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陕西关中地区生态安全定量评价与动态分析
引用本文:任志远,黄青.陕西关中地区生态安全定量评价与动态分析[J].水土保持学报,2005,19(4):169-172.
作者姓名:任志远  黄青
作者单位:陕西师范大学,旅游与环境学院,陕西,西安,710062
基金项目:国家自然科学基金(项目号40371003),教育部重点项目(01158)
摘    要:利用生态足迹的理论与方法,对陕西关中渭河盆地,1986~2002年的生态足迹、生态承载力、生态盈余/亏损进行了测算。提出了生态压力指数的概念,建立了生态压力指数测算模型以及生态足迹、生态承载力、生态盈余及生态安全度变化预测模型,并对本地区万元GDP的生态足迹需求进行了测评。研究结果表明:①本地区生态承载力呈减少趋势;②生态足迹均呈现增加趋势;③1986~2002年生态压力指数从0.75增长为1.20,增长幅度为0.45,增长幅度较大;④关中盆地已严重超载,处于不安全状态;⑤本区平均万元GDP的生态足迹为3.11hm2,资源利用效率相对较高。

关 键 词:陕西关中  区域生态安全  动态变化  定量分析
文章编号:1009-2242(2005)04-0169-04
收稿时间:2004-10-29
修稿时间:2004-10-29

Quantitative Assessment and Dynamic Analysis of Ecological Safety in Guanzhong Region of Shaanxi Province
Ren ZhiYuan;Huang Qing.Quantitative Assessment and Dynamic Analysis of Ecological Safety in Guanzhong Region of Shaanxi Province[J].Journal of Soil and Water Conservation,2005,19(4):169-172.
Authors:Ren ZhiYuan;Huang Qing
Abstract:This paper calculated the ecological footprint,ecological carrying capacity,ecological surplus/loss in the Weihe basin of Guanzhong region in Shaanxi province during the period of 1986~2002, with the theory and method of the ecological footprint. In this paper, the concept of ecological pressure index was put forward, and two models were set up for calculating ecological pressure index as well as predicting ecological footprint, ecological carrying capacity, ecological surplus and ecological safety changing. At the same time it assessed the demand for ecological footprint for ten thousand yuan GDP of this area. The results of study indicated: (1)The ecological carrying capacity of this area showed a tendency of reduction.(2)The ecological footprint showed a tendency of increase. (3)The index of the ecological pressure increased from 0.75 to 1.20 from 1986 to 2001, and the increased range was 0.45 which was large comparatively.(4). Guanzhon region have already been overloaded heavily and developed in an unsafe state. (5)The ecological footprint for ten thousand yuan GDP was 3.11 hm~2, and the efficiency for utilizing resource was high relatively.
Keywords:Guanzhon region in Shaanxi province  regional ecological safety  dynamic change  quantitative analysis
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