The system analysis is the key of what urban ecology study and was carried throng six step 城市生态系统的系统分析是城市生态学研究的核心，它共分六个步骤进行。
As human society being rapidly urbanized , the future of most landscapes is increasingly being determined by human activities 摘要城市景观是深受人类活动影响的景观类型，同时城市生态系统也深深地刻上了人类影响的烙印。
The focus of city building has changed from the pure beautiful natural environment to the all - round sustainable development of urban ecosystem 城市建设已由单纯的追求环境优美转向对城市生态系统的全面可持续发展的追求。
The main ideas of the four chapters are listed below : the first chapter theoretically analyses the urban ecosystem and its coordinated development research 全文共分五章。第一章重点对于城市生态系统及其协调发展研究进行理论解析。
The lack of green land in the downtown in particular , directly affects the healthy of the urban ecological system , which has led to , for example , an obvious heat island effect 城区特别是中心区绿地不足，直接影响了城市生态系统的良性循环，如城市热岛效应比较突出。
This paper summing - up the study on stability ecosystem and using the theory of dissipation structure defined the stability of urban ecosystem and the means to judging 本论文在总结前人生态系统稳定性研究的基础上，结合耗散结构理论给出了城市生态系统稳定性的概念和判别方法。
Evaluation result is that city ecosystem colligate index of zhengzhou is the tiptop in central plains city but is quite low compared with import ecosystem cities in our country 评价结果是：郑州市在中原城市群中虽城市生态系统综合指标值最高，但与国内重要生态城市相比差距很大。
According to city ecosystem evaluation standards set by professor song yongchang , passing 4 groups index and 43 items index , this text proceeded city ecosystem evaluation of zhengzhou 摘要以宋永昌教授设置的城市生态系统评价标准为依据，通过4组共43项指标对郑州市的城市生态系统进行了评价。
We should face these present issues , regard urban ecosystem as ingredient of the biosphere , take certain precautions , finally , realize the harmonious development between biodiversity conservation and urban ecosystem 本文从几个方面探讨了生物多样性保护与城市生态系统的关系及协调发展等问题。
This paper , based on the ecological theories , expounds the concept of urban ecosystem and approachs a subject of sustainable development from three angles : balance of ecosystem , symbiosis and the circulation resource 为此，以生态学理论为基础，阐述了城市生态系统的概念，并从系统的平衡、共生及资源循环利用三方面来探讨城市可持续发展的途径。
