【摘要】：屋頂綠化是由傳統(tǒng)地面綠化上升為空間立體綠化的綜合性現(xiàn)代綠化新技術(shù),它不僅可以更多的爭取綠化空間,緩解用地矛盾,還可以改善城市生態(tài)環(huán)境、調(diào)節(jié)小氣候、保溫隔熱、美化環(huán)境、陶冶人們情操等多重功能。蘭州市作為甘肅省的省會(huì)城市,其生態(tài)環(huán)境脆弱、城市綠化用地緊張,面對當(dāng)前城市綠化用地難以擴(kuò)增的現(xiàn)實(shí)問題,實(shí)施屋頂綠化可有效增加綠化空間面積。本文以蘭州市生態(tài)環(huán)境狀況為現(xiàn)實(shí)依據(jù),針對蘭州市目前屋頂綠化現(xiàn)狀,對屋頂綠化草坪種植基質(zhì)、屋頂綠化種植植物的選擇以及屋頂綠化施工設(shè)計(jì)新技術(shù)等內(nèi)容進(jìn)行了研究,并得出以下主要結(jié)論：(1)在不同處理的基質(zhì)中,綜合各基質(zhì)中供試植物草坪草的生長狀況可知處理3基質(zhì)(基質(zhì)配比為：爐渣、有機(jī)污泥堆肥40%；蘑菇廢料、鋸末、秸稈30%；壤土22%；保水劑3%；緩釋肥5%；基質(zhì)厚度為15cm)中草坪草生長表現(xiàn)最好,耗水量小且生長旺盛,基質(zhì)層重量相對較輕,最適于干旱半干旱區(qū)屋頂綠化建植中草坪栽培基質(zhì)的選用,且起到了廢棄物轉(zhuǎn)化利用的功效；(2)植物選擇方面,從蘭州市常用的園林綠化植物中選用備選植物33種,通過實(shí)地調(diào)查、大田觀測、專家咨詢、層次分析法等方法,綜合選擇出適宜于蘭州市屋頂綠化種植的植物有：天人菊、黑心菊、蜀葵、紅景天等10種綜合性狀表現(xiàn)最優(yōu)的植物,及小麗花、雞冠花、矮牽牛、八寶景天、草地早熟禾等20種綜合性狀表現(xiàn)次優(yōu)的屋頂綠化植物,這些植物均可在蘭州地區(qū)屋頂綠化中推廣應(yīng)用；(3)施工設(shè)計(jì)方面,結(jié)合蘭州市屋頂綠化施工設(shè)計(jì)實(shí)例,分別對屋頂綠化施工技術(shù)中常見的防水、排水、屋頂承重、植物種植、景觀設(shè)計(jì)等問題進(jìn)行全面分析,并首次引入了屋頂綠化新技術(shù)——智能終端控制灌溉系統(tǒng),以期為西北地區(qū)屋頂綠化技術(shù)探索研究開辟新模式。
[Abstract]:Roof greening is a new comprehensive modern greening technology from traditional ground greening to spatial stereoscopic greening. It can not only strive for more greening space, alleviate the contradiction of land use, but also improve the urban ecological environment and adjust the microclimate. Thermal insulation, beautification of the environment, edify people sentiment and other multiple functions. As the capital city of Gansu Province, Lanzhou has a fragile ecological environment and a shortage of urban greening land. In the face of the current problem that the urban greening land is difficult to expand, the implementation of roof greening can effectively increase the green space area. Based on the ecological environment of Lanzhou city and the present situation of roof greening in Lanzhou, this paper studies the planting matrix of roof greening lawn, the selection of planting plants for roof greening, and the new technology of roof greening construction design. The main conclusions are as follows: (1) according to the growth status of turfgrass in different substrates, the ratio of three substrates is as follows: cinder, organic sludge compost 40%, mushroom waste, sawdust, straw 30%; Loam 22m; water retaining agent 3; slow-release fertilizer 5; substrate thickness 15cm) the turf grass has the best growth performance, low water consumption and strong growth, and relatively light substrate weight, which is the most suitable for the selection of turf cultivation substrate in roof greening in arid and semi-arid areas. And played the role of waste conversion and utilization; (2) Plant selection, from the common garden plants in Lanzhou, select 33 alternative plants, through field investigation, field observation, expert consultation, analytic hierarchy process and other methods, The plants that are suitable for planting on the roof of Lanzhou City are: Tianren chrysanthemum, black heart chrysanthemum, hollyhock, Rhodiola, etc., which have the best comprehensive characters, as well as the small lily flower, the cockscomb flower, the petunia, the eight treasure Jingtian, and so on. There are 20 kinds of suboptimal roof greening plants, such as bluegrass, which can be popularized and applied in the roof greening of Lanzhou area. (3) in construction design, combined with the example of roof greening design in Lanzhou City, The common problems of waterproofing, drainage, roof bearing, plant planting and landscape design in the construction technology of roof greening are analyzed respectively, and the new technology of roof greening, intelligent terminal controlled irrigation system, is introduced for the first time. In order to open up a new model for the exploration and research of roof greening technology in Northwest China.
【學(xué)位授予單位】：蘭州大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：S688

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本文編號(hào)：2197136