1. Shaw N., Chinese Forest Trees and Timber Supply (T. Fisher Unwin, London, 1914).
2. Ministry of Forestry China's Forestry Yearbook (China's Forestry Publishing House Beijing 1997) (in Chinese).
3. Richardson S. D., Forest and Forestry in China (Island Press, Washington, DC, 1990).
4. Liu J., A Macro Inventory of China's Environments and Resources and Their Dynamics (China's Scientific Publication House, Beijing, 1996), p. 353(in Chinese).
5. Zhang P., Zhou X., Wang F., Introduction to Natural Forest Conservation Program (China's Forestry Publishing House, Beijing, 1999), p. 388(in Chinese).