摘要
为了对贵州种植业、养殖业相配套的循环农业模式推广提供科学依据,运用能值分析法对贵州猪-沼-粮、菜(果)规模化养殖场循环农业模式能值投入和产出进行了分析,对该模式的资源利用效率、环境压力和可持续发展指数等进行了评估。结果表明,与单一生猪养殖业相比,该模式的自然资源利用从0增加至2.02%;系统净能值产出率和可持续发展指数分别为18.60和25.12,比单一养殖业提高245.0%和249.37%;环境负载率为0.74,降低了22.10%。猪-沼-粮、菜(果)循环链有利于降低环境压力,提高系统可持续发展指数。
The energy input and output of ＂pig-methane-grain（vegetable,fruit）＂ circular agriculture in a scaled pig farm were analyzed and its indexes of resource utilization efficiency,environmental stress and sustainable development were evaluated to provide the scientific basis for popularization of the circular agricultural model.The results showed that the natural resource utilization rate increased from 0 to 2.02 percent compared with single pig raising,the net energy output rate and sustainable development indexes were 18.60 and 25.12,245.0% and 249.37% higher than those of single pig raising respectively,and the environmental loading rate was 0.74,22.10% lower than that of single pig raising.The ＂pig-methane-grain,vegetable（fruit）＂ circular chain can reduce environmental stress and improve the systemic sustainable development index effectively.
出处
《贵州农业科学》
CAS
北大核心
2011年第1期148-151,共4页
Guizhou Agricultural Sciences
基金
贵州省科技重大专项计划项目"贵州‘猪-沼-粮
菜(果)’生态农业技术集成与产业化示范"[黔科合重大专项字(2008)6011]
贵州省农业科学院博士基金项目"贵州‘猪-沼-粮
菜(果)’复合生态系统能值研究"
关键词
循环农业
能值评估
可持续发展
贵州
circular agriculture
energy analysis
sustainable development
Guizhou
