Environmental parameters used in the environmental niche modelling (ENM) approach with a short description of the parameter and the source of the original data.

Parameters 1–10, calculated in two steps: i) an average (from the years 1950 to 2000) for each month (January to February), thus leading to 12 averages; (ii) calculation as detailed in the main text. Parameters 11–12: calculated from the annual average of the year 2000. Parameters 13–15: extracted from the 500 m MODIS vegetation continuous fields dataset, which are derived from monthly composites that are in turn derived from eight day composites. All 7 bands were used and smoothed via a 4×4 rectangular neighbourhood function. Parameters 16–17: after calculation data were ln-transformed and multiplied by 10 to assure compatibility with other environmental parameters.参数1至10通过两步法计算得到：(i) 针对1950年至2000年的各月份（1月至12月）计算平均值，由此得到12组平均值；(ii) 按照正文中详述的方法进行计算。参数11至12：基于2000年的年均值计算得出。参数13至15：提取自500米分辨率的中分辨率成像光谱仪（MODIS）植被连续场数据集，该数据集源自月度合成产品，而月度合成产品又由8天合成产品生成。采用全部7个波段，并通过4×4矩形邻域函数进行平滑处理。参数16至17：计算完成后对数据进行自然对数变换，并乘以10以确保与其他环境参数兼容。