南平市园林绿化植物抗酸雨能力的研究

将南方常见的18种园林绿化植物置于不同的pH值酸雨条件下进行模拟酸雨试验,结果表明.1)不同浓度的酸雨对植物的影响不同,表现为随着pH值降低植物的伤害程度越大,但18种园林绿化植物对pH3.5以上的酸雨具有较强的抗性.2)18种园林绿化植物对酸雨抗性按强弱顺序依次为构骨、海桐、柳杉、竹柏、短叶罗汉松、棕榈、佛肚竹、紫玉兰、桂花、羊蹄甲、含笑、云南黄素馨、沿阶草、鸡爪槭、马缨丹、杜鹃、石榴、九里香.3)18种园林绿化植物受到酸雨危害其表现的症状变化规律性不同,有些植物受害变化急剧,如含笑、棕榈、杜鹃;有些植物在处理初期受害比较轻,但经一定的时间后伤害程度一下变得急剧,如紫玉兰;有些是一下子伤害到较大程度,如马缨丹、沿阶草、九里香、羊蹄甲、云南黄素馨、石榴;有些植物受害变化缓慢,过较长时间才有症状,抗性较强,如构骨、海桐、竹柏等.

Study on the Anti-acid rain Ability of Landscape Plants in Nanping

Simulated experiments were made for 18 common gardens plants of southern China under the condition of different pH The results show that: 1) The effects caused by acid rain of different concentration on different species were different The lower the pH is,the more serious damage it will causeBut these species have better fastness against the acid rain of above pH352) According to their fastness the order is:Ilex cornuta>Pittpsporum tobira>Cryptomeria \{fortune>\}Podocarpus nagi>Podocarpus macrophyllus>Trachycarpus fortunei>Bambusa ventricosa>Magnolia liliflora Desr>Osmanthus fragrans>Bauhinia purpure >Michelia figo>Jasminum nudiflorum>Ophiopogon bodinieri Levl>Acer palmatum>Lantana camara>Rhododendron simsii>Punica grannatum>Murraya paniculata 3) The rules of symptoms of the injured species are different Some species change dramatically,such as Michelia figo,Rhododendron simsii Podocarpus macrophyllus Some species such as Magnolia liliflora Desr show a little symptom at first,but after some time,they become worse Some species,for example Jasminum nudiflorum,Lantana camara L.injured,Murraya paniculata,Bauhinia purpurea,Ophiopogon bodinieri Levl damage to a large extend in short time But to the species of Ilex cornuta, Pittpsporum tobira,Podocarpus nagiagrans,the changes are very slow and the symptoms will be shown after a long time.