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见过没有根、不需要水培、不需要土栽、悬挂在空中就能自由生长的植物吗？这就是空气凤梨，顾名思义，光“吃”空气就能长大。空气凤梨（Tillandsia）又叫气生铁兰、空气草、老人须，凤梨科铁兰属植物。 相似文献
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最流行的植物时尚——空气凤梨的装饰应用 总被引：1，自引：0，他引：1
认识空气凤梨
空气凤梨（Tillandsia）是一种真正的无需土壤就可在空气中自由生长的“植物精灵”。它们原生于中南美洲热带或亚热带地区，为凤梨科铁兰属多年生气生或附生草本，约有550多个种及90多个变种，是凤梨科植物中种群最为多样的一族。 相似文献
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采天地之灵气 撷日月之精华——神奇的空气凤梨 总被引：3，自引：0，他引：3
在植物王国中，有一种奇特而优美的花卉，它不需要栽种在泥土中，放在空气中就能正常生长，这种神奇的植物叫“空气凤梨”，早在100多年前就有人栽培观赏了，但直到上世纪80年代才在国外广泛流行， 相似文献
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在植物王国中,有一种奇特而优美的花卉,它不需要栽种在泥土中,放在空气中就能正常生长,这种神奇的植物叫“空气凤梨”,早在100多年前就有人栽培观赏了,但直到上世纪80年代才在国外广泛流行,我国则是近几年才开始引种的。空气凤梨品种繁多,形态各异,既能赏叶,又可观花,具有装饰效果好、适应性强等特点,不用泥土即可生长茂盛,并能绽放出鲜艳的花朵,可粘在古树桩、假山石、墙壁上,放在竹篮里、贝壳上,也可将其吊挂起来,点缀居室、客厅、阳台等处,时尚清新,富有大自然野趣。 相似文献
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Particulate matter (PM) is an important air pollutant because of its adverse impacts towards human health. The existing and conventional methods of PMs monitoring are found to be inadequate in feasibility, which paved the way of magnetic biomonitoring approach. The magnetic measurement carried through the plant leaves is useful means in assessing the PM pollution. Plant species are found to be an effective biomonitors and may act as natural filters by trapping and retaining the PM on their leaf surfaces. Therefore, the aim of this communication is to demonstrate the magnetic properties [magnetic susceptibility (χ), anhysteretic remanent magnetization (ARM) and saturation isothermal remanent magnetization (SIRM)] of two roadside plant leaves (Hibiscus rosa-sinensis and Mangifera indica) at four spatially distant sites. The study measures and compares the capabilities of these plants to accumulate and retain the PMs. The study also assesses the PM pollution at selected sites and establishes the relationship between magnetic properties and PM in the city of an Indo-Burma hot spot region. The results indicated a significant correlation between the concentration of ambient PM and magnetic measurement (χ, ARM and SIRM) of both the roadside plant leaves. Similarly, reasonably good correlations are obtained between magnetic parameters (χ, ARM and SIRM) and Fe content in PMs. Present study is, perhaps, a novel contribution in the area of bio-magnetic monitoring studied with several magnetic parameters viz., χ, ARM and SIRM. Results indicated that the bio-magnetic monitoring is applied for environmental geomagnetism which act as proxy for ambient PM pollution and further employed as an eco-sustainable tool for environmental management in urban and peri-urban regions. 相似文献
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Urban trees perform a number of ecosystem services including air pollution removal, carbon sequestration, cooling air temperatures and providing aesthetic beauty to the urban landscape. Trees remove air pollution by intercepting particulate matter on plant surfaces and absorbing gaseous pollutants through the leaf stomata. Computer simulations with local environmental data reveal that trees in 86 Canadian cities removed 16,500 tonnes (t) of air pollution in 2010 (range: 7500–21,100 t), with human health effects valued at 227.2 million Canadian dollars (range: $52.5–402.6 million). Annual pollution removal varied among cities and ranged up to 1740 t in Vancouver, British Columbia. Overall health impacts included the avoidance of 30 incidences of human mortality (range: 7–54) and 22,000 incidences of acute respiratory symptoms (range: 7900–31,100) across these cities. 相似文献
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Elisa Pellegrini Alessandra Campanella Giacomo Lorenzini Cristina Nali 《Urban Forestry & Urban Greening》2014,13(4):800-805
The wide diffusion of tropospheric ozone is a major environmental problem, in urban area as well as in rural and remote localities. Its increasing man-related levels are connected to severe impacts on human life and welfare, in terms of adverse health effects, damage to manufacts and injury to plants. Biological monitoring is a powerful tool for filling the gap between the causes and the effects of environmental toxins, as bioindication agents assess in an easy-to-detect fashion the effects of pollution on (selected) biota. A project was launched in 2012 to involve some 190 students (ages 11–16) from three schools in Central Italy in biodetection of ozone effects with the hypersensitive plant Nicotiana tabacum Bel-W3. The project also involved teachers and families of the pupils. Results implied the reading of 12,000 biological data (ozone injury on cotyledons) and were fortified by data captured by four automatic analyzers (1300 raw data of hourly means). Biological and chemical data compared favorably and were treated with geostatistical methods; results are exposed in the form of cartographic restitutions. Under the guidance of their teachers, the pupils had several opportunities to practice with many basic and applied study areas and disciplines and were initiated into the scientific method in a simple and absorbing manner. Though primarily an educational exercise, the survey provided sound research elements and the picture of pollution that emerged has increased the knowledge of air quality in the area. Biomonitoring is confirmed to be a powerful tool to involve young people in environmental topics. 相似文献
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从培养基的配方、微量元素的添加、工业废料的利用、植物生长调节剂的调节、农药的应用、环境污染和辐照因素等方面,综合论述了近几年来人们对平菇菌丝体生长代谢影响因素的研究进展。 相似文献
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Morrow RC Tibbitts TW 《HortScience : a publication of the American Society for Horticultural Science》1987,22(1):148-151
A system was developed for subjecting plants to elevated air ion levels. This system consisted of a rectangular Plexiglas chamber lined with a Faraday cage. Air ions were generated by corona discharge from frayed stainless steel fibers placed at one end of the chamber. This source was capable of producing varying levels of either positive or negative air ions. During plant exposures, environmental conditions were controlled by operating the unit in a growth chamber. 相似文献
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研究天津市园林植物病虫害的无公害防治技术,比较分析无公害综合防治技术对保护本市生态环境所发挥的重要作用及所产生的生态环境效益,提出进行园林植物保护的无公害防治的系列技术与措施。此成果的应用推广,进一步推动本市园林病虫害的无公害可持续防治,并为天津市城市生态环境的改善做出重要贡献。 相似文献
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Urban vegetation has the potential to improve air quality as it promotes pollutant deposition and retention. Urban air quality models often include the effect vegetation have on pollution dispersion, however, processes involved in pollution removal by vegetation are often excluded or simplified and does not consider different vegetation characteristics. In this systematic review, we analyze the influence of the large interspecies variation in vegetation characteristics to identify the key factors affecting the removal of the major urban pollutants, particulate matter (PM) and nitrogen dioxide (NO2) from the air through vegetation deposition. The aim is to identify key processes needed to represent vegetation characteristics in urban air quality modelling assessments.We show that PM is mainly deposited to the leaf surface, and thus representation of characteristics affecting the aerodynamics from canopy down to leaf surface are important, such as branch/shoot complexity and leaf size, leaf surface roughness and hairiness. In addition, characteristics affecting PM retention capacity, resuspension and wash-off, include leaf surface roughness, hairiness and wax content. NO2 is mainly deposited through stomatal uptake, and thus stomatal conductance and its responses to environmental conditions are key factors. These include response to solar radiation, vapour pressure deficit and soil moisture.Representation of these vegetation characteristics in urban air quality models could greatly improve our ability to optimize the type and species of urban vegetation from an air quality perspective. 相似文献