China's largest tropical rain forest in the Xishuangbanna Nature Reserve in Yunnan Province, will get further protection when the reserve is enlarged from 247,000 ha to 533,000 ha. Xishuangbanna has at least 58 species of rare or endangered plants, 15 per cent of China's total number, and is home to 102 species of mammals and 427 species of birds, a quarter and a third of China's total, respectively.