周口市几类主要城市绿地园林植物调查和应用评价.pdf

华中农业大学专业学位硕士学位论文景观较单一;④乔木植物栽植密度过大:⑤地被植物资源贫乏,草花应用少。建议重点做好以下几个方面的工作:①增加周口市主要城市绿地的园林植物种类,提高园林植物生物多样性;②加强垂直绿化植物的应用,丰富城市绿地的竖向景观;③重视速生树种的选择,增加速生树种与慢生树种的比例;④加强对彩叶植物的引种驯化和应用,丰富园林绿地植物景观的季相变化;⑤提高城市绿地植物的配置水平, 提高园林绿地植物景观多样性。关键词:城市绿地;园林植物;调查;应用评价;周口市周U市几类主要城市绿地同林植物调查及应用评价 Abstract The landscape plants are the main materials ofgarden building incities,and selection oflandscape plants plays a veryimportant role inthe ess ofthegarden building,but investigation concerning about landscapeplants inZhoukou city isreally thewhole,it is atthestage ofthebeginning main aim ofthisstudy was toinvestigate and sort out data of45samples forseveral types ofurbangreen lands in Zhoukou city,positive parks,green lands ofstreet,green lands ofsquare and SOon,and in order toknow the application andlandscape effect ofplants inthe different seasons andclimatic resultswere concluded asfollowing: plants presented thediversity ofcharacteristics inurban green lands in Zhoukou city:There were 33kinds oflandscapeplant species inurbangreenlands of Zhoukou city intotal,belonging to60familiesand 106 there were 80 species and 66genuses %and %separately ofall landscapeplants inZhoukou were 2 angiosperms and 2gymnosperms,1 00 woody plants,27 herbaceous plants and 6lianas,90 broad leavedplants,1 0conifers,69 evergreen plants and proportion of trees and shrubs was theproportion ofevergreen plants andevergreen plants was 1:,theproportion oftrees, shrubs andgrass was ::1. ofornamental characteristics oflandscapeplants:There were 40foliage plants,45plants withornamental flowers,14 fruit—effectplants(including 0fruittrees),4 plants withornamental trunksand branches,8 plants withornamental shapes inurban green lands ofZhoukou percentage ofplants blooming inspring,summer, autumn and winter were 49%,29%,20%and2% main colour was white, accounting for37%,the ne