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应用能值生态足迹对传统的生态足迹方法进行改进,将可更新资源和社会生产消费中的能量流换算成对应的生物生产性土地面积。对本地生态足迹的计算方法进行了优化,即对消费账户进行了贸易修正。经过计算得出,北京市的可持续发展能力不断下降,其主要影响原因是化石能源的大量消费,北京市的资源利用效率不断在提高,但2009年有反弹趋势。
Applying the emergy ecological footprint to improve the traditional ecological footprint method, the energy flow in renewable resources and social production and consumption is converted into the corresponding bio-productive land area. The calculation of the local ecological footprint has been optimized by trading the consumer accounts. After calculation, the sustainable development capability of Beijing is declining continuously. The main reason for this is the massive consumption of fossil fuels. The utilization efficiency of resources in Beijing is constantly improving. However, there is a rebound tendency in 2009.