Research On Ecological Landscape Design Of Riparian Zone Based On Ecosystem Services

The urban riparian landscape space has high ecological,cultural and economic value due to its convenient transportation,hydrophilic location,superior ecology and historical imprint,and can provide high-level ecosystem services.However,due to the high intensity of human interferencein the urban riparian zones,the current ecological environment is not optimistic,and there are widespread phenomena such as blue-green space fragmentation,low ecological security function,monotonous recreation space,low product supply efficiency and regional cultural fracture and so on.Under the background of ecological civilization construction in the new era,how to improve and give full play to the efficiency of ecosystem services in urban riparian zones and meet people’s growing demand for a better life is an important task faced by landscape ecological landscape design at this stage.Based on the theory of ecosystem services,this paper analyzes the changes of landscape spatial elements and the evolution of external service demand in the process of urbanization from two levels: the internal characteristics of space and the appeal of external service functions,clarifies the types of ecosystem services and service efficiency improvement factors in urban riparian space,and then summarizes the framework of urban riparian ecological landscape design system based on ecosystem service theory,and guides the ecological landscape design of urban riparian zone in Linquan County.he paper is mainly divided into four parts: "Related Theoretical Research","Practice Case Analysis","Method System Construction" and "Empirical Application".(1)Relevant theoretical research: Through the study of the intrinsic spatial characteristics of riparian landscape and the change characteristics of intrinsic ecological elements in natural state and after urbanization,the results show that the spatial fragmentation of the riparian landscape after urbanization intensifies and the deterioration of various ecological elements intensifies.Secondly,the spatial characteristics and functional demands of riparian landscapes in four stages of primitive society,agricultural society,industrial society and modern society were comparatively studied,and the functional demands of ecosystem services gradually changed from "equal" to "equity" to "inclusive".Finally,taking the three basic needs of human beings as the starting point and based on the four basic services of ecosystems,the ecosystem service levels of landscape space are constructed,which are the first level of ecological security services,the second level of material product supply services and the third level of spiritual and cultural bearing services.(2)Practical case analysis: The case selection follows the principle of typicality and pertinence,takes the urban scale of Linquan County as a reference,and analyzes the typical and universally recognized urban riparian ecological landscape design cases in China under the same scale.Starting from the three major human needs and the four major service types of ecosystems,the specific ecosystem service dimensions of each case are first refined,which can be divided into nine dimensions,namely biodiversity,habitat habitat,stormwater regulation,runoff regulation,water purification,production and living materials,landscape recreation,landscape aesthetics and cultural inheritance,and secondly,the common characteristics of native landscape space and the translation of morphological factors in each dimension are analyzed,and the ecological landscape design methods under each dimension are summarized.(3)Method system construction: The research aims to improve the efficiency of ecosystem services in urban riparian zones,and from the perspective of supply side and demand side,the ecological landscape design system of riparian zones based on ecosystem service functions is mainly summarized into three categories: "ecological security services,material product supply services,and landscape culture bearing services".Summarize specific planning and design methods,including restoring the ecological background and constructing a stormwater regulation system;Optimize plant communities and construct animal habitat conditions;Expand the function of recreation space and improve the supply of supporting facilities;Preserve the texture of the site and inherit the four aspects of multiculturalism.(4)Empirical application: Linquan County is located in the northwest of Anhui Province,and the county is densely packed with rivers,mainly including Scorpion Gou,Wenquan River,and Fulin River.Driven by the background of actively building a city of "ecological security,happiness and livability,green leisure and characteristic humanities" in Linquan County,taking the landscape design of the urban riparian zone of Linquan County as an example,it is found that the ecological security service function of the urban riparian zone is low,and the material product support and landscape culture bearing service are seriously lacking.Design services to enhance ecological security through water purification,phytoremediation as well as habitat construction,identifies citizens’ recreational needs by demand research and designs multi-functional recreation spaces to increase material product support services;In terms of cultural landscape,cultural carrying services are enhanced through concrete techniques such as theme squares,cultural structures,sketches,and paving.The research results of this paper innovate the paradigm of urban landscape space ecological design in theory,propose a riparian ecological landscape design method system based on ecosystem services,and form an optimization order based on human demand and landscape space service supply.In practice,it provides valuable theoretical guidance and practical reference for the ecological landscape design of urban riparian zone from the perspective of ecosystem services in the new era.