植物叶钾离子渗出量在大气质量评价中的应用——Ⅱ.利用叶片K^+渗出量和含硫量监测大气SO_2污染的比较研究

K^+ EFFLUX FROM PLANT LEAVES AND ITS APPLICATION IN THE ASSESSMENT OF ATMOSPHERIC POLLUTION Ⅱ. Evaluation of Atmospheric S0_2 Pollution by the K^+ Efflux from Plant Leaves and Sulphur Content

以加拿大杨(Populus Canadensis)为材料,经熏气证实,SO_2浓度与叶片含硫量及K^+渗出量之间呈密切正相关。按污染指数(IPC)法和统计法(μ+s)划分四个污染等级,用以评价沈阳市SO_2污染,K^+渗出量法较叶片含硫量法更接近理化监测值。按95%置信度绘制预测图,经精度分析,K^+渗出量法较叶片含硫量法更为精确。

K+ efflux from plant leaves was investigated and found to be positively correlated to the atmospheric SO2 concentration. The air pollution of Shenyang Gity evaluated using the K+ efflux technique, as well as the other methods of the index of pollution (IPC) and classical statistical parameters, among which, the results using K+ efflux methods appeared to be the most close to the results of field monitoring.