摘要在建设节约型、环保型社会的大背景下，屋顶花园以其集约利用城市空间、增加城市绿地面积、改善城市生态环境、提高建筑节能效果等独特优势而日益受到重视并得以迅速发展。本文以屋顶花园为研究对象，采用实验研究、理论分析等手段，对其环境改善效应进行了初步的研究，并以研究结论为依据，对屋顶花园的常规设计进行了改良。主要研究包括：（1）通过降温效果实验，对屋顶花园夏季的降温效果进行了初步的研究。研究发现，在夏季午后的高温时段，绿化屋面的降温效应最为明显。针对降温效果实验中发现的高温胁迫问题，引入喷灌技术；结合屋顶花园灌溉特点，设计出温湿两因素控制的屋顶花园自动化节水灌溉流程；基于对绿色能源-太阳能的有效利用，给出了高效太阳能全自动温湿自动灌溉的设计方案。（2）对屋顶花园的城市水环境改善效应进行了研究，综合城市雨水利用系统的特点，并且充分利用土壤层对雨水的渗透净化作用，进行屋顶花园的雨水利用系统改良。为了加强屋顶花园绿化系统对屋面雨水径流的水质净化效应和蓄滞雨水效应，提出了对屋顶花园绿化结构部分和铺装部分的改良设计。（3）以沭阳县健康家园92#楼三楼屋顶花园项目为例，结合以上研究结论，给出了基于增强环境改善效应的屋顶花园设计方案。关键词：屋顶花园；环境改善效应；降温效果；水质净化；蓄滞雨水TheStudyonEnvironmentalImprovementMechanismofRoofGardenanditsDesignApplicationAbstractWiththeintensificationoftheurbanhousingcircumstanceproblem,therooftopgardendevelopsrapidlyinthebackgroundofconstructionofsavingsocietyforitsuniqueadvantagessuchastheintensiveuseofthelimitedurbanspace,theincreaseofthegreenaeraincity,theimprovementoftheecologicalenvironment,theimprovementoftheenergy-savingeffectofthebuildingsandsoon.Inthisdissertation,theroofgardenistakenastheresearchobject,anditsimprovementeffectonenvironmentisstudiedbyexperimentaltheoreticalstudy.Andtheconclusionsofthestudyareappliedinthedesignoftheroofgarden.Themaincontentsandachivementsinthedissertationareasfollows.Firstly,bydoingthetemperaturecontrolexperimentofroofgarden,thetemperatureadjustmenteffectisstudiedindetail.Theexperimentresultshaveshownthat,thecoolingeffectismostobviousinthehotafternoon.Inordertosolvethecross-stressofhightemperaturewhichisobservedinthetemperaturecontrolexperiment,theantomaticwater-savingirrigationprocesswhichiscontrolledbytemperatureandhumidityisdesignedbytakingusingofautomaticwater-savingmicro-irrigationtechnology.Fortheaimofenergyconservationandenvironmentalprotection,theenergy-savingmeasuresofroofgardenisstudiedindepth.Theantomatictemperatureandhumidityirrigationtechnologyisusedtomakeeffectiveuseofthesolarintheroofgarden.Secondly,theurbanwaterenvironmentalimprovementeffectofroofgardenisstudied.Andtherainwaterusagesystemisimprovedbasedonthestudyonthefeatureofurbanrainwaterusagesystemandtheinfiltrationpurificationeffectofthesoil.Thereformproposalsofthegreenlandandpavementofroofgardenaregivenfortheaimofdecreasetheearth’ssurfacerainwaterandpurgingtherainwaterpollution.Thirdly,theroofgardenprojectofShuyangJiankangHomesteadwhichisbuiltonthethirdfloorplatformofNo.92Buildingistakenasanexample,andthedesignofrooofgardenwhichcanenhancetheenvironmentalimprovementeffectispresentedbasedonthecombinationoftheaboveconclusionofthestudy.Keywords:roofgarden;environmentalimprovement;temperatureadjustmenteffect;waterpurification;rainstorageanddelay目录第一章绪论..........................................................................................................................11.1研究背景与意义................................................
