3.3 Suitable Distribution Areas for T. sinense under
Current Climatic Conditions
Currently, T. sinense finds suitable habitat across approximately
7.24% of China’s total land area. Central Sichuan, northwestern Yunnan,
western Guizhou, and southwestern Hubei emerge as primary distribution
hubs, with suitable areas radiating outward in distinct patterns (Fig.
4). Notably, highly suitable areas connect with moderately suitable
regions, while less suitable areas extend from them. Compared to the
current distribution, new suitable areas have emerged along coastal
regions. Expansion of T. sinense distribution is observed in
provinces such as Chongqing, Guizhou, and Hunan, while the species’
range remains largely unchanged in other regions.