This is the report of a field work in Wolong Natural Reserve(1982~1988)which inves-tigated the kind of bamboos that constitute the diet of the Giant Panda. The work was a systematic eco-bio-logical study of Bashania fangiana:the growth of its subterraneous and terraneous stems,flower and fruit;the age identification of the bamboo and its stalk;the measurement and evaluation of its biomass.The reportwill provide a scientific basis for the conservation of Giant pandas and the expansion of Bashania fangiana di...