FIGURE 1.

Experimental design. (a) Schematic representation of the experimental procedures. (b) The arrangement of the saplings in the four boxes. In each box,12 saplings were planted. Three saplings of one species were covered with plastic bags and enriched with ¹³CO₂. (c) Four community boxes containing 12 saplings. (d) Sealed plastic bag covering the labelled plants. (e) Continued carbon detection by cavity ring down spectrometer (CRDS). (f) Concentration and flux measurements using infrared gas analyser (IRGA)