西安市城市化与生态环境动态关系分析  

Dynamic Analysis of the Relationship between Urbanization and Ecological Environment in Xi'an

作　　者：王新杰[1] 薛东前[1] 延军平[1] 周会粉[1] 

机构地区：[1]陕西师范大学旅游与环境学院,710062

出　　处：《地球与环境》2010年第1期43-48,共6页Earth and Environment

基　　金：国家自然科学基金"秦岭南北全球变化适应度评价及可持续发展模式选择"(40871052);教育部哲学社会科学研究重大课题攻关项目"西部经济发展与生态环境重建研究"(04JZD00010)

摘　　要：在全球环境变化背景下,对西安市近20多年的城市化与生态环境水平及其分量进行测度,利用协整检验、格兰杰因果检验、脉冲响应函数及方差分解模型,对城市化与生态环境关系进行动态分析。结果显示:研究期间,城市化与生态环境表现出了各自的发展特征,两者经历了同步发展到拮抗的演化过程;城市化发展与生态环境质量、生态环境响应之间互为格兰杰原因关系,而与生态环境压力存在单向的因果关系,与生态环境状态互不为格兰杰因果关系;生态环境综合质量指数和生态环境响应指数的波动一直受到自身及城市化发展的影响,城市化对生态环境响应的冲击作用要显著大于对生态环境综合指数的作用,且两者所受城市化的冲击都表现出逐期增强的态势。最后,针对两者的相互作用机制和目前存在的问题,提出了优化政策和建议。This paper explores the dynamic relationship between urbanization index and environmental indices on the background of global climate warmimg up from 1986-2006 in Xi＇an, by Integration Test ,Granger Causality Test , impulse-response function and variance decomposition model. The results showed that ： 1）the urbanization and eco-environment experienced a way from synchronous to antagonistic development , and their developmental characteristics are different, especially in the latest years;2） there are long-term relationships between the urbanization level and the eco-environment. Also the urbanization level is the Granger Causality for the comprehensive eco-environment quality and cco-environment response, but there is no relationship of Granger Causality between the urbanization level and the eco-environment state;3） environmental effects result from not only the urbanization process, but also include the ecological environment comprehensive quality . And urbanization has less positive impacts than negative ones; and 4） the impact of urbanization is much more outstanding on ecological response than on eco-environment quality , except that the impacts will be gradually intensified. Finally, some suggestions were advised accord- ing to their interaction mechanism.

关 键 词：全球变化 城市化 生态环境 动态关系 西安市 

分 类 号：X171[环境科学与工程—环境科学]