| In recent years,with the acceleration of urbanization,people’s requirements for living standards are also improving.This is not only reflected in urban architecture,roads,facilities and other infrastructure construction,but also put forward new expectations for urban greening and urban landscape construction concept and style characteristics.In recent years,with the rise of tourism in Gansu province,Lanzhou,as a window city of Gansu Province,how to introduce the development of urban landscaping into a track with distinctive regional colors,prominent cultural themes and in line with the development requirements of the new era has become an important subject that Lanzhou must face and seriously consider.Plants are the core factors of urban garden greening landscape,how to select the landscape,ecological,cultural and aesthetic performance of plant species combination preparation,and constantly optimize the reasonably and effectively is guarantee the priority of lanzhou city landscaping level,and with a bottleneck problem is how to development and utilization of native plant resources.In view of this practical need,this paper investigates the status quo and advantages of native plants in urban landscaping configuration in Lanzhou city by means of literature review,interview survey and field test.The main achievements are as follows:1.The survey shows that there are 259 kinds of native plants that can be used for urban landscaping in Lanzhou,among which 99 kinds have been applied to different degrees,with utilization rate of 38.2%,which has a huge space for further development and utilization.2.Through comparative study on the stress resistance of neutral plants and imported plants,it was found that the survival rate of the former was 87.5%,and the latter was69.2%.In addition,in terms of drought tolerance,neutral plants were also significantly better than imported plants.3.The comparative analysis of the construction cost and maintenance cost of neutral plants and imported plants shows that neutral plants have the sustainable development advantages of saving social resources,energy saving,low carbon and environmental protection.4.The results of interviews and questionnaires show that 38% of the residents agree with native plants,46% agree with imported plants,and 16% hold a neutral attitude. |
