Researching Of Green Space System Of Xicheng District And Planning Of Green Space System Of Economic And Technological Development Zone Of Dongying

The urban ecological environment is gradually deteriorating.The green space system plays a role in creating the human settlement environment of the city,strengthening the cultural landscape of the city,regulating the climate,monitoring and improving the environment.As Dongying City is located in coastal saline-alkali land,and Dongying xicheng area has a relatively mature green space system.The Economic and Technological Development Zone of Dongying is a newly-built development zone,and there has not yet planned a complete urban green space system.Based on the comprehensive survey of the green space system in xicheng district and the existing green space system in the Economic and Technological Development Zone.We kuow the level and status of the existing green space system in xicheng district,this is the premise and basis for planning the green space system of Economic and Technological Development Zone.In this paper field investigation and data acquisition method,reseach the green space system layout,the green space type,the major green space indicators and the engineering measures were also investigated and were conducted to investigate tree species in 10 streets,6 residential areas and 4 parks in the center of xicheng district and construction of Economic and Technological Development Zone of Dongying.The results of the survey are as follows:1.The green area of the xicheng area is 2484 hectares,the green space rate has reached 25.3%,the green land in urban and rural areas rate has reached28.6%,the green coverage rate has reached 33%,the park green area is 642.6 hectares,and the per capita park green area is 11.9m~2,per capita public green area is 46m~2.The part area of green land in Economic and Technological Development Zone of Dongying is 1037.43 hectares,built up area the green space rate has reached 28.9%,and built up area the green land in urban and rural areas rate has reached 31.6%,built up area the green coverage rate has reached 36%.The types of green space include park green areas,attached green space,green area for environmental protection,land for squares,and regional greenbelt.Among them,regional green space only includes production green space.There are 23 kinds of tree species with good growth potential,such as Chinese ash and Sophora japonica Linn.There are five types of engineering measures,such as drain flush method and ground cover method.2.There are some problems such as low green space rate,low greening index,lack of green space types,uneven distribution of green space and monotony of green tree species.The results of the Economic and Technological Development Zone of Dongying plan are as follows:1.When planning green space systems in the planning area,the overall structural layout is"one circle,one zone,one core,two belts,two pieces,three longitudinal and three transverse,multi-gardens".There are five types of green space,including park green space(550.8 hectares),attached green space(1988.8 hectares),land for squares(16 hectares),green area for environmental protection(316 hectares)and regional greenbelt(310 hectares).The greenbelt accounts for 5.7%,20.5%,0.16%,3.3%and 3.2%of the total area.Among them,regional green space includes production green space and landscape green space.2.The planning objective are divided into three objectives:the short-term,medium-term and long-term goals.By the 2020,the urban green space rate will be 27.2%,the green land in urban and rural area rate will be 28.1%,the green coverage rate will be 32%,the per capita green area is 50.3m~2,and the per capita park green area is 7.5m~2.By the 2025,the urban green space rate will be 28.8%,the green land in urban and rural area rate will be 30.7%,the green coverage rate will be 34%,the per capita green area is 55.6m~2,and the per capita park green area is 8.7m~2.By the2030,the urban green space rate will be 29.2%,the green land in urban and rural area rate will be 32.8%,the green coverage rate will be 36.5%,the per capita green area is 58.9m~2,and the per capita park green area is 10.2m~2.3.There are 8 tree species of key,such as are elm,robinia,goldenrain tree,prunus virginiana,albizzia julibrissin,sycamores,Platycladus orientalis,Ligustrun lucidum.There are 38 tree species of backbone,such as are paper mulberry,poison sumac,flowering plum,torch tree,honeysuckle,chinese flowering crabapple,Melia azedarach.There are 22 tree species of common,such as are cedar,pyrus bretschneideri,chionanthus retusus,moor besom,chinese redbud,cedrela sinensis,excoecaria sebifera,ulmus parvifolia.There are 5 color leaf tree species of introduced,such as are prunus persica atropurpurea,sophora japonica var golden,Gleditsia sinensis,Sophora japonica,cotinus coggygria.4.There are five kinds of green engineering measures,drainage irrigation,ground cover,rotary tillage soil and local replace,green insulation layer is laid,biotechnology improvement.The main engineering measure is to lay the green insulation layer in the Economic and Technological Development Zone of Dongying planning.