绿色大学建设中的生态足迹

Ecological Footprint in Building Green University

生态足迹分析法是评价绿色大学建设水平最好的指标之一.生态足迹分析法有综合法和成分法2种.本文简要介绍了生态足迹成分法的基本原理和算法,并以东北大学为例将该方法应用大学校园的研究.结果表明,东北大学2003年的生态足迹为24787hm2,即需要约25000hm2的生态生产性土地支持学校的各类消费并吸纳所产生的废弃物.其生态效率(即单位生态生产性土地可支持的学生数)为0·94人·hm-2.生态足迹中,能源消费的足迹最大,占总足迹的2/3多;食物消费和固态垃圾次之,分别占总足迹的21·9%和5·7%.

Ecological footprint is one of the best indexes to evaluate the level of green university. The approaches of ecological footprint are made up of compound approach and component approach. This paper introduces the basic principle and algorithm of the componential approach of ecological footprint, taking Northeastern University as an example and using this approach in the research of campus. Result show that the ecological footprint of Northeastern University 2003 was 24 787hm^2, needing the productive land of ecology about 25 000hm^2 support all kinds of consumption of the school and absorb the offal. The ecological efficiency of the school was 0.94cap/hm^2.In the ecological footprints, the energy's footprints is the largest, it accounted for more than 2/3 of the total footprints, the next are food consumption and solid rubbish.