摘要
运用能值理论与分析方法,采用净能值产出率、环境负荷率、能值密度、人均能值用量、能值产投比及可持续性指数、系统稳定性指数及优势度指数等重要能值指标,对黑龙江垦区2002—2011年间农业生态经济系统的能值结构作了分析。结果表明:黑龙江垦区各项指标都维持在较高水平,工业辅助能投入大幅增加,农业生态系统的产能不断提高,垦区的经济发展水平和职工生活水平得到显著改善,但由此也产生了农业生态系统可持续性下降、种植结构不合理和能源利用效率低等问题,需要在今后的发展中亟待解决。
Based on the theories and analytical methods of emergy, and adopting the indices such as net energy yield ratio, environmental loading ratio, energy density, energy consumption per capita, production cost ratio, sustainability index, system stability index, and dominance index, an analysis was made on the emergy structure of agroecoeconomic system in the reclamation area of Heilongjiang in 2002-2011. In the study area, all the indices mentioned above were maintained at a high level, the investment in industrial auxiliary energy was increased substantially, the production capacity of agroecosystem was continued to enhance, and the economic development level and the workers' living standards were improved significantly. However, these improvements also induced the decline of agroecosystem sustainability, the irrational planting structure, and the low energy efficiency issues, which should be solved in the future development.
出处
《生态学杂志》
CAS
CSCD
北大核心
2013年第7期1723-1729,共7页
Chinese Journal of Ecology
基金
2008年度石河子大学高层次人才科研启动基金专项(RCZX200818)
黑龙江省教育厅课题"黑龙江省资源循环型新农村建设的对策研究"项目资助
关键词
能值分析
黑龙江垦区
农业生态经济系统
emergy analysis
Heilongjiang reclamation region
agro-ecoeconomic system.