Figure 2.

Representative distribution of bulk leaf water δ¹⁸O_wl values of grass leaf sections for greenhouse-grown plants. For this specific grass blade (Miscanthus sinensis), the stem source water δ¹⁸O value was −12.5‰; all other sampling parameters were the same as in Table 1. All grass species mentioned in this study were sampled in the same manner and showed similar results.