A Study Of Ecologically Oriented Planning For River Landscape

As important resources and environmental vectors, the rivers concern the cities'existence, safety, and development. In recent years, with the booming urbanization, the conflicts between economy development and river eco-environmental protection have become increasingly sharpen. With this background, the realization of the sustainable development of the river eco-environment has become an important world issue of common concern. Based on the river landscape planning studies, there are a large number of research theories about river eco-environment construction, water quality control and protection, and ecosystem restoration. Through in-depth investigation and extensive literature research, it is found that most studies about the river landscape planning are qualitative, and few of them are quantitative. And these studies are mainly about the design of the human needs for river eco-environment, restoration of water eco-environmental engineering, technical control and so on; however, there are few studies on promotion of the economic development to the river eco-environment and supporting of the eco-environment to the urban economy, as well as how to realize the balance between the two issues mentioned above. And systematic, ecological and developmental river landscape planning and design methods are in shortage.This paper aims to integrate the theoretical knowledge of ecological systems theory, overall in-depth ecological view, landscape ecological theory, sustainable development theory and other theories. By referring to the research results of home and abroad, a sustainable development direction of the regional ecological environment in the river landscape planning is carried out. It is a comprehensive study of ecological safety, pollution control, and river landscape ecological patterns. It also combines the quantitative evaluation methods of appropriate regional eco-environmental quality evaluation methods, water pollution assessment, and landscape indices qualitative evaluation, providing the technical basis for reaching the goals of river ecological landscape planning.The innovations of this paper are as follows:First, it is macro-oriented by regional ecological environment evaluation to expand the research-scale of the river landscape planning. The river landscape becomes a regional eco-environment factor in the macro-scale. Through the regional ecological environment evaluation, the interactions between the factor of river landscape and other regional factors are evaluated. Ecological function zonings are formed based on regional eco-environment and ecological analysis of river pollution control. It expands the scale of the river landscape planning and enriches the regional eco-environmental function zoning implications.Second, based on the evaluation of regional ecological environment functional zoning, it proposes research methods of ecological control and policy of landscape planning. Based on the quantitative research of regional eco-environment sustainable analysis evaluation and regional river pollution control analysis, combining the eco-system types and eco-service functions to do the regional eco-environmental function zoning, it proposes key ecological control research methods of river landscape planning in the regional scale. The direction of the river landscape planning's ecological control guides the strategy research direction of river landscape planning in different ecological functional zonings. Strategy research can direct river landscape ecology guided key strategy content research based on environment's merits of different ecological functional zongings.Third, it does strategy research of the river landscape sensitive area's ecological safety planning by using digital elevation three-dimensional model. The ecological safety analysis research of river landscape development does quantitative analysis and evaluation of the assessment factors'validity and relevance such as its terrain slope, convergence and so on, by using component-based GIS technology to build digital elevation models and hydrological analysis models. The evaluation results have important guiding significance to both the control measures of riparian zone-dimensional geological hazards and the safety planning of threat range, safe avoidance range as well as ecological range in the construction site. The planning strategies develop from the traditional two-dimensional analysis to safety planning strategies of the river landscape area development based on three-dimensional topography and hydrology spatial analysis. The three-dimensional analysis of planning has three-dimensional features and characteristics of ecological environment's sustainable development. The key strength of ecologically sensitive land and the buffer should be maintained. The river landscape analysis, based on considerations of ecological safety, will make greater promotion of the development of the river ecological land's sustainable usage, with the introduction of GIS technology and the deduction. This application will become more widespread.Forth, it, combining with the case of eco-industrial economic growth direction, the government needs and public participation, does strategy research of the river pollution control and conversational restoration in the development of river landscape planning's ecological industry, focusing on the eco-environmental functional zonings'eco-economy controlled zones. At the same time, it stressed the governance engineering technologies of water environment, analysis the river ecological restoration technologies as well as corresponding practical project cases for references and choices.Fifth, it does research about the urban river landscape pattern planning based on the landscape ecology principles and quantitative analysis of landscape pattern indices. First and foremost, it does topology analysis of the overall river corridor spatial patterns, proposes analysis research methods of the river corridors'network special characteristics based on the landscape ecology principles and corresponding ecological optimization strategies. Besides, by using the GIS software and landscape pattern analysis software FRAGSTATS, it turns the image data containing geographic information into the data needed by river landscape indices calculating. It tries to do research of the landscape pattern indices'levels of ecological plaque and type plaque. It proposes the river landscape ecological optimization strategies by landscape pattern indices'ecological Characterization sensitivity and correlation analysis of landscape pattern indices and ecological effects. Finally, it obtains that the river landscape ecology optimization strategies are the ecological design-oriented basis of river landscape planning through quantitative analysis.