| 城市化与生态环境协调发展的动态耦合模型及其在干旱区的应用 |
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| 引用本文： | 乔标,方创琳.城市化与生态环境协调发展的动态耦合模型及其在干旱区的应用[J].生态学报,2005,25(11):3003-3009. |
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| 作者姓名： | 乔标 方创琳 |
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| 作者单位： | 1. 中国科学院地理科学与资源研究所,北京,100101;中国科学院研究生院,中国,北京,100039
2. 中国科学院地理科学与资源研究所,北京,100101 |
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| 基金项目： | 国家自然科学基金重点资助项目(40335049)，国家自然科学基金资助项目(40471059)~~ |
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| 摘 要： | 在分析城市化进程与生态环境状况之间交互胁迫、动态演进关系的基础上,借助于系统科学理论建立了城市化与生态环境协调发展的动态耦合模型。认为整个城市化过程就是城市化的各个层面与生态环境的综合协调、交互胁迫的耦合发展过程。在这一过程中,城市化与生态环境协调发展系统的演化周期将经历低级协调共生、协调发展、极限发展和螺旋式上升4个阶段,城市化与生态环境协调发展耦合过程的实质,就是系统各要素相互作用、相互制约,由低级协调共生向高级协调发展的螺旋式上升的过程。以河西走廊为例,对干旱区城市化与生态环境协调发展的动态耦合规律进行了实证分析,认为1985~2003年间,河西走廊城市化水平不断提高,生态环境状况曲折下降,生态环境对城市化的响应较为明显,但相对于城市化进程,生态环境的响应又有一定的滞后性。目前河西走廊处于城市化与生态环境的协调发展阶段,然而协调耦合度的增长很快,整个协调发展系统即将进入极限发展阶段,生态环境危机正在进入潜伏期。基于动态耦合模型所建立的协调耦合度,能够较好地反映城市化与生态环境的交互胁迫、动态耦合的演变情况。根据河西走廊耦合度的变化可知,在城市化发展的初期,往往是需要一定的生态破坏为代价的,然而随着城市化的发展,生态环境必将随城市化而好转。因此,正确认识城市化与生态环境交互胁迫的动态耦合规律,采取适当的城市化发展模式,对于促进河西走廊城市化与生态环境的协调发展具有重大意义。
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| 关 键 词： | 城市化 生态环境 协调发展 耦合度 |
| 文章编号： | 1000-0933（2005）11-3003-07 |
| 收稿时间： | 03 6 2005 12:00AM |
| 修稿时间： | 2005-03-062005-06-16 |
The dynamic coupling model of the harmonious development between urbaniza-tion and eco-environment and its application in arid area |
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| QIAO Biao and FANG Chuanglin.The dynamic coupling model of the harmonious development between urbaniza-tion and eco-environment and its application in arid area[J].Acta Ecologica Sinica,2005,25(11):3003-3009. |
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| Authors: | QIAO Biao and FANG Chuanglin |
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| Affiliation: | 1. Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; 2. Graduate School of Chinese Academy of Sciences, Beijing 100039, China |
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| Abstract: | Through investigating the interactive coercing and dynamic evolving relation between urbanization and eco-environment,this paper utilizes system theory to set up a dynamic coupling model for the harmonious development between urbanization and eco-environment.We argue that the harmonious development system of the urbanization and eco-environment would go through four phases: rudimentary symbiotic phrase,harmonious developmental phrase,utmost increasing phrase and spiral type rising phrase.Throughout the four phrases,the elements of the system would influence each other,coerce each other,and complete the spiral type rising process from low-grade symbiosis to high-grade harmony together.Hexi Corridor,Gansu is taken as a case study in terms of arid area.The results show that the urbanization level in Hexi Corridor has increased gradually from 1985 to 2003 accompanied with the fluctuations of eco-environment state.The response of eco-environment to urbanization has been evident,but lagged behind the urbanization course.At present,the harmonious development system in Hexi Corridor was in its harmonious developmental phrase.However,the coupling degree has increased quickly and approached 90 yet,which is signaling that the system is about to enter the utmost increasing phrase,and the ecological crisis will enter the latent period.We have found that the coupling degree can well reflect the interactive coercing and dynamic evolving situation between urbanization and eco-environment in Hexi Corridor.From the temporal change of the coupling degree,it can be concluded that urbanization sometimes needs some cost of the breakages of the eco-environment in its initial stages,but as the urbanization continues,the state of the eco-environment would meliorate.It is crucial to recognize the dynamic coupling law between urbanization and eco-environment,and adopt the proper mode to realize the sustainable development of the urbanization in Hexi Corridor. |
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| Keywords: | urbanization eco-environment harmonious development coupling degree |
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