| The significance of the establishment of regional green space lies not only in the expansion of green space,but also in proposing a comprehensive green infrastructure construction direction on a regional scale,and ultimately achieving the goal of optimizing the urban and rural human settlement environment.Through the landscape evaluation research of the regional green space plant community,the structural characteristics of the community and the landscape components are analyzed,and the relationship between the evaluation results and the landscape elements is studied,in order to improve the construction of the regional green space plant landscape.The research focuses on the three medium types of regional green underground in the southern foot of Daqing Mountain in Hohhot,namely: scenic recreation green space,ecological conservation green space,and plant communities in the regional facility protection green space.50 representative samples are selected from them.It is 20m×20m,and the survey content includes plant life forms,plant community types,plant community structure and community spatial morphology.Using scenic beauty estimation,comprehensive evaluation of the sample landscape through photos,and a comparative study of the best and best sample in the same spatial form,to explore the reasons for the difference in evaluation results.Later,through the multiple regression method,the relationship between the evaluation results and the landscape elements is studied.The main findings of this article are as follows:There are a total of 63 species of green space in the green plant community in the southern foot of the Daqing Mountain,including 31 species of trees,6 evergreen trees,25 deciduous trees,19 shrubs,1 evergreen shrubs,18 deciduous shrubs,and 13 kinds of herbaceous plants.There are 3 types of plant communities,13 deciduous broad-leaved forests,35 evergreen coniferous and deciduous broad-leaved mixed forests,and 2 shrubs and flower clusters.There are 5 types of spatial forms,23 semi-open spaces,10 covered spaces,8 vertical spaces,5 enclosed spaces,and 4 open spaces.In the plant community structure,most of the community level is arbor-shrub-grass type.Among them,the mean density of plants is 786,the average coverage is 41%,the relative height is 32%,and the leaf area index is 1.96㎡,the diversity is 1.33,the evenness is 0.73,the richness is 1.56,the monotony is 0.37,the angle scale is 0.50,the mixing degree is 0.42,and the size ratio is0.50.The plants in the community were randomly distributed,and the mixing degree and size ratio were in the middle.The landscape evaluation results of the green plant community in the southern foothills of Daqing Mountain show that the comprehensive landscape quality of the regional facility protection is poor,and the landscape comprehensive quality of the scenic recreational green space performs better.At the same time,aesthetic preference has a high correlation with overall restoration,and the overall restoration level of the community is affected by the aesthetic quality of the landscape.From the comparative study of the communities in the same spatial form,it can be seen that the trees are relatively healthy,the arbor-shrub combination is reasonable,the seasonal changes are relatively abundant,the naturalness is high,and the understory shrub and grass coverage is high and the neat and clean community is integrated.The evaluation is good.From the landscape model derived from quantitative and qualitative analysis.In quantitative factors,aesthetic preference is compared with overall restoration.Both emphasize the degree of vegetation coverage.The former emphasizes the ratio of community density and tree species,and the latter emphasizes the height of tree species.The comprehensive evaluation has the same influencing factors as the overall restoration.Among the qualitative factors,aesthetic preference is compared with overall restoration.Both emphasize green vision and naturalness.The former emphasizes privacy and distinctiveness,while the latter emphasizes seasonal changes and lawn quality.It can be seen that the quality of lawn is good or bad The overall recovery has an important impact. |
