| The Pearl River Delta is in the leading level of landscape construction and one of the most abundant areas of landscape plants in China. The road is an important part in the city garden, and an important symbol of city civilization. Road greening, not only beautifies the Environment, purifies the air, reduces noise and dust, improves micro-climate, but also has economic, social and ecological benefit.The green plants application frequency and evergreen, deciduous ratio of76roads from Shenzhen, Dongguan, Zhongshan, Zhuhai, Yangjiang, Foshan in the Pearl River Delt were investigated in this study. The evaluation of greening landscape of the main roads were analysed by the method of SBE and SD semantic evaluation, plant configuration mode regression model established. Results have certain reference to improve the aesthetic value of city road green landscape. The main results were as follows:(1)Based on investigation and analysis of landscape plants in Pearl River Delta city, the road green space shared232plant species. The frequencies of spceis used in the path were studied. Planting modes included trees, rule type, natural type and mixed type. Plant configurations included tree-shrub-grass, tree-shrub, tree-grass, shrub-grass and other ytpes.(2)The regression model:Avenue Greenbelt:SBEA=5.489+0.889x uniformity-0.12×canopy size-0.163×branch height+0.217x trunk lines+0.022x pavement-0.094×infrastructure+0.321x Cover the negative+0.225x plant spacing-0.068x and environmental harmony degreeThe green belt:SBEB=6.941-0.097×uniformity+0.215×growth degree-0.038×plant configuration hierarchy+0.322×color abundance-0.125×Plant species+0.071×planting belt width-0.002×the road and the green belt scale-0.052×and environmental harmony degree+0.087×branch heightIn the green belt:SBEc=6.419-0.073x Planting density+0.220×growth degree+0.627x plant configuration hierarchy+0.078x color abundance-0.061x Plant species-0.155×planting belt width+0.049×the road and the green belt scale-0.109×and environmental harmony degree+0.127×anti-dazzle designBy dividing the green belt:SBED=4.248+0.461×planting density-0.734×plant configuration hierarchy-0.118×growth degree+0.434×color abundance+2.092×Plant species-0.398×pavement+0.322×sketch and architectural form of+0.640×planting belt width+0.119×infrastructureTraffic island green:SBEE=5.917+0.456×plant configuration hierarchy+0.685×growth degree+0.129×uniformity+0.435×infrastructure-0.328×color abundance+0.044×sight quality(3)The best that the plant disposition pattern trees, side branch, points, edges, traffic island green belt... |
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