中国西南地区木薯燃料乙醇发展潜力及对温室气体减排的影响  

Potential of cultivation capacity of cassava fuel ethanol in Southwest China and its effect on greenhouse gas emission reduction

作　　者：尹芳[1] 刘磊[1] 江东[2] 刘睿[3] 

机构地区：[1]长安大学地球科学与资源学院,西安710054 [2]中国科学院地理科学与资源研究所,北京100101 [3]重庆师范大学地理科学学院,重庆400047

出　　处：《中国农业大学学报》2013年第6期18-26,共9页Journal of China Agricultural University

基　　金：中国科学院知识创新项目(KSCX2-YW-N-039);国防科工局高分辨率对地观测重大专项(30-Y30A07-9001-12/13);中央高校基本科研业务费专项资金资助(2013G1271103)

摘　　要：利用多因子综合分析和生命周期分析的研究方法,对中国西南5省区(重庆、四川、云南、贵州、广西)适宜木薯种植的宜能边际土地资源潜力、适宜性等级等进行研究,并对该区发展木薯燃料乙醇的能量生产及温室气体减排潜力进行了分析,结果表明:1)西南5省区适宜与较适宜木薯发展的土地资源分别为88.49万和456.62万hm2,主要集中于广西、云南,其中,广西适宜与较适宜的土地资源分别为83.30万和253.64万hm2,云南适宜与较适宜的土地资源分别为5.19万和162.36万hm2;2)若这些土地资源全部被利用,则该区木薯燃料乙醇的净能量最大总生产潜力为6 254.590万GJ/a;3)同时,该区规模化生产木薯燃料乙醇的总温室气体减排潜力为139.016万t/a。本研究结果可为国家及地方政府环境保护、温室气体减排目标和相关产业政策的制定提供参考。Firstly, spatial distribution, suitability degree and the total amount of marginal land resources suitable for cultivating cassava in Southwest China were identified using multi-factor comprehensive analysis method. Then, the life cycle net energy and greenhouse gas emission reduction capacity of cassava on marginal land with different suitability degrees were calculated, based on the expanded life cycle model for cassava fuel ethanol. The results showed that the areas of suitable and moderate suitable land resources for cultivating cassava were 884 900 and 4 566 200 hm^2 , respectively. The suitable and moderate suitable land resources are mainly concentrated in Guangxi and Yunnan. The areas of suitable and moderate suitable land resources for Guangxi were 833 000 and 2 536 400 hm^2 , respectively. These for Yunnan were 51 900 and 1 623 600 hm^2, respectively. Using these land resources, the maximum net production potential of fuel ethanol produced from cassava and the total greenhouse gas emission reduction capacity in each year would be 62 545 900 GJ and 1 390 160 t, respectively. The results has the potential to deliver technical methods for assessment of the development and environmental benefits of biofuels derived from energy plants.

关 键 词：木薯 燃料乙醇 边际土地 温室气体减排 

分 类 号：P967[天文地球—自然地理学]