能值分析在农业生态系统中的应用——以山西省为例  

Energy analysis theory and its application in agro-ecosystem:A case of Shanxi

作　　者：王闰平[1,2] 荣湘民[1] 侯希红[2] 

机构地区：[1]湖南农业大学资源环境学院,湖南长沙410128 [2]山西农业大学经济贸易学院,山西太谷030801

出　　处：《湖南农业大学学报（自然科学版）》2009年第3期331-334,共4页Journal of Hunan Agricultural University(Natural Sciences)

基　　金：国家科技支撑计划项目(2006BAD05B10)

摘　　要：以山西省为例,运用能值分析方法对农业生态系统进行研究.结果表明:山西省农业生态系统仍然处于主要依赖人力有机能和环境资源的传统农业阶段;系统能值投资率为1.07,能值产出率为0.99,环境负载率为6.55.在农业结构调整方面,畜牧业取得了长足发展,而小杂粮、蔬菜和干鲜果的能值产出仍较小,远未成为优势产业;农业生态系统整体的回报效率较低,承受的压力较大.Analysis for structure and function of agro-ecosystem is very important for improving people＇s idea to protect agricultural environment and resource, and for agro-ecosystem research all over the word. With special advantage, energy analysis can evaluate complex ecosystem including natural, economy and society as a whole. In case of Shanxi agro-ecosystem, this paper expatiates on concept and theory of the energy analysis. The results showed that Shanxi agro-ecosystem still stayed in traditional agriculture period in 2005, which mainly depended on manpower and environmental resources. Energy investment ratio（EIR） in this region was 1.07, energy yield ratio（EYR） was 0.99, and environmental loading ratio（ELR） was 6.55. In the adjustment of the agricultural structure in the study area, stockbreeding had made great strides forward, however, sundry grain, vegetable and fruits still had smaller energy yield, and they were far from becoming dominant industry. The efficiency of the agro-ecosystem was lower and its environmental loading press was bigger.

关 键 词：能值分析 农业生态系统 指标体系 山西省 

分 类 号：Q14[生物学—生态学]