江苏省农作物秸秆的生物天然气潜力及其温室气体减排估算

Biogas Potential of Crop Straw and the Estimation of Reduction for Its Greenhouse Gas Emission in Jiangsu Province

以适宜我国江苏省生物天然气生产的各类农作物秸秆的资源量为基础,以江苏省生物天然气的生产潜力为核心讨论其温室气体减排潜力。通过筛选的草谷比系数对江苏省秸秆资源进行全面系统的估算,并对江苏省秸秆资源量的区域分布规律进行探讨。研究结果显示,2012年江苏省理论秸秆资源量约4 840万t,其中水稻秸秆占秸秆资源总量的49%,小麦秸秆约占26%;可获得量约为3 934万t;秸秆的能源资源量为2 359万t。秸秆的生物天然气潜力为638 641万m3,其温室气体减排潜力为1 114.43万t。江苏省秸秆资源分布苏北地区最高,苏中地区其次,苏南地区最低。该研究结果可为江苏省秸秆资源利用提供参考依据。

This article is based on different kinds of crop straw resources in Jiangsu Province,which is appropriate for producing bio gas.Meanwhile,it is focusing on the production potential of bio gas and discussion of its potential for greenhouse gas emission reduction. We make a comprehensive estimate of straw resources in Jiangsu Province by screening grass valley ratio coefficient,and make an investigation on regional distribution of straw resources in Jiangsu Province. The results show that the theoretical straw resources of Jiangsu Province in 2012 is about 48. 4 million tons. The rice straw accounted for 49% of total resources and wheat straw contributed to 26%. The availability reaches about 39. 34 million tons. In 2012,straw energy resources in Jiangsu province is 23. 59 million tons. Bio gas potential of crop straw is6 386. 41 million cubic meters,and the estimate of reduction for its greenhouse gas potential is 11. 144 3 million tons. The northern area of Jiangsu Province tops the highest stock of straw resources,the middle area comes to the second and the southern region ranks the last. The results can provide a reference for straw resource utilization in Jiangsu Province.