Figure 6

Relationship of average annual aboveground net primary production (ANPP) with average annual precipitation at a continental scale (A, a filled circle represents the point of the lowest ANPP with high precipitation at the meadow site) [data from Knapp and Smith [47]]; relationship of community aboveground biomass with January-July precipitation in L. chinensis site (B, open squares, dashed line) and S. grandis site (filled squares, solid line) in the Inner Mongolia grassland [data from Bai et al. [2]]; and relationship of L. chinensis shoot biomass and annual precipitation along the Northeast China Transect, a precipitation gradient [C, data from Wang and Gao [8]].