摘要
为了弄清白银市的可持续发展现状,根据2000—2004年的统计资料,运用生态足迹模型对白银市的生态足迹、生态承载力和资源利用效率分别进行了动态分析,并与不同尺度区域进行了比较研究。结果表明:①五年平均生态足迹为1.55 hm2/人,年均增长率为4.76%;生态承载力变化不大,为0.55 hm2/人;平均生态赤字1.00 hm2/人,年均增长率为22.00%,处于一种相对不可持续的发展模式。②化石燃料用地和建筑用地占生态足迹的99.97%,主要通过消耗本地的自然资源来维持区域的发展;耕地供给对生态承载力贡献率为92.38%,供给类型比较单一。③2004年的万元GDP生态足迹为2.71 hm2,相当于中国西部的平均水平,资源利用模式为粗放型、消耗型。④生态足迹特点是:大生态足迹、低生态承载力、高生态赤字。
Based on the ecological footprint theory. Quantitative studies of per capita ecological footprint, per capita ecological capacity and resource utilization ratio of Baiyin city in lately five years are conducted in this paper. The results show ： ①The per capita ecological footprint is 1.55 hm^2, and the average rising ratio is 4.76%. The per ecological capacity is 0.55hm^2 and doesn＇t change evidently. The per capita ecological deficit is 1.00 hm^2, and the average growing ratio is 22.0%. At present, it is not a sustainable development model. ②The ratio of fossil energy land and the arable land to ecological footprint is 99.97% , and the high speed development is mainly at the cost of the local natural resources consumed. The ratio of the arable land to ecological capacity is 92.38% , so the stntcture is single. ③The ecological footprint of per ten thousand yuan GDP is 2.71 hm^2 equals to the average level of western China, and the present resource used model of Baiyin city is high consumption. ④The characteristics of ecological footprint in Baiyin city are big per capita ecological footprint, low per capita ecological capacity and high ecological deficit.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2007年第1期12-16,共5页
Journal of Arid Land Resources and Environment
关键词
生态足迹
生态承载力
生态赤字/盈余
生物生产性土地面积
白银市
动态分析
ecological footprint
ecological capacity
ecological deficit / remainder
biological productive land area
Baiyin city
dynamic analysis
