深圳市园林植物叶片含硫量的特点

对深圳不同地点,116种园林植物叶片含硫量进行了测定,以期为科学地选择抗污、吸污绿化树种提供理论依据。结果表明,叶片含硫量在10mg·m^-3的植物有5种,叶片含硫量在5～10mg·m^-3的植物有12种,说明深圳市园林植物具有吸收硫污染的能力。通过植物叶片含硫量与大气中SO₂关系的比较发现,大红花和簕杜鹃的叶片硫含量与大气SO₂含量呈正相关;九里香的叶片硫含量与大气SO₂含量呈负相关,其它植物叶片中的含硫量与空气中的SO₂含量相关性不明显。植物叶片内含硫量随季节变化而变化,秋季叶片含硫量高于春季。

Sulfur Content of Garden Plant's Leaves in ShenzhenGuangdong

In April 2005 and November 2004, leave sulfer content of 116 garden plant species from 9 sampling sites in Shenzhen City, Guangdong was measured. Among the sampled plants, five species had a higher sulfer content over 10 mg·m^-3, 12 species with a content from 5 to 10 mg·m^-3, sulfer content for other species were lower than 5 mg·m^-3. This result showed that these plants used for garden plantation can absorb sulfer from atmosphere and have a ability to remove sulfer from atmosphere. There is a positive correlation between SO₂ concentration in the air and the sulfur content in the leaves of Hibiscus rosa-sinensis and Bougainvillea spectabilis willd, while a negative relationship between sulfur content in the air and the sulfur content in the leaves of Murraya paniculata. An obvious seasonal dynamics was observed in the sulfur contents of plant leaves, which is higher in early spring than autumn.