期刊论文

Tian, D.

中文

生态学报

1000-0933

2010

30

14

3700-3706

30771700:国家自然科学基金 30870455:国家自然科学基金 30571487:国家自然科学基金 06FJ3083:湖南省重点实验室项目 2007FJ4046:湖南省重点实验室项目

本校为第一且通讯机构

用气质联用仪测定了长沙市樟树（Cinnamomu camphora）、广玉兰（Magnolia grandiflora）、桂花（Opsmanthus fragrans）和红檵木（Redrlowered loropetalum）4个主要绿化树种叶片中PAHs含量,同时测定了叶片的气孔密度、气孔长宽比、叶片的宽长比和叶面积等叶面结构特征值,探讨了叶面结构与叶片中PAHs含量的关系。结果表明：红檵木叶片的PAHs含量最高,为11.13mg·kg^-1,16种PAHs在4树种叶片中均有不同程度的检出,其中以3环和4环为主,菲的浓度最高。除桂花外,在气温较低的秋冬季节,其余3种植物叶片气孔密度大PAHs含量高。叶面宽长比、气孔长宽比均与叶片PAHs含量呈极显著正相关,而叶面积与PAHs含...

Polycyclic Aromatic Hydrocarbons (PAHs) are a large group of chemicals that mainly produced by incomplete combustion of coal, gasoline, wood, garbage or other organic materials. PAHs consist of a number of toxic compounds which have great harmful effects on plants, animals and human health. It has been commonly recognized that trees have great potential for the scavenging, storage and purification of relatively large amounts of PAHs. Accumulation of PAHs in vegetation depends on the properties of the particular PAHs as well as on the properties...