The present paper .reports the relationships between light, temperature and photosynthetic production of Litsea glutinosa (Lour.) C. B. Rob. in a small natural forest in Xiamen, Fujian Province. The photosynthetic production was determined by Sach's dry-weight method in one day every half month through one year. Light intensity, air temperature and relative humidity around the crowns of the adult and the subordinate young trees were determined once at an hour's interval from 6 o 'clock in the morning to 6 o...