An analysis of photosynthetic parameters among Schima superba provenances Acclimation of Lamina Mass Per Unit Area, Photosynthetic Characteristics and Dark Respiration to Growth Light Regimes in Four Tropical Rainforest Species Response of photosynthesis and respiration to weak light in seedlings of four capsicum cultivars Characteristics of photosynthetic and transpiration of three common afforestation species in the Loess Plateau Photosynthetic Capability of 12 Genotypes of Triticum aestivum