Study On Ecological Optimization Design Of Urban Wetlandpark Based On Functional Wetland Theory

The wetland patch type urban park characterized by open water is not only of great significance to leisure and sightseeing,but also has an important impact on the water environment quality and ecological quality of the area.In recent years,the construction of Wetland Park in China has become an upsurge,and the problems in practice have also emerged,among which the problem of black and smelly water has a great impact,and it is difficult to cure,so it is urgent to study and solve.Quanzhou West Lake Park is an artificial restoration type urban park based on Lake wetland.In recent years,the phenomenon of black and smelly water in the park has repeatedly occurred,which has seriously affected the quality of sightseeing and leisure in the park.Relevant units improve the park environment by regularly pumping and flushing water,upstream sewage interception and other measures,but they can only temporarily alleviate part of the situation,and can not completely solve the problem of black and smelly water in the West Lake Park.Is a typical case,so as a sample of this study.In this paper,from a new perspective-using the theory of functional wetland to cut into this problem,we will analyze and study the problem of water body black odor in Quanzhou West Lake Park,put forward new thinking strategies and new solutions to the problem,restore and protect the ecological properties of wetland,and finally solve the problem of water body black odor in Quanzhou West Lake Park.The research content and conclusion of this paper are as follows:1.Causes and Countermeasures of black and smelly waterThe conventional point of view is that the root cause of the black odor of the water in the West Lake Park is the lack of sewage discharge and water power,so the strategy of sewage interception,water diversion and irrigation is put forward;and the root cause of the black odor of the water in the West Lake Park is the decline of the wetland ecological attribute of the relevant watershed as the wetland patch.Therefore,this paper proposes that only by systematically restoring the wetland properties,can we truly solve the problem of black and odorous water.2.The solution and scheme of black odor in water bodyAccording to the above analysis and strategies,combined with the theory of functional wetland,this paper proposes to sort out,restore and reconstruct the landscape ecological advantage pattern of patch corridor matrix in the relevant watershed of the West Lake at the macro,meso and micro levels,so as to completely restore the wetland ownership of the water body and relevant areas of the West Lake.Form a set of operable mode to solve the problem of black and smelly water in Urban Wetland Park.3.Solution and model of water body black odorAt the macro level,the wetland network restoration model is proposed.At the meso level,the wetland patch optimization model is proposed,and the increase of hydrodynamic force is included as an auxiliary measure.The effect is verified by computer simulation.At the micro level,the wetland substrate construction mode is proposed to ensure the principle of ecological priority,and to take into account the park's landscape and recreational functions.The conclusion of this paper not only has the pertinence to the black and smelly problem of the water body in the West Lake Park,but also has the reference significance to other city park related problems.From the perspective of prevention,it has the reference value to the planning and construction of all city wetland parks.The deficiency of this study lies in the limitation of time and energy.It focuses on one case of West Lake Park,and its depth and breadth are also insufficient.At the same time,the solutions and models are lack of direct engineering practice verification,only indirectly supported by software simulation results and cases.