| 昆明市区18种常见绿化树种叶片重金属富集特征 |
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| 引用本文： | 杨淏舟,李艳梅,陈奇伯,孙应都.昆明市区18种常见绿化树种叶片重金属富集特征[J].福建农林大学学报(自然科学版),2017,46(5). |
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| 作者姓名： | 杨淏舟 李艳梅 陈奇伯 孙应都 |
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| 作者单位： | 1. 西南林业大学环境科学与工程学院,云南 昆明650224;云南玉溪森林生态系统国家定位观测研究站,云南 昆明650224;2. 西南林业大学环境科学与工程学院,云南 昆明,650224 |
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| 基金项目： | 国家林业局林业公益性行业科研专项，云南省高校优势特色重点学科(生态学)建设项目，西南林业大学科学研究基金面上项目 |
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| 摘 要： | 以昆明市主城区18种常见绿化树种为研究对象,测定了叶片滞尘量、叶片和叶面尘重金属含量,探究了植物叶片滞尘量与叶片重金属含量的相关性,探讨了不同树种叶片对重金属元素的富集能力.结果表明:昆明主城区18种绿化树种叶面尘重金属含量与叶片重金属含量相关性极显著(P0.01),相关系数均达到0.6以上;叶片中重金属含量与叶片滞尘量均呈三次多项式关系,叶片内Cu、Pb、Zn浓度与叶片滞尘量相关性较强,R2值分别达到0.811、0.755、0.731;不同绿化树种的叶片对大气重金属的富集能力存在差异,其中龙柏(Sabina chinensis)对Cd、As、Pb、Zn富集能力较强,对Ni、Cu富集能力最强的分别是天竺桂(Cinnamomum japonicum)、杜鹃(Rhododendron pulchrum),而香樟(Cinnamomum camphora)叶片对各重金属元素的富集能力均较弱.
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| 关 键 词： | 昆明 绿化树种 滞尘 重金属 相关性分析 |
Enrichment characteristics of heavy metals in leaves of 18 species of common greening trees in Kunming |
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| YANG Haozhou,LI Yanmei,CHEN Qibo,SUN Yingdu.Enrichment characteristics of heavy metals in leaves of 18 species of common greening trees in Kunming[J].Journal of Fujian Agricultural and Forestry University,2017,46(5). |
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| Authors: | YANG Haozhou LI Yanmei CHEN Qibo SUN Yingdu |
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| Abstract: | To explore the correlation between heavy metal in leaf and foliar dust, heavy metal contents on leaves of 18 greening tree species in main urban areas in Kunming were determined, together with heavy metal accumulation capacity of those species. Results showed that heavy metals levels in foliar dust of the 18 species were significantly correlated with heavy metals contents in leaves ( P<0.01) , with all correlation coefficients being over 0.6. According to cubic polynomial relationship between heavy metal level in leaf and foliar dust content, Cu, Pb, Zn contents were more strongly correlated with foliar dust content than other elements, with R2 values being 0.811, 0.755, 0.731, respectively. Accumulation abilities of heavy metals in leaves varied among species. Enrichment abilities of Cd, As, Pb and Zn for Sabina chinensis leaf were stronger, while Cinnamomum japonicum and Rhododendron pulchrum were excellent in absorbing Ni and Cu. However, Cinnamomum camphora leaf was generally weak in absorbing various heavy metals. |
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| Keywords: | Kunming greening tree species dust heavy metals correlation analysis |
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