中国能源作物生产生物乙醇的潜力及分布特点

基于中国后备土地资源潜力,该文分析了在不影响现有粮食和经济作物种植结构的前提下,利用宜耕边际性土地资源发展生物乙醇能源的生产潜力及空间分布.结果显示:长期而言,中国能源作物生物乙醇的总生产潜力在7400×104t以上;中短期而言,如果仅考虑其中集中连片的土地资源,则可生产生物乙醇2170×104t,约占中国2006年汽油消费量的41.4%;中国生物乙醇产量潜力区域差异悬殊,潜力最大的几个省(区)依次为新疆、甘肃、山东、江西和宁夏.

Potential yields of bio-ethanol from energy crops and their regional distribution in China

Based on the fundamental principle of no effect on the present agricultural structure of planting grain crops for food security and cash crops when developing bio-energy industry in China, the authors calculated the bio-ethanol potential yield by using arable marginal land resources, and the regional distribution of energy crops was also analyzed. The results show that: considering the total quantity of arable marginal land resources used for growing energy crops, the gross potential yield of bio-ethanol exceeds 74 million tons in China. If only considering centralized large areas of reserved land with the greatest potential for arable land exploitation, the potential yield of bio-ethanol is about 21.7 million tons, nearly 41.4% of yearly gasoline consumption in 2006. The potential yield of bio-ethanol in different regions of China is enormously different. Xinjiang Region, Gansu Province, Shandong Province, Jiangxi Province and Ningxia Region are the several areas with the largest bio-ethanol potential in China.