Abstract: In this paper, the cassava’s ethanol productive potential and its spatial distribution in China were analyzed, based on the climatic, topographic and soil data, and by the method of ArcGIS 9.2 spatial analysis. In this country, the regions suitable for planting cassava and with the highest cassava’s ethanol productive potential mainly distributed in the southern provinces such as Guangxi, Guangdong, Fujian, Yunnan, Jiangxi, and Hainan. However, the suitable but unused lands for cassava in these regions were quite small, only 1.53×10.4 hm², and the cassava’s ethanol productive potential from these lands could only satisfy 1.0% of the China total demand for E10 ethanol gasoline. To fully satisfy the present demand for E10 ethanol gasoline in China, the total area for planting cassava would be expanded 4.7-5.7 times, which is hard to achieve, considering China’s food security. Therefore, the prospect that the present cassava’s ethanol production in China could meet the future demand for bioethanol of the country would be not optimistic. It was suggested that in the development planning of cassava ethanol, our related institutions and industries should fully consider the availability of raw materials, and not enlarge the cassava ethanol production blindly.

Key words: Orchid, Mycorrhiza, Secretion, Extraction