Figure legend
Figure 1. Photosynthetic characteristics in stems of invasive plantMikania micrantha and three native plants on 20 days after defoliation. (a) Net photosynthesis at PPFD of 800 μmol m-2 s-1. (b) Day respiration. (c) Gross photosynthesis. (d) The increase of gross photosynthesis in the defoliation group relative to control group. Different letters above bars indicate statistical significance (P < 0.05). Abbreviations: Mm, Mikania micrantha ; Pn, Pharbitis nil ; Ps, Paederia scandens ; Pl, Pueraria lobata ;P n, net photosynthesis;R d, day respiration; P g, gross photosynthesis. △P g, the difference ofP g between the defoliated plants and normally growth plants.
Figure 2. Chlorophyll contents, Fv/Fm and ETR in stems of invasive plantMikania micrantha and three native plants on 20 days after defoliation. (a) Transverse section of the stems. (b-d) Chlorophylla , b and a /b ratio. (e) Maximal quantum yield. (f) Light response curve of electron transport rate. (g) Electron transport rate at PPFD of 1200 μmol m-2s-1. Different letters above bars indicate statistical significance (P < 0.05). Abbreviations: Mm,Mikania micrantha ; Pn, Pharbitis nil ; Ps, Paederia scandens ; Pl, Pueraria lobata ; Fv/Fm, maximal quantum yield; ETR, electron transport rate; PPFD, photosynthetic photon flux density.
Figure 3. Growth rate (a) in stems of invasive plant Mikania micrantha and three native plants after defoliation and the survival rate (b) on 30 days after defoliation. Abbreviations: Mm, Mikania micrantha ; Pn, Pharbitis nil ; Ps, Paederia scandens ; Pl,