Research On Landscape Upgrading Of Yellow River Greenway In Yong Jing County Gansu Province

As the ecological corridor of the city,the greenway not only provides the citizens with beautiful scenery and recreational space,but also plays the role of the ecological corridor integrating the fragmented ecological environment.At the same time,it also plays an important role in tourism organization in connecting the ecological tourist attractions along the route,and becomes a linear tourist space integrating recreational,ecological,social and economic functions.It also plays an important role in improving urban green infrastructure,and the quality of life of citizens.Therefore,it is highly concerned by governments at all levels.As the seat of the Liujiaxia Hydropower station,the Linxia Hui Autonomous Prefecture of Yongjing County,Gansu Province,the clear Yellow River flows through the city and the red cliffs along the coast extend endlessly,forming the beautiful and spectacular landscape paintings of Yongjing County.The Yongjing County Party Committee and the county government have attached great importance to the development and utilization of natural landscape resources and ecological construction projects,and rapidly built a green landscape road about 7 km long along the northern side of the Yellow River in the city section in 2017,meeting the needs of the public walking,cycling and battery car roaming,and becomes the indispensable green open space,where people can entertain and exercise in their leisure time.Thus,it becomes the greenway in local people’s minds.Due to the limitation of the funds and the recognition of the greenway at that time,the greenway only has a 6m wide color Tarmac tour route and green belts on both sides,which can only be regarded as a primary level greenway in terms of its function.With the economic transformation of Yongjing County and the development of the flower tourism belt on the South Bank of the Yellow River,the urban tourism has developed unprecedentedly.In order to achieve full potential of Yongjing’s favorable landscape pattern,the local government plans to upgrade the existing Yellow River Green Road around the upgrading of Ecology,humanities,people’s livelihood and tourism economy.It is hoped that the ecological pattern along the Yellow River can be optimized,the landscape of the city can be enhanced,the tourism industry along the Yellow River can be revitalized,and the green recreational needs of the citizens and tourists can be better met.This paper takes the Yellow River Greenway as the research object,starting from the essential requirements of the Greenway,in-depth considering of the status quo and problems of the green road,through excellent design case study and problem research at home and abroad,to further explore the theoretical basis and technical issues of green road upgrading,and upgrades the design of the specific practice on the basis of systematic research of the basis of Yongjing County along the Yellow Green Road.The conclusions are as follows:1.Combined with the preliminary survey and investigation of the area,the paper puts forward six key problems in the upgrading and reconstruction of the Yellow River Greenway in Yongjing County: the problems of barren beach soil,poor vegetation,degradation of green land,incomplete corridor structure and so on;the problems of flood and waterlogging;the problems of soil salinization caused by water level and strong transpiration;the problems of conservation pressure caused by drought stress;the problems of incomplete function of Greenway;and the problems of unreasonable landscape pattern,as entry points for researches and designs.2.Through the theoretical discussion on the function and structure of the Yellow River greenway,it is pointed out that the ecological construction of the greenway should pay attention to the three aspects of corridor space,plant diversity and landscape stability;the improvement of the recreational function of the greenway should focus on folk culture,Research on visitor needs and characteristic space;greenways should have social functions such as integrating social tourism resources,connecting urban slow-type systems,highlighting regional cultural characteristics,serving citizens’ ecological recreation,and revitalizing regional economy;greenway landscape structure should focus on plane Key links such as functional layout,facade space display,and environmental coordination and integration.3.Based on the theory of plant design under environmental stress,the following conclusions are drawn: the plant planting design should give priority to native tree species in order to improve the stability of the community;the survival rate of the plant should be improved through the principle of suitable site and suitable tree species;the economic cost should be reduced by combining fast-growing tree species with slow-growing tree species;and adopting artistic methods to improve the ornamental value of greenway and other plant design strategies provides a guiding ideology for the greenway plant design.4.The empirical enlightenment based on the analysis of excellent cases at home and abroad is: greenway design should be based on the overall ecological landscape pattern and cultural characteristics of the region,and give full play to the role of greenway integrating habitat,connecting functional subjects,and highlighting cultural heritage;ecological restoration should Pay attention to systemicity and process;flood control,salinized land management and conservation-oriented garden construction should be based on the forefront of subject theory and technology to achieve high-quality sustainable development goals with new ideas,new technologies,and strong grounding.5.Based on the characteristics of the site and combined with the relevant theoretical discussion and the case study of the Yellow River Greenway,it is concluded that: three basic design principles,which include ecological protection priority,diversity of landscape functions,highlighting the local culture;six design strategies,which include regional Comprehensive Development,ecological system restoration,flood control with prevention and treatment,regional diagnosis and treatment of salt,low-cost development,urban integration of mountains and rivers;and the guiding ideology of urban integrated green space which integrates ecological safety,rational function,beautiful environment,convenient transportation and profound culture.6.From the point of view of respecting the current situation of the site,according to the general design guidelines,taking the comprehensive promotion strategy as the starting point,relying on the landscape pattern of Yongjing County and combining the culture of Yongjing County,it forms a "one axis,one road,one corridor,two belts,four gardens,seven districts,twelve nodes" Yellow River Green Road Upgrading Program.The specific contents of the plan include greenway integral lifting design,plant special design,architecture special design,landscape facilities special design,rain and flood management special design,saline-alkali treatment special design,ecological restoration special design,etc.The practical project of Yellow River greenway advanced design validates the scientificity and feasibility of the theoretical research in this paper.