陶瓷工业污染区41种植物的硫含量特征

Sulphur accumulation of 41 plants nearby the ceramic industry area

为提高酸污染地区植物净化吸收大气S污染物的能力,研究了广东西樵山41种主要植物的S含量特征。结果表明:(1)41种植物的叶片或地上部分S含量介于1.81～16.47mg·g^(-1)平均值为4.00mg·g^(-1),高于我国其他地区植物S含量的平均水平。马尾松(Pinus massoniana)和荷木(Schima superba)的叶片S含量是大气相对清洁区鼎湖山的2～3倍。(2)华山矾(Symplocos chinensis)、银柴(Aporosa dioica)和光叶山矾(Symplocos lancifolia)和山胡椒(Lindera glauca)的叶片S含量最高,分别为16.47、12.42、11.31和6.68mg·g^(-1),是优良的S污染净化植物。(3)同科植物具有相近的S富集能力,目前常用作绿化植物的3种山矾科植物均有较强的大气污染抗性和高S含量特征,预示着山矾科可能存在其他一些优良的S污染净化种类,有待进一步的研究发掘。

To improve the purification capacity of sulphur by vegetation in the acid polluted areas, we study the characteristics of sulphuraccumulation in 41 plant species in the Xiqiao Mountain that is located at ceramic industry areas in Foshan. The results showed that the sulphur content in leaves or aboveground part of 41 plant species was in the range of 1.81-16.47 mg·g^-1, with the mean of 4.00 mg·g^-l, which was higher than the average sulphur level of plants in other regions of China. Leaf sulphur contents ofPinus massoniana and Schima superba were 2-3 times as those in the relatively clean site, Dinghu Mountain. Among the sampled species, leaves of Symplocos chinensim, Aporosa dioica, Symplocos lancifolia and Lindera glauca had the highest sulfur contents, which were 16.47, 12.42, 11.31 and 6.68 mg·g^-l, respectively. We also observed that the plant species within the same family of Symplocos showed a consistently excellent capacity of sulphur accumulation, suggesting there might consist of some other species in this family having good potentials in sulphur accumulation, which needs further studies.