Potential distribution of the rare and endangered Satyrium Species in
China under climate change
Abstract
Satyrium is an endangered and rare genus of plant that has various
pharmacodynamic functions. In this study, MaxEnt default parameters were
adjusted by the ENMeval package. Optimized MaxEnt models were used in
analyzing potential geographical distributions under current and future
climatic conditions (the 2050s and 2070s) and dominant environmental
variables influencing their geographic distribution. The results
provided reference for implementation of long-term conservation and
management approaches for the species. The results showed the area of
the total suitable habitat for S. ciliatum in China is 32.51 × 104 km2,
the total suitable habitat area for S. nepalense in China is 61.76 × 104
km2, and the area of the total suitable habitat for S. yunnanense in
China is 89.73 × 104 km2 under current climatic conditions. The
potential suitable habitat of Satyrium is mainly distributed in
Southwest China. The major environmental variables influencing the
geographical distribution of S. ciliatum were isothermality (bio3),
temperature seasonality (bio4), and mean temperature of coldest quarter
(bio11). Environmental variables such as isothermality (bio3),
temperature seasonality (bio4), and precipitation of coldest quarter
(bio19) affected the geographical distribution of S. nepalense; and
environmental variables such as isothermality (bio3), temperature
seasonality (bio4), and lower temperature of coldest month (bio6)
affected the geographical distribution of S. yunnanense. The
distribution range of Satyrium was extended as global warming increased,
showing emissions of greenhouse gases with lower concentration
(SSP1-2.6) and higher concentration (SSP5-8.5). According to the study,
the distribution of suitable habitat will shift with a change to higher
elevation areas and higher latitude areas in the future.