| China is rich in natural resources,but there are problems such as high consumption and waste of resources.With the acceleration of urban construction in China,the consumption of land resources,water resources,energy and other resources so on will be higher and higher.Under the background of vigorously advocating the construction of conservation-oriented society and conservation-oriented gardens in our country,combining with the requirements of strengthening the construction of urban leisure parks,strengthening the construction of sponge cities and building standardization system with conservation-oriented gardening during the 13 th Five-Year Plan of Harbin,we should build conservation-oriented gardening landscape,reduce resource consumption,rationally utilize resources and reduce investment to build it.It is imperative to design a good ecological environment.Under the background of China’s vigorous promotion of building a conservation-oriented society and saving gardens,combined with the construction of urban leisure parks during the 13 th Five-Year Plan period of Harbin,strengthening the construction of “sponge city” and building a standardized system in combination with conservation-oriented landscaping,it is imperative to build a conservation-oriented garden landscape,reduce resource consumption,rationally use resources,and reduce investment to create a good ecological environment.Taking the construction of Central Park in Pingfang District of Harbin as an example,this paper starts from the perspective of economizing gardens.Using GIS technology and runoff coefficient method,the topographical terrain of the park is analyzed,and the collection potential of the park rainwater is calculated.The main purpose is to design a water-saving landscape,and to carry out landscape design for the park in terms of water saving,energy saving and material saving.(1)This paper analyses the topography of the park through GIS technology.The elevation of the Central Park is between 161 m and 194 m,and the elevation height difference is about 33 Mm.The slope of the project land ranges from 0 to 15 degrees is concentrated between 0 and 15 degrees,mainly between 0-5 degrees.The slope direction is divided into eight slope directions,and there are two virtual River networks.(2)The total rainfall of the Central Park is 778480 m3.The theoretical rainwater collection capacity is 234060m3,while the actual rainwater collection capacity is 138970 m3,accounting for only 17.9% of the total rainfall.This shows that the trainwater collection and utilization potentialof the Central Park is huge.Six water storage ponds are built in the park,and the abandoned drainage ponds are connected with them.The total volume of abandonment tank is 234 m3,and that of storage tank is 1219 m3.(3)The layout structure of the central park landscape design is "one,one ring,four districts".The "one" refers to the ecological greenway designed along the Youxie Street,the "one ring" refers to the pedestrian walkway system in the park,and the "four districts" refers to the ecological landscape area,forest health preservation area,leisure sports area and popular science recreation area.The road system in the whole area consists of a circular walkway 5 meters wide and a 2-3meter garden road,as well as a 1-1.5 meter garden path.There are 35 scenic spots in the park,including waterfront landscape,plant landscape,square landscape and other landscape types.(4)Rainwater harvesting and utilization in the central park,from the four elements of green space,water body,square,road and building,the measures of rainwater harvesting and utilization in the four areas were designed respectively.Rainwater infiltration is the main method in forest health area,and rainwater collection and storage is the main method in amusement area.Rainwater utilization measures in leisure sports area and ecological landscape area adopt the combination of rainwater infiltration and collection and storage.(5)In the design of parks,water-saving landscape design is realized by recycling and utilizing rainwater;material-saving landscape design is realized by choosing durable,low maintenance and easily replaceable construction materials;energy-saving landscape design is realized by conversion of solar energy.(6)From the economic,ecological and social aspects,the benefit analysis of the economical design of the central park shows that the annual rainwater runoff collection will meet 74.1% of the rainwater utilization of the park.In the creation of the thesis,the relevant concepts of the conservation garden will be closely linked,and the design of the park landscape will be combined with the design of the park landscape to explore the economical landscape design method suitable for the urban park,which will provide reference for the subsequent urban park conservation landscape design. |
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