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中国农学通报

中国农学通报 ›› 2013, Vol. 29 ›› Issue (5): 149-154.doi: 10.11924/j.issn.1000-6850.2012-2564

• 生物质能源 • 上一篇    下一篇

基于能值分析的沼液不同利用方式的效益评价研究

吴飞龙 林代炎 叶美锋 翁伯琦   

  • 收稿日期:2012-07-20 修回日期:2012-09-07 出版日期:2013-02-15 发布日期:2013-02-15
  • 基金资助:
    国家科技支撑项目 “东南地区农牧废弃物多级循环利用技术集成与示范” (2012BAD14B15)。

The Efficiency Evaluation of the Different Biogas Slurry Utilization Based on Emergy Analysis

  • Received:2012-07-20 Revised:2012-09-07 Online:2013-02-15 Published:2013-02-15

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摘要： 为了更好的评价沼液利用的效益，通过能值研究方法，从子系统和复合系统2个层面，应用能值产出率、环境负载率、可持续指标和沼液能值产出率等指标评价与比较了4种不同的沼液利用方式的生态经济效益。结果表明：从子系统层面看，净能值产出率分别为果园1.73、蔬菜地1.50、牧草地0.70和鱼塘2.15；环境负载率分别为果园0.66、蔬菜地0.73、牧草地0.46和鱼塘0.26；能值可持续指数分别为果园2.62、蔬菜地2.06、牧草地1.50和鱼塘8.21；而沼液能值产出率分别为果园8.31、蔬菜地5.80、牧草地1.69、鱼塘2.92。从复合系统层面看，增加利用沼液环节提高了系统的净能值产出率，增强系统的可持续发展能力；同时，利用沼液还可增加系统的经济效益，提高产投比。

关键词: 离体快繁, 离体快繁

Abstract: In order to better evaluate the benefits of biogas slurry utilization, based on the emergy analysis methods, the ecological-economic benefits of 4 different patterns of biogas slurry utilization were evaluated and compared at the subsystem and system levels. The four energy indices, including energy yield ratio (EYR), environmental loading ratio (ELR), energy sustainable indices (ESI) and energy yield ratio of biogas slurry (EYRB) were analyzed. The results showed that, EYR of the orchard, vegetable land, pasture and fish ponds subsystems were 1.73, 1.50, 0.70 and 2.15 respectively; ELR of the orchard, vegetable land, pasture and fish ponds subsystems were 0.66, 0.73, 0.46 and 0.26 respectively; and ESI of the orchard, vegetable land, pasture and fish ponds subsystems were 2.62, 2.06, 1.50 and 8.21 respectively; Additionally, EYRB of the orchard, vegetable land, pasture and fish ponds subsystems were 8.31, 5.80, 1.69 and 2.92 respectively. Compared at the system level, EYR and ESI of the system of using biogas slurry were higher than those of not. And the system can obtain higher economic benefits by using biogas slurry.