摘要
生态足迹模型通过一组基于土地面积的量化指标,测定现今人类为了维持自身生存而利用的生物生产性土地面积的量来评估人类对地球生态系统的影响,是一种用来衡量可持续发展程度的方法。论文基于对乐山市五通桥区生态足迹的测算,从供需平衡状况、供需结构等方面定量分析了五通桥区生态系统可持续发展的状况。结果表明:(1)2003年五通桥区人均生态赤字2.001hm2/人,人类活动对区域生态经济系统的影响己超出了其生态承载力,区域生态经济系统的结构和功能亟需调整;(2)五通桥区人均生态足迹的供需结构具有明显的不对称性,可用于人类消费的可供生态空间类型结构较为单一;(3)人均生态赤字的存在,进一步揭示了当前人地关系紧张的现状。
EF (ecological footprint) is a set of quantitative indicators based on land area. It is a measure of measuring sustainability, evaluating the effect of human activities on the global ecosystem by quantifying the biologically productive area necessary to maintain human survival. We used this model to estimate and interpret EF of Wutongqiao District of Leshan City in 2003. ased on the estimation, balance between supply and demand, the structure of supply and demand and the efficiency of biological resource usage are analyzed. The results show that (1) the EF deficit of Wutongqiao in 2003 was 2.001 hm2 per capita, which means that the local EF in terms of human activities had already exceeded the benchmark of the carrying capacity of the ecosystem Therefore, the structure and function of the local eco-economic system must be adjusted accordingly. (2)The structure of EF supply and demand of Wutongqiao was obviously asymmetric and the ecological space-types for human consumption were not diversified enough. (3) The presence of per capita ecological deficit revealed that the relationship between man and land was becoming increasingly intense.
出处
《西南农业大学学报（社会科学版）》
2005年第2期18-21,共4页
Journal of Southwest Agricultural University:Social Science Edition
