基于生态足迹理论的银川市生态安全评价  

Assessing the ecological safety of Yinchuan based on theory of ecological footprint

作　　者：任贤[1] 张磊[1] 王洋[1] 赵海霞[1] 

机构地区：[1]北方民族大学生物科学与工程学院,宁夏银川750021

出　　处：《广东农业科学》2010年第6期207-210,共4页Guangdong Agricultural Sciences

基　　金：宁夏自然科学基金(NZ0842)

摘　　要：生态足迹方法目前被广泛地应用于区域生态安全的研究,通过生态足迹方法对银川市1992—2007年的人均生态足迹、生态承载力、生态赤字以及生态安全情况进行分析并获得了随时间变化的预测模型。结果表明:银川市15年间人均生态足迹增长了94.06%,人均生态承载力减少率为33.70%;生态压力指数由2.1887升至6.4114,增长了1.93倍,其中1992—2002年的生态压力指数大幅度上涨,2002—2007年趋于缓和,但15年间生态安全等级始终为Ⅳ级,处于极不安全状态。It is very popular of using ecological footprint method on ecological safety study at present. This article was based on the way of ecological footprint to analysis ecological safety on Yinchuan, which included per capita ecological footprint, ecological capacity, ecological deficit and ecological safety during 1992—2007 and obtains time-varying prediction model. The result showed that the ecological footprint of Yinchuan increased by 94.06 percent in the past 15 years, while the rate of reduction about per capita ecological capacity was only increased 33.70 percent. Ecological pressure index of Yinchuan was from 2.1887 to 6.4114, which increased 1.93 times. It rose rapidly during 1992—2002, which went up gradually from 2002 to 2007.During 15 years, the security degree of ecology system belonged to Ⅳ degree, and it was a worsening state.

关 键 词：银川市 生态足迹理论 生态安全 评价分析 

分 类 号：X171.1[环境科学与工程—环境科学]