大田县林下经济林菌模式红菇项目能值评价

Energy Value Evaluation Analysis of Russula Underplanting Mode Project in Datian County

应用能值分析方法,通过能值转换率,将三明市大田县林下经济林菌(红菇)模式投入和产出的各类能量或物质转换为能值.绘制能值系统概图,编制能值分析表,选取7个能值指标建立能值评价指标体系,分析2011—2014年系统的输入结构、环境压力、经济效益与系统可持续发展能力.结果表明:该系统4年平均能值自给率为0.61,本地资源贡献高;环境负载率为0.85,对环境压力小;能值交换率为4.10,说明该系统在市场交易中获得真实效益高;系统可持续发展性能指数为6.10,系统单位环境压力下的社会经济效益较高,且可持续发展性好.

By use of the energy value analysis method and the energy value conversion ratio,the various energies and materials input and output involved in the Datian CountyRussula Underplanting Mode of the Sanming City were all converted to the unified standard--energy value.A generalized map for energy value system was drawn and the energy value analysis table is made.And seven energy value indicators were selected to establish the energy value evaluation system so that an analysis can be made of the system in aspects like the input structure,environmental pressures,economic efficiency and system capacity for sustainable development from 2011 to 2014.It was found that the system＇s four years＇ average energy self-sufficiency ratio（ESR）was 0.61,indicating a rather high local resource contribution degree;the environmental loading ratio（ELR）was 0.85,indicating a rather light pressure upon the environment;the environmental exchange ratio was 4.10,indicating that the system achieved a very high real benefit in market transactions;the energy index for sustainable development（EISD）was 6.10,the social and economic benefits were high and the sustainable development was good under the system per unit environment pressure.