“…Therefore, involving other categories of factors, especially those easy to obtain and of higher spatial/temporal resolution, is hopefully a promising future direction. These may include soil parameters, such as texture, moisture, microbial biomass, and C:N:P stoichiometry [55,56], and plant traits and productivity proxies, such as AGB, BGB, and NDVI [23,57]. Moreover, in recognizing the lack of interaction-handling mechanisms [40] in our modeling framework, it is desirable to explicitly consider the interactions between predictor variables, especially when a categorical variable is involved, in future model development.…”