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Research on Plant Community Landscape of Public Park in Changsha City

Author: LiuWeiSi
Tutor: YanYuJuan
School: Central South University of Forestry Science and Technology
Course: Ornamental Plants and Horticulture
Keywords: Green parks Plant communities Plant Landscape Evaluation Analytic Hierarchy Process Changsha
CLC: S731.2
Type: Master's thesis
Year: 2009
Downloads: 251
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Abstract

Park green space is an important part of urban green space, and the plant community is the basic unit of the city of green parks, its structure characteristics determine the quality of the park green plants landscape and ecological functions. Plant communities be able to build a scientific and reasonable green landscape quality and efficient, stable and healthy development, and plays an important role in the protection and landscaping to enhance the park landscape effects to maintain the urban ecological balance. Therefore, the study of the city of green parks community, has an important significance for the sustainable development of the of Changsha city park plant landscape and creating the landscape of modern urban garden plants. In this study, three main Changsha representative Park: Martyrs' Park, Xiaoyuan Park, and Hunan Forest Botanical Garden for the study area, conducted a survey of 98 relatively stable plant community. First investigation and analysis, community type, ecological structure and species diversity of plant community species composition. Typical plant communities in 15 survey communities through the establishment of a reasonable evaluation system, selection of the 10 evaluation factors using the analytic hierarchy comprehensive evaluation of the three elements of eco-efficiency, visual quality, and social effects. Secondly, select three typical community in the evaluation of plant communities to draw the plant configuration plan from interspecific, intraspecific relations community structure and community landscape effects, further analysis community configure applications and shortcomings summary of Changsha City Park Green Community in the typical characteristics and quality assessment. Finally, on the basis of the plant community research and comprehensive evaluation of the existing park plant communities further optimization suggestions for deeper explore in order to enhance and improve the city park green plant landscape. The study results show that: 1 Changsha city park species richness, zonal native plants, but the area compared to the total number of species of native plants is very low. Changsha kind of green parks 98 communities, a total of 122 kinds of woody plants, belonging to 48 families, 84 genera, accounting for 45.86% of the of Changsha existing species. Which belongs to Hunan zonal natural distribution of plant species in 82 species, accounting for 67.21% of the total number of plots plants surveyed. The higher proportion of trees in native plants application, to 78.18%, while the plants in a higher proportion of foreign Introduction and cultivated plants. 2 Changsha City Park Plant Communities of various types, the community has some zonal characteristics, but the transitional dominant vegetation types. Changsha city park-like community of five types of community types, including transitional vegetation types evergreen deciduous mixed more significantly, accounting for 29.59% of the total number of communities; zonal vegetation types evergreen broad-leaved forest accounted for 18.37 of the Community of the total number of %. Changsha city park plant communities dominant species are more abundant, but most types of applications is still not widely, regardless of the tree layer and shrub layer, the use of high frequency are concentrated in a few species in Changsha Public Parks basic plant community structure is a combination of complex community of tree, shrub, grass, shrub layer species density in the community is only slightly larger than the tree layer. Evergreen species important values ??higher than the plots of the important values ??of deciduous trees in the survey plots of trees and shrub layers, respectively, accounting for 65.98% and 75.61% of the total number of sample sites. 5 different green parks, species diversity distribution no consistency regularity. Plots communities different layer chip species richness index and Simpson index are roughly rendered tree layer gt; shrub layer gt; trend of ground layer; the Shannon-Wienner index then is the tree layer gt; to be layer gt; shrub layer; Pielou The evenness index layer gt; tree layer gt; shrub layer. Different parks, due to its functions and different conservation and management measures, the index is a significant difference. The three parks in the richness of the Martyrs Park Margalef index, Simpson index, Shannon-Wiener index and Pielou index is the highest, botanical gardens, followed Xiaoyuan Park lowest. 6 Application AHP to establish a plant community landscape evaluation system to determine the evaluation factors and their weights reflect the importance of the decision to plant community landscape quality indicators and indicators from the three aspects of the ecological effects, visual quality, and social effects for plants The Community Landscape evaluation provides a scientific basis, but also provide a valuable reference for other types of plant landscape evaluation. 7 typical plant communities of the three green parks using the analytic hierarchy comprehensive evaluation and analysis. The results showed that the plant communities only reach the of grade Ⅰ landscape quality landscape analysis for 7% of the total number of communities, the overall plant community landscape in the middle level, high quality and excellent plant landscape is relatively small. 8 ways to optimize the urban park green community structure: the rich existing plant species, increasing the application of native plants, increase the diversity of ornamental plants; reference to the level I Changsha Public Parks comprehensive evaluation of plant community structure, adjustment of the trees and shrubs quantity ratio evergreen and deciduous trees than; pay attention to Park Greenland biodiversity protection; the plant community landscape design suited to local conditions.

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CLC: > Agricultural Sciences > Forestry > Green construction > Landscaping > Urban greening
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