Study On The Adaptability Of Urban Spatial Morphology To Mountains And Rivers Environment In The Three Gorges Reservoir Area

As an open complex adaptive system,the cities and towns is always in dynamic development.The complexity of the urban spatial morphology comes from its interactive adaptation to the object environment.Compared with general cities and towns,cities and towns in the reservoir area are affected by mountains and rivers factors in the process of site selection,relocation,construction and development.The impact of constraints and environmental changes has become more prominent to the spatial morphology of cities and towns in the Three Gorges Reservoir area.Under the dual background of land and space planning and the construction of ecological civilization in the new era,how urban spatial expansion and morphological reconstruction can more actively adapt to the complex mountain and river environment has become an important issue for the sustainable and healthy development of the human settlement environment in the Three Gorges Reservoir area.Therefore,the research object of this paper focuses on the spatial morphology of the towns and cities in the Three Gorges Reservoir area,taking the complex mountains and rivers environment as the main object environment,starting from the basic cognition of adaptive representations and problems,and using coherent comprehensive research methods to establish The "two-way three-level" multi-dimensional adaptability theory framework of between urban spatial morphology and the environmental of mountains and rivers in the Three Gorges Reservoir area.Based on historical data and map image data,this paper analyzes the two-way interactive adaptation of urban spatial morphology and mountains and rivers environment in the Three Gorges Reservoir area of "simple→passive→active",The process follows the research paradigm of "abstract→concrete" and "general→special",clarifies the main adaptation relationships of "ecological + integrity + diversity" at different levels,concludes the law of interaction and the diversified spatial model of "mountain-river-city" between urban spatial morphology and the environmental of mountain and river in the Three Gorges Reservoir area,t is found that the life cycle of its cyclic growth is a double-loop adaptive structure.Therefore,The paper based on the geospatial data platform of the Three Gorges Reservoir area,used GIS and other technical methods,try to build a multi-level quantitative model and technology application path,and further conduct multi-scenario simulation and quantitative diagnosis of urban spatial morphology according to the theory of "adaptability creates complexity".In this way,it reveals the multi-dimensional and complex adaptation mechanism of the urban spatial morphology and the environmental of mountains and rivers in the reservoir area,and tries to propose different levels of adaptive planning paths,so as to establish the historical view and epistemology of the interactive adaptation of the urban spatial morphology and the environmental of mountains and rivers in the Three Gorges Reservoir area.It is hoped that through the regional exploration of "theoretical construction—temporal and spatial processes—adaptation laws—complex mechanisms—planning paths",it will provide new ideas and multi-dimensional perspectives for the research on the adaptability and complexity of urban spatial morphology,and promote the ―mountain—river—city‖ Sustainable and healthy development in the Three Gorges Reservoir area.The specific content includes the following four aspects:Constructed the "two-way three-level" multi-dimensional adaptability theoretical framework(chapters 1 and 2)of the urban spatial morphology and the environmental of mountains and rivers in the Three Gorges Reservoir area.It expounds the research background,realistic background and research trends at home and abroad.It focuses on the scientific question of "how to adapt to the complex mountains and rivers environment in the process of urban spatial expansion and morphological reconstruction in the Three Gorges Reservoir area",and is committed to analyzing adaptation law and mechanism of the spatial morphology and the environmental of mountains and rivers.Therefore,we tried to start from the comprehensive cognition of multi-dimensional adaptability representation and complex issues,explore the theoretical way out,and select theories of environmental adaptability,complex adaptability system,landscape ecology and other theories to intersect and cohere in a targeted manner,and clarify the cities and towns in the Three Gorges reservoir area.The connotation,ontology,elements and complex adaptation characteristics of the mountains and rivers environment adaptability of the spatial morphology;based on the inheritance and dissimilation of the "time-space" of the urban system of the reservoir area,the adaptation and symbiosis of the "mountains and rivers-spatial morphology ",clarify the space-time dimension and value dimension of the study;Using a coherent and comprehensive research method,with "adaptability" as the core and bridge,and "ecology + integrity + diversity + two-way equivalence" as the principle,establish a "two-way three-level" multi-dimensional adaptability theoretical framework for the urban spatial morphology and the environmental of mountains and rivers in the Three Gorges Reservoir area,in which "two-way" refers to the subject and object of environmental adaptability;"Three levels" refers to the interactive adaptation relationship between the urban spatial morphology and the environmental mountain and rivers at the macro,meso,and micro levels,and formed the logical route and cognitive system of this article.It reveals the spatial and temporal evolution process and multi-dimensional interactive adaptation laws of the urban spatial morphology and the environmental of mountains and rivers in the Three Gorges Reservoir area(Chapters 3 and 4).Based on the "two-way three-level" multi-dimensional adaptability theoretical framework,from"abstract" to "concrete",from "general" to "special",through the analysis of the Naive adaptation method,passive adaptation process and active adaptation state for urban spatial morphology and the environmental of mountains and rivers at different levels in the Three Gorges Reservoir area,refining the spiral two-way interactive adaptation process" between the mountains and rivers and urban spatial morphology,and put the"Study on the Adaptability of Mountains and rivers Environment of Urban Spatial morphology in the Three Gorges Reservoir Area" into specific spatiotemporal scenarios and special adaptation processes.Clarify the main adaptation relationships of "ecology+ integrity + diversity" at different spatial levels,reveal the DPSIR ecological interactive adaptation law of urban spatial morphology in the Three Gorges Reservoir area,and discover that the life cycle of symbiosis between urban spatial morphology and the environmental of mountains and rivers in the Three Gorges reservoir area is a double-loop adaptation structure,which extracts 2 types of "city-water" adaptation relationships,4 types of "city-mountain" function forms,and 8 types of"mountain-water-city" spatial patterns,and further explores multi-level adaptation.System composition of laws and complex mechanisms of action.Established a multi-level quantitative analysis technology path to further reveal the multi-dimensional and complex adaptation mechanism of the urban spatial morphology and the environmental of mountains and rivers in the Three Gorges Reservoir area(Chapter 5).Based on the geospatial data platform of the Three Gorges reservoir area and GIS and other technical methods,using CAS theory,establish a multi-level quantitative analysis technology path,select the quantifiable part of the interactive adaptation law,and deeply explore the complex adaptation mechanism of the urban spatial morphology of the Three Gorges reservoir area to the mountains and rivers environment: At the macro-regional level,the DPSIR model is improved to evaluate the ecological security pattern of the reservoir area,and the FLUS model and ANN-CA model are used to carry out multiple scenarios such as high ecological security level,overall planning scenarios,and low restriction conditions for urban spatial expansion in the reservoir area.Simulation reveals the ecological adaptation mechanism of urban spatial expansion and the "point-axis" structural system;at the meso-level town level,based on the quantitative diagnosis of the external representation,internal composition and complex structure of the town’s overall shape in the Three Gorges Reservoir area,it reveals urban spatial growth Structural adaptation mechanism to natural fractals;at the microscopic area level,three types of cluster growth patterns,land use and building height are fitted and quantified with the TPI index,and 6 dynamic adaptation modes and12 static adaptation modes are extracted.Put forward the multi-level adaptive planning path and strategy of the urban spatial morphology and the environmental of mountains and rivers in the Three Gorges Reservoir(Chapter 6).Looking back to the enlightenment of the previous research,from "cluster" to "town" to interpret the adaptive main structure of urban spatial morphology,from "town" to "region" to identify the regional "point-axis" system of urban spatial morphology,integrate and merge Refine the multi-scale adaptation model and CAS model system,follow the vertical guidance structure of the territorial spatial planning body,establish a multi-level planning path for the urban spatial morphology for the complex mountain and water environment in the Three Gorges Reservoir area from the perspective of adaptability,combined with practical cases,and based on the law of ecological interaction And adaptive mechanism,proposed the adaptive planning and governance path of "zoning control + boundary delineation";based on the holistic cyclic growth law and natural fractal adaptation mechanism,proposed the adaptive planning intervention path of "pattern optimization + structural shaping";based on diversity "Mountain-River-City" function form and adaptation model,and proposed the adaptive planning guidance path of "unit guidance + update and promotion",promoting the "mountain-river-city" spatial morphology in the Three Gorges Reservoir Area sustainable and healthy development.