The Research On Investigation And Evaluation Of Plant Community Landscape In Shennong City,Zhuzhou

City Park known as the "city lungs",is the ideal of urban ecological environment regulator.Plant community is the basic unit of urban parks,but also is the important carrier of plant landscape construction,its quality decides the beautification function and ecological function.With the enhancement of people's aesthetic and ecological consciousness,they no longer meet the simple "greening",and make higher demand for the plant community landscape of landscape,ecology and recreation function.The survey research and evaluation research on the urban park plant community landscape are particularly important.Based on summarizing the research progress of plant community landscape survey and evaluation in urban parks at home and abroad and consulting a great many references of the plant landscape layout of Shennong City,The field investigation of 54 plant communities in Shennong City was carried out,and the landscape characteristics of Shennong City plant community were analyzed and summarized.And then the AHP—fuzzy comprehensive evaluation method was used to construct the urban community landscape evaluation system,and the landscape quality of 54 plant communities in Shennong City was evaluated by the evaluation method.Summed up the current problems about plant community landscape in Shennong City,in response to these issues to optimize the countermeasures.The specific results are listed as follow:1.There exists 182 plant species in 144 genera and 73 families in Shennong City,species of relatively less,the difference between plant species,distribution imbalance.To arbor,shrub,herb are based plants,aquatic plants relatively less,while the lowest proportion of vines.Woody plant evergreen tree species and deciduous tree species ratio of about 1:1,evergreen plant application is insufficient.Perennial herbs are far more than herbaceous plants.There is a relative lack of floating plants and submerged plants in aquatic plants.The proportion of native plants to exotic plants is 1:1.09,native plants application is insufficient,and the proportion of native plants in arboreous plants is higher than that of herbaceous plants.Investigated the higher frequency of arbor trees,shrubs,herbs,aquatic plants.2.Shennong City ornamental plants in the foliage plants and flower plants up,followed by fruit plants and view form plants,dried plants at least;Seasonal landscape is more significant and colorful,the main view flower color and leaf color,the main view flower color are red and White;Leafy summer,give priority to with white and purple blue flowers;mainly in the fall to the main foliage,view flowers and fruit plants also have a certain amount of performance;relatively few ornamental plants in winter,The main of view form plants and dried plants,less sense of flower plants and fruit plants.3.Shennong City plot plant community landscape,the structure of different levels,mainly to the structure composed of arbors,brushes and grasses,to the canopy of large jungle,moderate canopy forest,mainly to high coverage,no bare land and low coverage.4.AHP—fuzzy comprehensive evaluation method was used to construct the evaluation system of urban community landscape from landscape level,ecology level and recreation level.The system was used to evaluate the landscape quality of 54 plant communities in Shennong City,enriched the urban park plant landscape evaluation method.Among the 54 communities evaluated,there were 6 species of grade I,22 species of grade ?,21 species of grade ? plant species,5 samples of grade IV plant community,The quality of Shennong city plant community landscape is obove in the average level.However,the number of grade I plant communities is relatively less,and the construction and transformation of high quality plant community landscape should be strengthened.For different levels of typical sample area of community landscape from the level of community structure and landscape effect,etc are analyzed,to improve the level of the construction of plant community of shennong city to provide the reference.5.The optimization strategies of Shennong City plant community landscape:in the landscape level,through the rational distribution of plant seasonal landscape characteristics,the appropriate planting of winter view of dried plants,coordinated evergreen and deciduous plant ratio;ecological level through the rich species diversity,increase The application of native plants,plant cultivation design should be appropriate to the tree,to strengthen the plant conservation management and other aspects of optimization and improvement;recreation level by increasing the accessibility of plant landscape and can be stagnant,to create a higher security Of the plant landscape to optimize the improvement.