张掖市2005年生态足迹分析

运用生态足迹模型对张掖市2005年的生态足迹和生态承载力进行了分析,结果表明:张掖市耕地和草地的生态足迹比重最大,说明该市的生态供给过分依赖于耕地和草地;张掖市2005年人均生态足迹为2.39 hm2,人均承载力为1.38 hm2,人均生态赤字为0.82 hm2,人均生态足迹的供给与需求之比为1∶1.72,总人口生态赤字为1 049 090 hm2,表明张掖市生态系统的压力和强度甚高,在区域尺度上处于不可持续发展状态.在此基础上,对张掖市的生态可持续发展进行了评价,并提出解决对策.

Analysis of ecological footprint of Zhangye City in 2005

The ecological footprint(EF) and ecological carrying capacity of Zhangye City in 2005 were calculated and analyzed in this paper by using the ecological footprint model.The results showed that both cultivated land and grassland occupied the highest proportion in the total ecological footprint of Zhangye City,indicating that ecological supply of the city was over depended on cultivated land and grassland;the ecological footprint demand and the ecological capacity per capita were 2.39 hm2 per capita and 1.38 hm2 per capita respectively in Zhangye City in this year,and the ecological deficit was 0.82 hm2 per capita;the ratio of supply to demand per capita in ecological footprint was as 1∶1.72;the ecological deficit of total populaton was 1 049 090 hm2,indicating that the ecosystem of the city was beared very high ecological pressure and strength and presented a unsustainable state in regional scale.The sustainable development capacity of Zhangye City was evaluated and some relevant measures were proposed.