Study On The Structure Of Plant Community And Quality Of The Landscape Greening In The Expressway Node

This article mainly conducted investigation and study of the node plant community structure and the landscape afforestation quality characteristic of Nanjing-Hangzhou expressway .1. On the foundation of nodes plant community composition and structure analysis,it conducts : The species are richer in service areas than exchanges; The type of broad-leaved trees in service areas is significantly richer than conifers; Application of anti-pollution trees is up to 70% or more;The type of plant communities in two exchanges near Nanjing (Luojiabian and Shangxing) basically live in the same type of life with North subtropical vegetation, Yixing and Liyang South exchanges with the subtropical evergreen broad-leaved forest can reflect geographical features; The utilization floristic component being respectively various, plant multiplicity can distinct corresponding responses the vegetation belt characteristic.2. The analysis of joint ecological landscape Community Benefit shows : Plant type, specification, quantity and so varyly influence its green size; The tree being mainstay, grass and shrub mix-green coating unit area is normally more than single structure of the Greenbelt; The ecological benefits is in proportional relationship to the flat green leaf area.3. The research of node landscape of green landscape and the quality of economic shows : Though the greenery exchange ecological benefits (photosynthesis, Dust and transpiration) to estimate the Liyangnan Greenland total exchange volume Green Day the ecological and economic benefits is $857,000, hectare greenbelt that the average ecological and economic benefits is $ 223,000; Donglushan service area configuration of the different plant communities and landscape effects of cost comparison drawn : small selection of specifications for the tree and shrub grassland complex mix of communities, not only reasonable structure, diversity, landscape and ecological effects.4. Appraisal of nodes green landscape quality and satisfaction evaluation shows : The quality of the green landscape service area is important reflection of Nanjing-Hangzhou Expressway afforestation; on the three regions (Donglushan. Tianmuhu and Taihu) Landscape status, Main entrance signs 47 individual indicators are most satisfied (2.88%). hanging trees and the satisfaction is lowest (1.14%).5. The research of joint construction of natural landscape and cultural landscape of fusion shows: The application and display of natural and cultural landscape in the expressway landscape creation should adhere to the people-centered. According to different road and the regional landscape feature extraction materials, make natural, ecological, historical and cultural context and expressway harmony, to construct Expressway geographical landscape features.6. Expressway construction landscape nodes should make tree, shrub, rattan and bamboo in a population of coordination among biomes, with composite quarter phase and affordable color.It should make different ecological characteristics of plants for them.Make full use of sunlight, air and land space, nutrients and moisture, to achieve ecological and scientific, layout of artistic and functional integration, economically reasonable, local style, to maximize the ecological, economic and social benefits.