| This paper takes native plants and their communities in Shenyang gardens as the research object,investigates the germplasm resources of native plants and their communities in landscaping in Shenyang gardens in the field,and evaluates and analyzes the native plants and their native plant communities in urban gardens in Shenyang city by using hierarchical analysis(AHP)and beauty degree evaluation(SBE)method.The results of the study improved the landscape material configuration system of garden plants in Shenyang city and explored the way of plant community landscape allocation with mainly native plants.The research results of the thesis are as follows.(1)There are a total of 56 families,109 genera and 203 species(excluding ferns)of native plants for gardens in Shenyang City,and the List of Native Plants for Gardens in Shenyang City and the Application List of Native Plants for Gardens in Shenyang City were compiled and prepared.The dominant families,in order,are Rosaceae,salicaceae,Leguminosae,Caprifoliaceae and Oleaceae.The results of diversity analysis were Park Native Plant Diversity > Residential Native Plant Diversity > Road Native Plant Diversity.(2)Using the analytic hierarchy process to score 203 kinds of native plants,there are 143 kinds of grade I,64 kinds of trees,5 kinds of shrubs or small trees,41 kinds of shrubs,and 33 kinds of ground cover herbs.It has the highest comprehensive value and can be used as the main selection material for plant community landscape;there are 47 kinds of grade II,18 kinds of trees,7 kinds of shrubs or small trees,8 kinds of shrubs,and 14 kinds of ground cover herbs.The comprehensive value of plants is high,and it is used as an auxiliary selection material for plant community landscape;there are 13 kinds of grade III,5 kinds of trees,1kind of shrubs or small trees,4 kinds of shrubs,and 3 kinds of grass cover.The comprehensive value of some plants is average,and they can be used as substitute seedlings for zonal landscapes.(3)Based on the results of comprehensive assessment of native vegetation in Shenyang city parks and comprehensive scoring values,15 kinds of urban dominant native tree species were recommended for Shenyang city gardens,including 4 keystone species and 11 backbone species;73 kinds of native tree species for different seasonal landscapes,including 21 kinds in spring,15 kinds in summer,27 kinds in autumn and 10 kinds in winter;186 kinds of native tree species for different urban green space applications,including Among them,11 species were used in park green areas,37 species in road green areas and 38 species in residential green areas.(4)To establish a mathematical evaluation model of plant community landscape:Y=0.6296+0.202C2+0.145C3-0.203C4-0.149C7(R~2=0.29),and it is concluded that the public likes the plant community landscape as follows: the richer the community color or the brighter the community landscape,the more complete or richer the community level results,the better the plant growth condition,the more vigorous the growth attitude,the more plant species in the community,the more The more complete or rich the community level,the better the plant growth,the more vigorous the growth attitude,the more plant species in the community,the more likely to be loved and the higher the beauty rating.Based on the above factors,the three community combinations with the highest and lowest ratings among the three green space types were selected and suggestions were made to update the native plant communities with the lowest ratings. |
