Shift of suitable habitat in Future
Range of species would shift with climate change, which had been
demonstrated by a larger number of observation and simulating studies on
species distribution(Bellard, Bertelsmeier, Leadley, Thuiller, &
Courchamp, 2012; Urban, 2015). Medicinal plants, as an important class
of resource plants, were always the first target of species distribution
modeling. According to previous studies, high suitable habitat of some
species would shrink, even disappear, others would increase, and still
others would remain stable in the future. Kurpis(Kurpis, Serrato-Cruz,
& Feria Arroyo, 2019), Zhao(Zhao et al., 2020) and Xie(Xie et al.,
2018) found the potential distribution of Tagetes lucida Cav.
(Asteraceae), Notopterygium incisum Ting ex H. T. Chang
(Apiaceae) and Eriocaulon buergerianum Körnicke. (Eriocaulaceae)
would decrease respectively in the future. Asase(Asase & Peterson,
2019) considered that the high suitable habitat of Alstonia
boonei De Wild (Apocynaceae) would be stable under future climate
scenarios. Kunwar(Kunwar et al., 2020) pointed out that there would be
more high suitable habitat for Dactylorhiza hatagirea (D. Don)
Soo (Orchidaceae) in the future. Shen(Shen et al., 2019) indicated that
adaptive cultivation regions for Panax quinquefolius L.
(Araliaceae) would expand by 9.16%–30.97% in 2070s. In our study, the
projections revealed that ranges of A. annua would change
dramatically in the future, its area of high suitable habitats would
decline in all mentioned periods and climate scenarios.