关键词: 大熊猫, 能量, 食物资源

Abstract: Daily energy intake of giant pandas and energy supply of bamboo resources were estimated in Mabian Dafengding Reserve, Liangshan Mountains. On a diet of 12.25 kg(fresh weight) of Qiong zhuea macrophylla leaves and stems, an adult panda could obtain about 15 378 kJ per day in spring, 27 856.2 kJ in summer-autumn, and 20 502.6 kJ in winter. The daily energy in take is just a little bit higher than the daily energy expenditure (14651～16 744 kJ ). The evidence suggests that the panda's nutritional margin of safety is relatively small. Therefore, giant pandas are prone to the environmental pressure. Pandas could utilize only about 123.5 kJ energy supply by Q. macrophylla per square meter. About 0.06 km ² of this bamboo stands could meet an adult panda’s annual energy expenditure.

Key words: Giant Panda (Ailuropoda melanoleuca), Energy, Food Resources