Contributions of climatic factors
Potential distribution of species strongly depended on environmental
factors, especially climatic factors. During model simulating, variable
importance and response curves were figured out to indicate the
relationship between distributions and environmental variables (Fig.
2a). Each factor played a different part in different algorithms, and
showed out different importance. Dominant environmental factors were
figured out for each algorithm.
BIO9
(mean temperature of driest
quarter) performed the best among seven variables in all of 10
algorithms. According its response curves plotted out in Fig. 2b, the
proper mean temperature of driest quarter for A. annua ranged
from 4.8 to 23.3℃.