2.6 Planning of wild tending area
To serve the wild tending action of T. chinense under climate
change and land use change, the grassland types in 2015, 2050, 2070, and
2090 were superimposed to obtain grass stability region this century.
Considering the prohibition of the development of nature reserves, the
existing protection areas in China were removed from the current high
suitable areas. By using the core area zonation algorithm in ZONATION4.0
software (https://www.helsinki.fi/), the layers of the high suitable
areas in different climate scenarios in the grass stability region were
superimposed. The weight of each layer was set to 1, and other
parameters were the default values (B. Chen et al., 2023; B. Zhang et
al., 2023). The natural discontinuity method was used to classify the
output layers from 0 to 1, and the wild tending areas with low, medium,
and high suitability of T. chinense were obtained.