Research On Plant Design In Constructed Wetland Consering Water Purification In North China

Constructed wetland is developed in the nineteenth century based on research of wetlands.Originally, constructed wetland is used as an effective alternative for traditional wastewatertreatment technology.It has the advantages of good treatment effect, low running cost, lessenergy consumption and so on, playing an important role in China’s water pollution controland water treatment etc..In addition to purify water, constructed wetland has other ecological functions,such asbiodiversity conservation, flood storage, groundwater recharge, maintain ecosystem balanceetc.In recent years, along with the deeper understanding of people of the constructed wetland,the landscape function of constructed wetland has gradually attracted people’s attention. Moreand more constructed wetlands are used in parks and residential landscape. This paperadvocates the combination of both purification function and landscape function of constructedwetland. It can not only solve the problem of water pollution, but also can beautify theenvironment. It’s a valid path of ecological civilization construction of our country.Wetland plants are an important part of constructed wetland, it plays an important role inthe process of water purification. Simultaneously, it is also an important element of wetlandplant landscape.The more suitable the plants arrangement is, the better effect of the landscapewill be. However, there are still some problems in the arrangement of constructed wetland, forexample, the functional structure of wetland plants arrangement is single, seasonal landscapeefficiency is poor, ignoring the wetland plant arrangement of the bank side and so on, affectingthe ecological functions and landscape effect. Further research is needed on the selection ofconstructed wetland plants and plant configuration mode, so as to improve the purificationeffect and ornamental value of constructed wetland.This research mainly consists of two aspects, one is the discussion of the plantarrangement mode of constructed wetland, the other is constructed wetland plant landscape design. We can combine with the purifying function and landscape function by this study. Inorder to supply foundation and guide with the plant arrangement of constructed wetland in thefuture.In the part of the plant arrangement mode discussion, we mainly study the communitystructure of the natural vegetation, on the basis of it, we rasied an plant arrangement mode ofcombining the the spatial scale and time scale. The constructed wetland plant arrangementshould also focus on aesthetic design.In the part of constructed wetland plant landscape design, we initiate the idea ofcombining with the constructed wetland water bodies and the bank side, when going with theplant arrangement. Following the art principles of plant landscape design, wetland plantlandscape design is divided into color and texture design. Due to the different position of theplant arrangement and thier characteristics, it elaborated the plant arrangement of the water,bank side island and beach.In the chapter of application, it mainly talked the constructed wetland project of ChineseAcademy of forestry. It will be built in the near future. In this area, plant arrangement is basedon natural vegetation structure. It selects the appropriate plants, and puts forward7kinds ofplant configuration mode and so as to build graceful seasonal landscape efficiency.