大气污染影响下凯里植物氮、硫含量分析

对大气污染影响下凯里植物氮、硫质量分数进行测定分析。结果表明:植物的氮质量分数为0.8%～2.8%,平均值为1.5%;硫质量分数为0.4%～1.4%,平均值为0.8%。植物的氮、硫质量分数都高于对照点植物,为对照点植物的1.4倍、1.9倍,表明该区植物已受到了大气污染的影响。不同植物间的氮、硫质量分数差异达到3.5倍和2.5倍。不同类型植物的氮、硫质量分数也存在差异,氮质量分数中:藤本>草本>灌木>乔木,硫质量分数中:藤本>草本>乔木>灌木;落叶植物的氮、硫质量分数>常绿植物的氮、硫质量分数。不同研究点植物的氮、硫质量分数存在差异,均表现为:玻璃厂>火电厂>水泥厂。

Analysis on Nitrogen and Sulphur Contents in Plant Leaves under Air Pollution in Kaili, Guizhou

Nitrogen and sulphur contents in plants from Kaili under air pollution were monitored and analyzed.The results showed that the nitrogen and sulphur contents in plants in Kaili ranged from 0.8% to 2.8% and from 0.4% to 1.4% with an average of 1.5% and 0.8%,respectively.Both nitrogen and sulphur contents in plants from polluted sites were higher than those in plants from clean air sites（1.4 and 1.9 times as high as those in plants from clean air sites） to show that plants in Kaili area were polluted.The differences of nitrogen and sulphur contents in different plants were 3.5 and 2.5 times,respectively.The nitrogen and sulphur contents differed in different type plants.The nitrogen and sulphur contents in different type plants decreased as follows： vineherb shrubtree and vineherbtreeshrub.Nitrogen and sulphur contents in deciduous plants were higher than those in evergreen plants.The nitrogen and sulphur contents in plants from different sites were different and decreased as follows： glassworkpower plantcement work.