| It aims to systematically investigate and study the current status of the plant resources and landscape of the park,with a view to comprehensively improving and replacing the scientific basis.Based on the analysis of the plant community resources and diversity in Bao’an Park,the analytic hierarchy process was used to evaluate the plant community landscape in the park.The results are as follows:1.Survey results of plant landscapes in Bbao’an Park: There are 424 species of 317 genera and 130 families in the park.Arbor: irrigation: grass: vine ratio is 1: 1.06: 0.65: 0.18,shrubs are the most,vines are the least,evergreen to deciduous ratio is 4.72: 1.The dominant families are Euphorbiaceae,Leguminosae,Asteraceae and Gramineae,Ficus,Hibiscus and Polygonum are the dominant genera;There are 94 native tree species,330 species of exotic plants;foliage plants in the park accounted for 58.73%,flower-seeding plants accounted for 83.73%,fruit-seeding plants accounted for 19.10%,dried plants accounted for 12.26%;plant communities have various types,including arborshrub-grass,arbor-shrub,arbor-grass,Irrigation-Grass and Wetlands.Among them,arbor-shrub-grass is the dominant plant community.Park plant landscape elements complement each other with terrain,park roads,water bodies,and landscape sketches,complementing each other,and becoming one of the most popular comprehensive parks among the public.2.Analysis of plant community diversity in Bao’an Park: The overall trend of diversity indicators at various levels of the community is: tree layer> shrub layer> herb layer.From the trend of the 52 plant community diversity analysis curves,the basic trends reflected by the species richness,diversity index and evenness index of the same community are the same.For the communities with high richness index and evenness index,the diversity index is also high;from the average of the richness index,diversity index and evenness index of various scenic spots,the first place is the Lanxiang Yougu Scenic Area,which has obvious plant community levels,rich species and high uniformity.The diversity index is lower than that of Shenzhen-level and district-level comprehensive parks;the evenness index is lower than that of Shenzhen-level parks and slightly higher than that of district-level comprehensive parks.3.Landscape evaluation of plant communities in Bbao’an Park: AHP was used to construct a landscape evaluation system.Based on the determination of 4 criterion layers and 22 factor layers,a comprehensive evaluation of the landscape of 52 plant community plots resulted in: I.II,III,IV-and IV-level landscapes were 3,18,26 and 5,accounting for 5.76%,34.62%,50% and 9.62%.Overall,the CEI rating is greater than 50% of a total of 41,accounting for 78.85 percent,indicating that Bao’an Park plant landscape in the middle of the upper level,the overall park landscape effect is good,Parks with a high plant diversity index also have higher landscape quality scores.The analysis of typical plots of different landscape quality grades shows that: the high-quality plant landscapes rated Ⅰ and Ⅱ have the following characteristics:(1)The plant species are abundant and the overall growth is good;(2)Ornamental features is various and ornamental value is high;(3)The community structure is rich in layers and has high ecological value;(4)The community can meet the needs of tourists to visit,watch and rest;(5)The species richness and plant diversity of the community are higher.In summary,the plant landscape in Bbao’an Park is better,but there are also the following problems: the quality of the plant community is well-doped,and the differences between the attractions are obvious;the spatial structure and construction form of some plant communities are limited;The characteristics of mountain landscape plant communities are not obvious,lacking planning and maintenance;some waterfront landscapes are cold and stiff,lacking vitality.It is suggested that Bbao’an Park should strengthen the construction of high-quality landscapes in the future construction,enrich the layers of plants,and pay attention to the construction of waterfront landscapes and mountain landscapes. |
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