Evaluation Of Synthetic Benefits Of Green Spaces With Different Configuration Patterns In Industry District

The evaluation of green spaces is the base of green space construction. As an important part of urban green space, the green space of industrial district exerts the ecological, social and economic benefits. However, the research on the synthetic benefit of green space and it configuration pattern is still lack. In this subject, based on the community investigation, the green spaces is divided into 4 types according to its function : the green spaces in front of office building, the green space around workshop, the small garden and the green space in the living district, in which each kind contains 4 samples with different configuration pattern.The evaluation system including 16 indexes distributed to 3 aspects of the ecological benefits, the aesthetical benefit and economic investment has been establish initiatively. And the evaluation has been adopted to assess the synthetic benefit of samples with 4 different configuration patterns in the same functional area. Based on this, the configuration pattern with the best comprehensive benefits has been explored, providing scientific advices for the practise in the green space construction. The results is showed as following:(1)Within the four typical configuration patterns of the green spaces in front of office buildings, the small arbor+shrub+ground layer pattern has the best ecological benefits, with the evaluation result of 0.6847 while shrub pattern has the worst ecological benefits, with the evaluation result of 0.5385; small arbor+small shrub+ground layer pattern has the best aesthetic benefits with the evaluation result of 0.9691 while the tall arbor pattern is the worst, with the result of 0.6893; shrub pattern has the lowest investment with the highest evaluation result of 1.000 while small arbor+small shrub+ground layer pattern has the highest investment of construction and maintenance with the lowest economic evolution result of 0.301; small arbor+small shrub+ground layer pattern has the best comprehensive benefit with the evaluation result of 0.7961 while tall arbor pattern has the worst comprehensive benefits with the result of 0.6698. Therefore, the optimized pattern of this kind of green spaces is small arbor+small shrub+ground layer, the arbors with mass crowns and stand firm are preferential, with the coverage around 40% and the coverage of shrub around 30%-40%. The layer of shrubs should be made up of shrubs with ornamental characters.(2) Tall arbor+shrub pattern has the best ecological benefits among the four typical patterns of green spaces surround workshops with the evaluation result of 0.8257 while pattern lawn has the worst ecological benefits with the result of 0.3265; small arbor+shrub pattern has the best aesthetic benefits with the result of 0.8448 while the pattern lawn has the worst aesthetic benefits with the result of 0.7304; small arbor+shrub pattern has the lowest investment with the highest evaluation result of 1.000 while lawn pattern has the highest investment of construction and maintenance with the lowest economic evaluation result of 0.231; the pattern tall arbor+shrub has the best comprehensive benefits with the evaluation result of 0.8111 while the lawn has the worstcomprehensive benefits with the result of 0.5035. The optimized pattern of this kind of green spaces is: the layer of arbors has the coverage higher than 80% with species grow fast and has strong resistance against air pollutions. The layer of shrubs has the coverage around 50-60%, giving property to evergreen species, sprinkled with flower shrubs to enrich the aesthetic benefits.(3) Tall arbori-small arbor+shrub pattern has the best ecological benefits among the four typical configuration patterns of the gardens in tindustrial district with the evaluation result of 0.8520 while lawn pattern at the latest with the result of 0.4014; tall arbor+small arbor+shrub pattern has the best aesthetic benefits with the result of 0.9620 while lawn pattern at the latest with the result of 0.7071; shrub+lawn pattern has the lowest investment of construction and m...