Theory And Construction Of Ecological Riparian Zone In Shanghai

Currently the water environmental problems is become serious day by day. The main water environmental problem in Yangtze river valley is water pollution, soil and water loss and so on. With the requirement of the water landscape become more and more strong, degradation of the lake and river's ecosystem become a important reason of water environment depravation. Integrital ecosystem in the maintenance of the health of river ecosystems play an important role in riparian ecosystems, loss or degradation of river ecosystem degradation and deterioration of water quality an important factor. However riverside garden and landscape ecology of that does not mean, and the many rivers and lakes in Shanghai, ditch inlet aspect, therefore, of the Shanghai area of ecological riparian zone is necessary, is of great practical significance.The riparian ecosystem of quantitative evaluation is small, this gives the design of riparian ecosystem, improvement and protection of certain difficulties. Lack of uniform measurement standards, Not workable, Riparian zone caused the present one-sided and blind construction. To be able to build and improve the riparian zone to provide a unified measure of the need to strengthen the quantitative riparian ecosystem study In this paper, explore the riparian zone of the concept, content, function, impact indicators, types and evaluation models, Allow people to understand from a qualitative point of riparian zone, from a quantitative point of view to grasp the factors affecting riparian zone, riparian zone of ecological construction and design and construction standards to provide the theoretical basis. Thus meet the flood drainage requirements and ensure the structural stability of the slope, with the surrounding eco-systems (terrestrial ecosystems, water ecosystems, etc.) mutual harmonious, cooperative development, to maintain species diversity and maintain the material and energy cycle provide a rich food chain, the maintenance of plant and animal habitats, habitat quality, improve the living environment and the health of ecosystems.The paper has presented systematically study on theory and construction of ecosystem of riparian zone based on analysing and summarizing related internal and abroad research.Establishment of the riparian ecosystem assessment theory framework, and take ecological restoration in the Lingang new town city park of Shanghai as empirical study. Combination of theory of riparian ecosystem and practice of construction in Shanghai area.This article gives a comprehensive overview of the meaning of ecological riparian zone, and based on comprehensive survey riparian zone in Shanghai, through clustering analysis, the riparian zone in Shanghai is divided into 13 types.Respectively, described the character of riparian zone from the influencing factors, the current characteristics, vegetation community composition in Shanghai. In addition, because of the stability and sustainability of the riparian ecosystem, systematic assessed the outside the outer ring of Shanghai, between the inner ring and the outer ring and inside inner ring from the function, structure and habitat. Found the comprehensive assessment results show the riparian zone ecosystems majority is "good" state outside the outer ring, comprehensive evaluation value higher than 0.63; the comprehensive assessment results show the riparian ecosystem majority is "normal" state between inside inner roll and outside outer roll, comprehensive assessment value higher than 0.50; The assessment results show the riparian zone ecosystem majority is "worse" or "bad" state within the inner roll, in general, assessment grade is relatively low, comprehensive assessment value less than 0.50. And, this paper as riparian structure, soil, plant selection, water level change and slope as 5 elements of construction ecological riparian.Example for Lingang new town,analysis the 5 element,take ecological,and contrast the transformation before and after. Found after transformation the riparian zone ecosystem was superior transform before,the assessment of the ecosystem of riparian zone from under "normal" state become higher "good" state.