Investigation And Analysis On Landscape Plant Resources And Arrangements Along Primary And Secondary Path Of Central Region In Zhengzhou City

Zhengzhou city is located at middle leaning towards the north part of Henan Province,on the south bank of middle state of Yellow River.It lies between east longitude 112°42′～114°14′,during the 34°16′～34°58′north latitude.It links with Kaifeng city in the east,next to Luoyang in the west,adjoins Xuchang in the south,and faces Xinxiang city across yellow river in the north.Based on the landscape plants investigation and analysis of urban primary and secondary path in the center city of Zhengzhou,this paper puts forward the problem of the landscape plant application,and has offered the suggestion of rebuilding,optimizing for the future urban green lands building.The main study points:1.The landscape plants of primary and secondary path in the cental region of Zhengzhou city contains 84species,including 44 species of arbors,27 species of bushes, 12 species cover plants,and 1 liana.There are 35 species of native plants and 13 native bushes.The living type shows that the tall big arbor among shade trees are taken excellently,especially the tall big arbor fallen leaf trees are the majority.The fundamental varieties landscape plants of urban primary and secondary highway in the center city of Zhengzhou is Platanus acerifolia,and the key varieties trees are Sophora japonica,Ligustrum lucidum,Fraxinus chinensis,Populus tomentosa,Prunus cerasifera f.atropurpurea,Koelreuteria bipinnata var.integrifolia, Ailanthus altissima,Pterocarya stenoptera.Albizia julibrissin In the urban green lands, Ligustrum vicaryi is the most as hedgerow bush plants,the second are Euonymus japonicus,Sabina chinensis 'Kaizuca',Ligustrum quihoui,Photinia x fraseri,Berberis thunbergii vat.atropurpurea.In the other bushes,the most is Rosa chinensis Jacq,and the second are Lagerstroemia indica.,Sabina chinensis 'Kaizuca',Euonymus japonicus, In the cover plants,the most is Zephyranthes candida,the second are the type of cold season lawn grasses,for example Poa pratensis Lolium perenne.Festuca arundinacea, Oxalis corymbosa,Trifolium repen,Liriope spicata,Liriope platyphylla.The vertical landscape plant is Parthenocissus tricuspidata2.Along the urban primary and secondary path in the center city of Zhengzhou,there are 12 kinds of typical plant arrangement ways. (1) Cedrus deodara + Prunus cerasifera f.atropurpurea—Ligustrum vicaryi + Sabina chinensis 'Kaizuca"—Oxalis corymbosa.(2) Ligustrum lucidum—Lagerstroemia indica + Ligustrum vicaryi + Berberis thunbergii var.atropurpurea + Buxus sinica—Zephyranthes candida.(3) Platanus acerifolia—Ligustrum vicaryi—Zephyranthes candida.(4) Platanus acerifolia—Sabina chinensis 'Kaizuca'—Zephyranthes candida.(5) Ligustrum lucidum + Prunus cerasifera f.atropurpurea—Ligustrum vicaryi + Euonymus japonicus+Rosa chinensis—(Poa pratensis)+(Lolium perenne)+(Festuca arundinacea) + Zephyranthes candida.(6) Cedrus deodara—Sabina chinensis vat.chinensis 'Kaizuca' + Photinia x fraseri + Ligustrum vicaryi + Rosa chinensis—Salvia splendens(Clendula officinalis,Tagetes patula,Petunia hybrida,Brassica oleracea vat.acephala)(7) Ginkgo biloba + Sabina komarovii 'Pyramidalis'—Magnolia liliflora + Syringa oblatea+ Euonymus japonicus—Liriope spicata.(8) Ligustrum lucidum—Ligustrum vicaryi + Ligustrum quihoui + Berberis thunbergii var.atropurpurea—Oxalis corymbosa.(9) Sophora japonica—Cercis chinensis + Hibiscus syriacus—Liriope platyphylla(10) Amygdalus persica var.persica f.atropurpurea—Ligustrum vicaryi—(Poa pratensis Linn.) +(Lolium perenne Linn.) +(Festuca arundinacea).(11) Ligustrum lucidum—Cerasus serrulata + Ligustrum vicaryi + Photinia x fraseri—Salvia splendens(Clendula officinalis,Tagetes patula,Petunia hybrida,Brassica oleracea var.acephala)(12) Ligustrum lucidum—Sabina chinensis 'Kaizuca' + Euonymus japonicus—Zephyranthes candida.3.The landscape plants application problems of urban primary and secondary highway in the center city of Zhengzhou are analyzed and discussed.1) The kinds of landscape plants is to be partial and few,the native plants is used insufficiently,the local characteristic is not outstanding.2) The structure of landscape plants of highway is not reasonable.3) The landscape plants community and its structure are too simple.4) Urban green lands and other key landscape elements are considered less synthetically.4.Suggestion for the future urban geen lands building of the urban primary and secondary highway in the center regin of Zhengzhou city was presented here.1) The landscape plants should be exhanced bio—diversity,avoid simplifying.2) The study of landscape modes should be carried out,and building local characteristic community's modes.