Landscape Evaluation And Optimization Design Of Green Plant Community In Universities Of Harbin

Campus life is an important stage in life,good school environment can provide students with a quiet,healthy growth of the space.Campus Green campus constitutes an important part of the ecosystem,the dual role of both ecological and landscape.Plant community as basic elements of the campus green,its internal plant species composition,structure and growth of the campus green space system jinqisuochang full landscape and ecological effects have a direct impact.This study on the analytic hierarchy process(AHP)community green space landscape evaluation in colleges and universities in cold regions,analysis of the existing problems,it puts forward some optimization strategies and research theory practice of optimized design.Select cold to represent the city of Harbin,the city of Harbin Engineering University,Harbin Medical University,Harbin University of Commerce(North Campus)and Northeast Agricultural University 4 abundance of plant species,there are 26 communities within the regional representation of the University landscape.Through field research on the species composition,community type,aesthetic and ecological benefits of representative indicators for investigation.Combined paper actual research situation,from community constitute,aesthetics value and ecological function three aspects selected has representative of index,using level analysis method building a landscape and ecological phase coordination,and qualitative and quantitative phase combined of community evaluation index system,established has by target layer 3 a guidelines layer,and 16 a basic index composition of Harbin City University green community landscape evaluation model on 26 a community landscape for evaluation,results showed that:(1)The comprehensive score of 26 community landscape plant landscape is not very high,the comprehensive evaluation scores between 5.00～9.10,the average value is 7.221.Among them,there were 10 communities mainly between 7.00～8.00,which accounted for 38.5%of the total plots;there were 6 communities over 8;there were 7 communities in 6.00～7.00;only 3 were less than 6.(2)The 26 communities in different community types in the landscape of the preferential ranking for plant communities:Arbor-shrub-grass type>Joe-grass type>Arbor-shrub type>shrub-grass type preferential ranking for plant communities of different vegetation types:broad mixed communities>deciduous broad-leaved mixed forest communities>deciduous shrub communities.In summary,the community for Joe grass-shrub-broadleaf mixed forest communities of highest overall score,and comprehensive landscape works best.(3)The 89%of 26 plant community landscape reach the standard of grade Ⅱ landscape,31%of plant communities,including community 20,community 19,community 10,community 9,community 22,community 23,community 21 and community 7 reach the standard of grade I landscape.On the whole,surveyed communities most rendered good landscape effect,but still a plant community landscape there is room for improvement.Based on the evaluation and analysis of College Green artificial plant community in Harbin,summarize existing vegetation landscape in colleges and universities in cold regions needs to be improved as follows:species combined lack of scientific rationality,species diversity is low;color monotone,seasonal landscape is not obvious;problems with the quality of tree species in the community,conservation and management needs to be professional.Landscape optimization strategies proposed to solve these problems is as follows:the scientific selection,focusing on species diversity;a reasonable,enrich communities in hue,seasonal change;long-term interests,enhance the level of maintenance and management.Finally,taking Northeast Agricultural University as an optimized sample site,put the theory into practice,selecting the plant community in different areas which need to be improved to analysis and optimization.