Study On The Spatial Optimization Path Of Urban Agglomeration From The Perspective Of Ecosystem

Urban agglomeration system includes both the original natural ecosystems and the artificially transform socio-economic system( urban construction space), as the natural ecological systems, urban agglomeration systems also have the similar process of formation, development and succession, which generally considered to be a complex ecosystem, clustering phenomenon in urban growth is the real mystery. Therefore, we can use a kind of analogy ecosystem approach to study the phenomenon of urban clusters, by comparing city’s status and role-playing in urban agglomerations systems to city’s ecological niche, by comparing ecological-material flow interaction based on the industrial chain to the function and nutrition relationships based on food chain in urban agglomeration, then opening a new perspective in urban agglomeration researching and exploring a new path to guiding urban agglomeration development.Different from the existing literature mostly focus on eco-city study, and less concerned about the overall level of the ecological status of urban agglomeration development, the paper will take urban agglomeration units which based on national development strategies as the object of study. The urban agglomeration is regarded as an ecosystem, borrowing the system and operating principles of the ecosystem, providing a new perspective for the analysis of the spatial structure, the interaction between the internal space and spatial evolution of urban agglomeration. Accordingly, operating mechanism of similar ecosystem is the internal logic, optimization of the spatial structure, the interaction between the internal space and spatial evolution direction is the starting point, providing a thinking for the optimization of urban agglomeration spatial.This thesis is multidisciplinary research integration which including Urban planning, Regional economics and Ecology, the main research method is an analogy(reason by analogy) method to take "problem posing- research summary- theory basis(rules of inference)- theoretical construction- empirical analysis" technology roadmap. Application of the analogy method is based on the starting point of "people-oriented", because urban agglomeration is a based on human-centered organic ecosystem growing by the carrier of natural ecosystems and bearing human activities; For the oneness and essentially identical between human and organisms, urban agglomeration systems as a form of human settlements and natural ecosystem as a form of natural organisms settlements to ensure the reliability analogy research from the " natural ecosystems " to " urban agglomeration systems".The paper is divided into seven parts:The first chapter is an introduction; second chapter is the theoretical basis and literature review article, to study urban agglomerations spatial structure by analogy methods, and commentary on research of domestic and foreign on urban agglomerations spatial organization and researching on the spatial organization of urban agglomerations from the perspective of similar to the ecological systems, etc.; The content of Chapter III is spatial organization of urban agglomerations from perspective of similar to ecological systems, which is divided into the ecosystem connotation, characteristics, structure, function and basic theory, urban agglomeration spatial structure from similar to ecosystems perspective, including its elements, organizational relationships, structure type, the formation process, etc., the essence and the principle of spatial crossfeed about urban agglomerations from perspective of similar to ecological systems, two subinteracting systems, urban agglomerations spatial succession performance, direction, essence, characteristics, dynamic mechanism, internal organization mechanisms from similar to ecological systems perspective, urban agglomerations space optimization mode and way from similar to ecological systems perspective; the content of Chapter IV is the Pearl River Delta urban agglomeration space structure from the similar to ecological systems perspective, including the basic situation of the Pearl River Delta urban agglomeration, the specific performance of socio-economic and ecological space, using a variety of mathematical analysis methods and means on researching, deconstruction from ecological niche, ecological flow, etc.; the content of Chapter V is the Pearl River Delta urban agglomeration space crossfeed and succession from the similar to ecological systems perspective, analyze and expound from natural ecosystems and socio-economic space, and comparative studies on the spatial variation of the Pearl River Delta urban agglomeration in three different periods; The the content of Chapter VI is the Pearl River Delta urban agglomeration space optimal path from the similar to ecological systems perspective, including three dimention: To smooth the ecological material flow circulation of the two subsystems; to promote socio-economic and ecological space of two subsystems; to promote the communication of the socioeconomic and ecological subsystems.Chapter VII is the conclusion.The core idea of urban agglomerations space research from the similar to ecological systems perspective is that: pursue balanced and coordinated development of urban agglomerations overall space, rather than polarization of the few cities; pursue rational use of various space and optimization of the resources allocation, rather than wanton exploitation and destruction some types of space resources; pursue cooperative and paragenesis co-prosperity development of urban agglomerations overall space, rather than the disorderly and vicious competition between cities. Pursue the performance of self-regulation, self-organization and self-adaption in urban agglomeration system, maintain a sustainable development of system, rather than actions taken for instant benefits or shortsighted behaviour such as " destroy first, recovery later", "pollute first, retreat later ", etc.