like dense trichomes and low height. The assessment of factors importance reveals that species are strongly influenced by temperature–related factors, especially Bio3 (Isothermality). Isothermality, derived from the annual mean diurnal range (Bio2) and annual temperature range (Bio7), quantifies the oscillations of day–to–night temperatures relative to the summer–to–winter (seasonal/annual) temperature variations. Isothermality has been proven to impose significant restrictions on the distribution size and the northern limits of species, yet it is frequently overlooked because of collinearity (Huang et al., 2021; Yu et al., 2017). Previous studies show that the lower isothermality in alpine regions leads to pollinator limitation, which in turn restricts population dispersion (Miladin et al., 2022). For plants situated at higher altitudes, the temperature limitation may be more pronounced.