哈尔滨市农业生态系统能值分析

应用能值分析理论与方法对哈尔滨市农业生态系统2000—2009年的能值变化及可持续性动态进行了分析。结果表明:哈尔滨市农业生态系统总能值用量呈不断波动趋势，农业生态系统维持对不可更新工业辅助能的依赖性较大，环境负载率居国内较高，可持续性发展压力较大。未来农业生态系统管理要大力发展节水灌溉农业；应积极引进先进技术，增加劳动力的智力资源能值投入，调整工业辅助能投入，提高能值受益率；并探索建立多层次、高功能的生态农业模式。

Analysis on Energy of Agricultural Ecosystem in Harbin City

Energy change and sustainability dynamics of Harbin agricultural ecosystem from 2000 to 2009 were analyzed . The results showed that total energy use of agricultural ecosystem had the trend of constantly fluctuating. The agricultural ecosystem greatly depended on the un-renewable industrial auxiliary energy, moreover, the environmental load rate of Harbin was higher in China, and had big pressure on sustainable development. The direction of development on agricultural ecosystem in the future must focus on the development of water-saving irrigation agriculture; at the same time, the advanced technology must be introduced, and the input of intellectual resources should be increased. The government should adjust the investment of industrial auxiliary energy, and improve benefit response rate of energy; last but not least, explore and establish multi-level and high-function eco-agricultural model.