Study On Urban Green Skyline Planning Based On Analysis Of Landscape Ecology

With the advance of industrialization process, and the Geo-human interaction, cities have gradually become the centrepoint of population settlement. The so-formed urban settlements have transformed the way of the interactions within the Eco-System. Under the current trend of accelerated urbanization and population concentration, urban eco-systems are now facing mounting pressure, leading to deterioration of the eco-system, and destruction of surface land and soil pollution, degradation of air and water quality, and damage to bio-diversity, all of which pose threat to the human life and development. This developing trend of the eco-system has led to studies focused on Environment, Urban planning and management. The other indication of environmental change assumes the form of Bio-Structure and evolvement, under the influence of human action, our eco-system has been stretched under pressure almost to the limit of its tolerance, which inturn brings negative effects on eco-diversity, and the entire eco-system. Therefore, the need for protection and planning of urban eco-system has become more pressing, prompting a scientific approach to lead the planning and development of urban eco-system.Skyline planning is at the forefront of urban planning direction, it has been the centre of multiple discipline studies. Skylines are the most important indications of urban outlines, also the urban environment distribution. The formation and the evolution of skyline landscape is the direct result of urban development, and based its transformation on urban environment, and has been the benchmark of eco stability, and affects to a considerable degree the urban environment. The traditional skyline planning is mostly based on isolated psychological and landscape analysis, disconnecting the natural bond between skyline and urban environment, making it impossible to represent the interactions between environment and landscape ecology, and in such studies discriminated methods have been applied for analysis of skyline features, leading to irrational definition of skyline planning, limiting the substantial application of such planning,In this paper, in combination of theoretical Skyline studies and planning for Nan’an City skyline riverside regional planning for the evidence, the theory of landscape ecology, fractal theory, coordinate the relationship between people and land to address urban environmental sustainability concept based on the theory of quantification by landscape ecology pattern index analysis, landscape ecology land suitability evaluation, quantification and evaluation methods skyline fractal characteristics of the integrated use of ARCGIS, landscape indices calculation software FRAGSTATS, fractal dimension calculation software FRACTALYSE such as spatial statistics and analytical tools to assess the urban landscape ecology pattern characteristics and trends, assess the impact of landscape ecological factors on the skyline of land suitability evaluation fractal feature of the city skyline. Based on the evaluation results establish skyline height control zoning plan proposed skyline linear control objectives and strategies, and improve the skyline landscape ecological protection and construction planning guide policy.Main research and conclusions:(1) Urban Skyline key factors and structural analysisSkyline factors are an integral part of the skyline landscape, their connections have resulted in varying special formations. Through factor analysis to identify the skyline elements into natural elements, artificial elements, visual elements of three basic types. Due to spatial variation of various elements, or because of different combinations to form differentiated skyline. Skyline as a landscape, visual contact is inseparable from the main object of the landscape elements and their relationships. From the visual hierarchy analysis, the city skyline in the depth direction constitute contain prospects, middle ground and background three levels. Through the relationship between elements of the skyline, hierarchy, hierarchy between the analysis, planning skyline-level principles to be followed, the combination of dynamic and static principle, the principle of coordination principles and personality. Meanwhile the relationship between urban and environmental analysis by identifying skyline major environmental factors, analyze terrain slope, terrain wind, earthquake fault zones, distance from shore, quality and other environmental impacts of vegetation cover factor on the city skyline views.(2) Urban landscape ecological pattern analysisFrom the analysis of landscape ecology concepts elaborated starting combing the main theoretical models and methods of analysis of landscape ecology, landscape indices to select the number of analytical methods, and use FRAGSTATS4.2integrated system landscape pattern calculation tools, from the landscape (Landscape level) level, plaque type (Class level) level of Nan’an city landscape pattern quantify obtain basic information on the status and changes in urban landscape ecological pattern in order to quantify the results of the analysis area and density of the urban landscape, shape, concentration and diversity of characteristics and trends analysis of landscape pattern and trend of the main features of the urban landscape ecological types, and assess the impact of changes in the urban landscape pattern and their area of riverside skyline planning.(3) Landscape ecological suitability assessment skyline landLandscape ecology land suitability assessment is carried out fundamental basis skyline height control division. This chapter from the evaluation based on the evaluation levels and content, evaluation of ecological landscape design principle of land suitability evaluation overall framework to identify the major environmental factors the city skyline, the establishment of evaluation index system on the basis of factors identified for initial evaluation grade assignment, respectively, depending on the Gallery and sight, terrain slope, distance from shore, the terrain wind zone, away from the earthquake fault zone six indicators, vegetation cover quality single factor evaluation, assessment factors and to establish conditions for the level of assessment of land-based single-factor suitability regionalization, evaluation factors and spatial distribution characteristics. After the completion of the single factor index evaluation, combined index score and weight assignment of land-based units ARCGIS grid partitioning scheme, to carry out a comprehensive evaluation of the suitability of land for ecological landscape, skyline assess the overall suitability of land for construction, according to the evaluation scores, the study Landscape ecological suitability of land area is divided into appropriate, more appropriate inappropriate and unsuitable four fundamental to establish the suitability of land for a comprehensive zoning scheme based on landscape ecology grid. Evaluation of landscape ecology and distribution of suitability of land for construction skyline based on the results.(4) Quantification and evaluation into fractal characteristics in skylineThis chapter examines the fractal theory and fractal dimension skyline quantitative method introduces linear analysis, analysis of fractal characteristics of the city skyline, quantitative skyline space form fractal characteristics. Using box-counting method, the city skyline fractal dimension, partially higher awareness of the city skyline and abroad fractal dimension analysis of urban type, size and dimension of the relationship between the skyline based on the results, summarized city skyline line of general law fractal dimension. The study area were calculated skyline building structures, natural body (mountain) fractal dimension skyline, integrated access to the fractal characteristics of the study area’s skyline. Combined with the city skyline in general law by fractal dimension, fractal dimension, fractal characteristics evaluation of the status area of the city skyline in the study area.Green skyline height and outline controlSkyline is the city’s landscape spatial form, height and linear control is a fundamental goal skyline planning. This chapter examines the skyline based on ecological pattern analysis, the empirical results skyline landscape ecological land suitability evaluation, fractal characteristics skyline quantification and evaluation. Based on landscape ecological land suitability assessment, the establishment of a high degree of control regionalization skyline, the study area is divided into key construction area skyline height, suitable construction area, construction area and the limited moratorium on building area, land suitability for landscape ecological characteristics of the district, carried skyline planning position, height and project access control; based on fractal characteristics of the city skyline evaluation, establish skyline linear control strategy. In urban ecological landscape assessment is based on pattern characteristics, from diverse landscape protection and planning constraints skyline, landscape and maintain the concentration degree of planning guidance skyline, landscape area and shape pattern index change and Skyline planning guidance in three areas proposed antenna plan guide policy. Skyline linear dimension to the quantitative assessment as the basis to determine the fractal dimension skyline control objectives1.130, and should strengthen the control of linear ridges establish skyline dynamic programming and fractal monitoring mechanism.Innovations:(1)Theoretical InnovationCity skyline as landscape resources into urban planning issues rise even more scarce in the near abroad, the theoretical system and practices still in the process of building, less domestic systems research, planning studies conducted skyline analysis from the perspective of landscape ecology literature. This paper reviews the theoretical and research-based skyline planning to expand theoretical vision skyline planning studies, attempts to establish contains planning objectives, planning principles, theoretical framework research model, the initial construction of the city skyline green planning theory, become environmental science, earth information new science and urban planning point of integration theory.(2) Method InnovationCarry the new application techniques, methods to the city skyline planning and build a green city skyline planning methodology. In the urban landscape pattern analysis skyline land suitability evaluation, Skyline fractal quantification and evaluation of, the combination of ARCGIS and Auto CAD spatial processing and analysis tools, FRAGSTATS landscape pattern of statistical tools, FRACTALYSE fractal dimension calculation tools, the use of box fractal methods dimension, landscape indices and GIS spatial statistics, and analysis, planning practice green skyline introduce efficient and viable application methods and techniques.(3) Practice InnovationTake an empirical approach to quantitative planning in area studied, spatial zoning plan and control targets green skyline plan to solve the traditional theory of urban planning and design in the environment, ecology and design control is difficult to accurately quantify the prevalence of the target, targeted planning indicators shortage. Riverside City skyline establish a green plan empirical paradigm to determine Nanan City skyline Riverside green land zoning scheme based on a grid cell sites, providing solutions for the government to implement urban management.