The Research Of Plant Landscape Evaluation In Dongguan Suburban Greenway

The research focuses on urban construction and ecological construction in Dongguan,in order to provide a rational way to establish the plant arrangement scientifically,and establish a artificial plant community with time structure,spatial structure and nutrition structure,to study how to provide a comfortable leisure space for people,and finding a more reasonable way to dispose the greenway plant community configuration in Dongguan suburban greenway.In this study,to achieve harmonious and unified in ecological benefit and landscape benefit in order to provide reliable basis and advice for ecological function of city greenway.Based on the detailed research of progress and development trends from the domestic and overseas,and consulting a great many references.Choosing three representative suburban greenway as the infested,respectively,Shipai wetland park,Dongguan ecological garden-Yanling wetland park and Songshanhu park.Using quadrat method to investigate sixty plant landscape units?100 square meters?.The main content of this investigation is the quantitative characteristics of every landscape trees,shrub,and ground layer.The investigation includes the kind,quantity?except the herbaceous plant?,average height,average diameter at breast height?just trees?,coverage and so on of the species.Using the AHP method and the SBE method to evaluate the investigative plants landscape synthetically.In addition,choosing the sunny day on the first mouth of the each season to measure the ecological factor of the three types greenway?ecological,urban,suburban?.For comparing the difference of the temperature,wind speed,environmental noise,the intensity of UV radiation,dust concentration and so on.The main results are as follows:?1?The field of the investigation includes 48 families,82 genera and 110 species of plants,among them,1 family,1 genera and 2 species of gymnosperm,47 families,81 genera and108 species of angiosperm.Lacking the adhibition of fern and gymnosperm.Plants flora of the genus areal belonging to 14 types,mostly tropical and tropical to subtropical distribution It accounts for 86.42 percent of all genus and adequately reflect the south subtropic characteristics that transition from tropical to subtropical,,but lack of special south subtropic plants.Applied Dongguan indigenous plant only has 25 families,30 genera and 39 species.Species of sample ineach kind of native species to species,more than 50percent of the is only 31.Most of them are introduction plant,and cover plant effciency is highest.?2?The plant mode in Dongguan suburban greenway mainly dominated by tree-bush-grass and tree-grass,it accounts for 76.67 percent of the total sample configuration mode.It has better ornamental feature and aspect change in plant community landscape.But in the spatial allocation,it lack of change and too single.?3?In the landscape evaluation,AHP method and SBE method are consistent in the evaluation result of the plant community landscape,but part of the evaluation result of the community is inconsistent.Only two of II-15 and II-16 reach the good landscape unit standards whose Y_AHP?7.50.The result shows the best configuration mode is tree?strain?,shrub?strain?,ground cover?lawn??square meter?,green area?square meter?,whose proportion is 5:10.5:78:100(On the 100 square metres of green space,which should design5 trees,10.5 shrubs and 78 square meters ground cover?lawn?.?4?The reason why temperature,wind speed and UV radiation are both higher than their ecological and urban greenway is the suburban greenway lacks of tall trees.Their greening mode and plant furnishing do little to denoise and dust.According to the research results,the paper also discuss the configuration suggestion about plant in suburban greenway.Pay attention to the rich plant species,and add indigenous plants,fern,gymnosperm and southland features plants reasonably and purposefully.On the one side,we should take a full account when we configuring and know about the scope of application and cultivation measures as far as possible about the detailed.On the other side,we should increase the configuration and make full use of the stereo space for community.In addition,we should strengthen maintenance management on the basis of the existing plant configuration.