中文摘要：

从理论、实践和期望3个角度论证了城市绿化斑块存在边缘区域,且存在可被利用的边缘生态效应,这一类型斑块所产生的边缘效应,不仅是绿化建设中不可忽略的一点,同时更应利用这一点为城市绿化规划增加科学性。对现阶段的城市绿化评估报告提出质疑,并提出＂城市绿化生态率＂的评价指标,阐述了城市绿化生态率的量化步骤。同时,将城市绿化与自然保护区的边缘效应进行了对比,得出城市绿化设计的推论,最终得到3条对城市绿化规划的指导意见。

英文摘要：

The existence of marginal areas of urban greening patches from the theoretical,practical and expectational perspectives,as well as the marginal ecological effects which could be exploited were argued.The marginal effect that produced by this type of patches could not only be ignored in the greening construction,but which should be taken advantage of to make urban greening more scientific.Doubt on the assessment survey of urban greening and the assessment indicater of ecological rate of urban greening were put forward and the quantizing steps of ecological rate of urban greening were elabrated.Meanwhile,a comparison between urban greening and the marginal effect of natural conservations was made to make inferences of the design of urban greening,and ultimately three instructive advices about urban greening planning were come up with.