Abstract: Fargesia denudata in Min Mountains and F. robusta in Qionglai Mountains are forage species with the highest foraging frequency by wild giant panda. Taking F. denudatain Wanglang Nature Reserve andF. robusta in Wolong Nature Reserve as the study objects, we compared their forage quality through measuring nutritional components, tannins and total phenols content, inorder to provide reference for the establishment of future potential habitat, corridor and pure plantation with favorable bamboo species for wild giant panda. The results were as follows: (1) F. denudata was superior to F. robusta in terms of crude protein and crude fiber concentrations (P<0.05). (2) F. denudatawas inferior toF. robusta in the contents of calcium in shoots and stems, and phosphorus in shoots and leaves (P<0.05). (3) For concentrations of tannins, total phenols, and total amino acids, the leaves ofF. robusta were more superior (P<0.05), whereas shoots and stems of F. denudata were more superior in terms of tannins, and its shoots in terms of total phenols and stems in terms of total amino acids were more superior (P<0.05). (4) With regard to crude fat, although the stems of F. denudata and the shoots and leaves of F. robusta were slightly superior to the counterparts, but the differences were not statistically significant (P>0.05). We concluded that both species had advantages and disadvantages in forage quality with respect to nutritional components, tannins and total phenols. If used together, they would be complementary in intake of crude protein, total amino acids, calcium and phosphorus, and can diminish the intake of tannins and total phenols. As those two bamboo species are preferred forage species of giant panda, mixture of both could be planted in the potential habitats, corridors, and pure plantation forest establishments in the related areas of the Min Mountains and Qionglai Mountains.

Key words: afforestation and forest management, net carbon sequestration., carbon leakage, greenhouse gas emission