不同树种对空气负离子水平的影响

目的]探索不同树种林下的空气负离子水平，以期为城市绿地的规划与建设提供参考。方法]选择红皮云杉、樟子松、白桦、杏林作为研究对象，对各树种林下的空气负离子浓度和空气质量进行比较研究。结果]红皮云杉和樟子松林下的空气负离子浓度差异不显著，其他树种间的空气负离子浓度差异极显著。红皮云杉林下空气负离子浓度最高，平均值可达689个／cm3，空气质量较好。杏林下空气负离子浓度明显低于红皮云杉、樟子松和白桦。结论]不同树种林下的空气负离子浓度和空气质量不同，针叶林下的空气负离子浓度和空气质量要好于阔叶林。

Effects of Different Tree Species on Air Negative Ions Concentration

Objective] The study aimed to explore the air negative ions concentration in different tree species forests,and provided a reference for planning and construction in urban greenbelt.Method] Choosing Korean spruce forest,Mongolian pine forest,White birch forest and Apricot forest as the objectives,the air negative ions concentration and air quality in different tree species forests were compared.Result] The air negative ions concentration had no significant difference between Korean spruce and Mongolian p...