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| 兰州市大气污染对绿化树种叶绿素含量的影响 |
| Effectsof Air Pollution on ChlorophyllContentsin Urban Greening Tree Speciesin Lanzhou |
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| DOI： |
| 中文关键词: 绿化树种 叶绿素含量 空气污染 兰州市 |
| 英文关键词: Greeningtree species Chlorophyllcontent Airpollution Lanzhou |
| 基金项目:甘肃省教育厅基金资助项目 (0504-03); 兰州交通大学高校“青蓝工程”人才基金资助项目 |
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| 中文摘要: |
| 为了筛选出兰州市大气污染的抗性树种和敏感监测树种, 对树种的叶绿素a 、叶绿素b含量进行了测定, 运用spss11.5 软件分析。研究发现: 同一绿化树种在不同功能区的叶绿素含量不同, 存在极显著性的差异。随着功能区污染程度的加深 , 绿化树种的叶绿素含量 ( ω a 、ω b 、ω a + ω b ) 呈现减小的趋势 , 但叶绿素 ω a / ω b 值却呈现增大的趋势。 绿化树种抗污染能力为 : 杨树 > 小叶黄杨 > 椿树 > 国槐 > 圆柏 , 兰州市主要功能区的污染程度为 : 兰炼厂区 > 兰化 |
| 英文摘要: |
| In orderto screen outresistantplantspeciesand sensitive monitoring plantspecies, five major urban greeningtreespeciesin differentpolluted areaswerechosen, andthechlorophylla, b contentsweretested and data wasanalyzed by spss11.5 software. The research indicated thatthe chlorophyllcontentsofgreening treesin differentpollution areasvaried from each otherand had remarkable significance. The chlorophyllcontents ( ω a 、ω b 、ω a + ω b ) ofeach greeningtreespeciesdecreased significantlywith theincreasingpollution degree ofinvestigated regions, butthe numericalvalueofchlorophylla, b showedtheoppositetendency. Thepotential pollution tolerance ability ofdifferentgreeningtree speciesappearedin theorderof: Polar, Buxus microphylla, Ailanthusaltissima, Sorphorajaponica, Sabina chinensis. Totally,thepollution ofinvestigated regionscould be ranked as: The Oil Refining Plant, The ChemicalPlant, The Rubber Plant, Xiguan station, Xizhan station, LanZhou Jiaotong University, XinglongshanMountain. |
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