全球城市广泛使用以草坪为基础的城市绿化模式，但投入高、生态效益低，导致全球城市景观严重均质化，不能满足城市绿色基础设施需求。花卉混播是一种高生态效益、低维护、景观美好、替代草坪模式的新型植被，可提供雨洪控制、栖息地等生态服务功能，顺应了城市生态建设需要，是全球植物配置的新趋势。但花卉混播组合构建尚依靠经验，限制了混播植物的种类和应用范围。研究表明，植物功能性状和功能性状多样性（FD）是筛选混播植物的有效方法。拟重点围绕花卉混播植物物种库及其筛选指标体系开展前期研究混播植物，在资料和前期观测植物功能数据的基础上，构建包含野生和栽培花卉的中国北方混播物种库；建立花卉混播植物筛选指标和体系，为建立花卉混播的设计模式，提升绿色基础设施的生态服务功能提供科学依据。

Bring nature in the heart of urban life and creating ecologically functioning urban landscape, rich in wildlife habitat, may challenge some of the core tents held by nature conservationists and restoration ecologists. The mode of urban landscape based on the lawn which is widely applied in the world could not satisfy the requirement of urban green infrastructure no longer. As a new kind of vegetation, flower meadow could provide a novel plant landscape and some ecological services such as storm water management, bioretention facility and species refugia, and its higher ecological effects and lower maintenance is also consistent with the requirement of urban ecological construction, thus result a broad recommendation. Previous research has shown that plant functional traits and functional diversity (FD) are effective methods to select plant . .On the basis of the previous resource and research data, this research is aimed to: 1) build a north-China flower meadow species database contained wild and cultivated flowers; 2) establish a standard by FD method to select the species for flower meadow and building a system of fast selection; The purpose of this study is to find a method to design a flower meadow with a long-term landscape scientifically.