The paper finds out the basic factors and specific properties of ecological balance in view of the elementary concepts and theories of ecology . the study is carried out with the systematic methods that regard the dwellings and their exterior environment - ecological system of city as a whole 本文从生态学的基本概念和理论入手，探讨生态平衡的基本条件和特性，并将住宅及其外部环境? ?城市生态系统作为一个整体，用系统的方法来研究，分析了两者的相互关系。
Jinzhou promotes greatly agricultural ecology construction by ecology views and system methods such as the theory of the living things symbiosis , the cycle and regeneration of material and energy , the cooperation of living and environment and soon in according to the feature of natural resource and environment in order to realize the organic combination of energy ecology and society 金州区按照自然资源和环境特点，运用生物共生原理、物质能量循环再生原理和生物环境协同原理等生态学观点和系统方法，全面推动金州农业的生态建设，以实现经济? ?生态? ?社会效益的有机结合。第四章对大连市城市生态系统协调发展进行定性与定量的综合分析。
It is a important site , where " city life " will converge and citizens can enjoy the open space ; furthermore it is a window , through which strange people start to form their recognition of the city . still more , it is a significant section of " city characteristic " ; city open space extends outward , and outer natural open space organicly stretches into the inner city . open space at the city gate is extremely active section in the city eco - system 城市门户开敞空间是“城市生活”的重要汇集处，是人们享受开敞空间的重要地点；它也是人们开始一个城市认知的形象窗口，更是构成城市空间的景观意象? ? “城市特色”的重要部分；同时它又是城市开敞空间的外延，且城市外边缘区的自然绿野在此有机地契入城市内部，是城市生态系统中极为活跃的结合点与重要生长点。
In this thesis which is guided by sustainable development and theory of system analysis , we analyzed the character of city biogeocenose and some problem in it at present , cognize city lawn is provided with ecological environment of beautify and virescence environment , adjust climate , fasten soil and preserve water , purify and monitor environment and so on 本文在可持续发展理论、城市生态学理论和系统分析理论的指导下，分析了目前城市生态系统的特征及存在的问题，认识到城市草坪具有美化绿化环境、调节气候、固土涵水、净化和监测环境等生态环境效应。
Meanwhile , the importance of different ecosystem services in urban areas is different . the function of fixing carbon and releasing oxygen is the most important , the function of conditioning climate is the second , and the functions of keeping waterhead , preserving soil , purifying environment , and restraining noises are the last important 同时，城市生态系统各生态服务功能的重要性，由大到小依次为固碳释氧功能调节气候功能涵养水源功能保持土壤功能净化空气功能与减弱噪声功能。
Research results on ecoenvironmental effect of urban gardens and greenbelts show that the gardens and greenbelts are the key components of urban ecosystem , and play an important role in maintaining ecological balance and improving ecoenvironment of the city , comparing to the other urban infrastructures 摘要对城市园林绿地生态环境效应的分析表明，城市园林绿地是城市生态系统的重要组成部分，在维持城市生态平衡和改善城市生态环境方面起着其他基拙设施所无法替代的作用。
This paper is emphasized to research the urban ecosystem health assessment approach , to suggest integrated assessment indexes system and to establish fuzzy assessment model . with guangzhou as example and beijing and shanghai as reference cities , and the ecosystem health situation of these three cities was assessed comparatively to clear about their restriction factors , so as to provide credible background situation and research basis for urban ecological planning 著重探讨城市生态系统健康评价方法，提出完整的评价指标体系，建立模糊评价模型；并以广州市为例，北京、上海为参比城市，对3城市的生态系统健康状况进行了比较评价，明确广州市的生态系统健康状况及其制约因子，为广州城市生态规划提供可靠的背景状况和研究依据。
The paper introduces the theory of health of urban ecosystem into the study of ecourban in connection of national ecourban building which is now in the ascendant , builds a health evaluation model of urban compound ecosystem according to related studies , using as the standard for judging the level of ecourban building ; decides the multi - index weight of the model by using the method of entropy right , avoiding a subjective judgment which might be caused by the method of subjective evaluation and ; applies the model into living examples of ecourban planning of nanyang city , describes the development level of each sub - system of nanyang city and other cities of henan province , the coordination level among each sub - system and the overall health statement of compound ecosystem in a quantitative way , providing scientific decision - making basis for ecourban building of nanyang city 摘要针对当前全国方兴未艾的生态城市建设，将城市生态系统健康理念引入生态城市研究当中，根据相关研究构建了城市复合生态系统健康评价模型，作为评判生态城市建设程度的标准；利用熵权法确定模型中的多指标权重，避免了采用主观赋值法可能带来的臆断性；将评价模型应用于南阳市生态城市规划实例中，以定量的方式描述了南阳市以及河南省其他城市各子系统的发展水平、子系统间的协调程度以及复合生态系统的整体健康状况，为南阳市生态城市建设提供了科学的决策依据。
This article systematically expounds the theoretical analytic model of the urban ecosystem and its coordinated development research by using the theoretical basis of urban ecology environmental material economics , urban economics , urban geography and urban planning . on the basis of these theories , the article analyses the urban ecosystem of dalian city in its structure character and also the interactive relation between the ecosystem and the development of the society with the method of integrating theory and practice and quantitative and qualitative 本文运用城市生态学、环境资源经济学、城市经济学、城市地理学、城市规划学等基本理论和观点，系统阐述了关于城市生态系统及其协调发展研究的理论分析范式；并依此为基础，利用理论与实证相结合、定性与定量相结合等研究方法，系统分析了大连市城市生态系统构成及其特征，以及生态环境与社会经济发展之间的相互作用关系。
This article takes a new point of view that the commercial street is a sub - system of the city eco - system which is similar to natural eco - system . the commercial street system has its sub - system too . this article scrutinized the relationships between these sub - systems 本文从城市生态系统的全新角度出发，研究作为城市生态系统子系统的商业街道系统的自然生态属性，并研究其子系统之间的关系；借鉴生态学和相关学科的方法，架构整合的商业街设计的目标系统和评价系统。
