云南乡土绿化树种对HCl和HF气体的反应

采用人工模拟熏气办法，研究13种乡土绿化树种对城市中HCl和HF气体的反应。云南红豆杉、长梗润楠、翠柏、麻栗坡含笑、南亚含笑、脉叶虎皮楠对HCl气体的抗性弱。HCl浓度为1.0 mg.m-3时，滇润楠、云南拟单性木兰、云南含笑、鸡嗉子树种具有较强抗性及净化能力，净化量依次为141.8、283.6、354.5、425.4 mg.kg-1和1 063.5 mg.kg-1。HF浓度为1.0 mg.m-3时，山玉兰、灯台树、川滇三角枫叶片F净化量依次为0.9、1.9 mg.kg-1和4.9 mg.kg-1。结果表明，滇润楠、鸡嗉子、山玉兰、云南拟单性木兰、云南含笑、灯台树等树种对HCl气体具有较强的抗性和净化能力，翠柏、云南红豆杉、山玉兰、灯台树、川滇三角枫等树种对HF气体具有一定的抗性和净化能力，试验结果可以为乡土绿化树种的选择和应用提供科学依据。西北林学院学报21卷第5期张学星等云南乡土绿化树种对HCl和HF气体的反应*

Absorption and Purification of Native Ornamental Trees in Yunnan to HCl and HF Pollution

The responses and purified effects of 13 native tree species occurring in Yunnan on HCl and HF pollution were investigated by artificial smoking.Six species,including Taxus yunnanensis,Machilus longipedicllata,Calocedrus macroleips,Michelia chartacea,M.doltsopa and Daphniphyllum paxianum exhibited weak resistances to HCl,while M.yunnanensis,Parakmetia nitida,M.yunnanensis and Dendrobenthamia capita exhibited strong resistances and purification capacity to HCl.At the concentration of 1.0 mg m~(-3) HCl,the purification amount of M.yunnanensis,P.nitida,M.yunnanensis and D.capita were141.8 mg.kg~(-1),283.6 mg.kg~(-1),354.5 mg.kg~(-1),425.4 mg.kg~(-1) and 1063.5 mg.kg~(-1) respectively.At HF 1.0 mg m~(-3), the purification amount of M.delavayii,C.controversa and A.paxii were 0.9 mg.kg~(-1),1.9 mg.kg~(-1) and 4.9 mg.kg~(-1),respectively.Basis on the experimental data,M.yunnanensis,M.delavayii,P.nitida,M.yunnanensis,D.capita,C.controversa and A.paxii showed stronger resistances to HCl and HF gases than those of other species.The results provide useful information for the selection and utilization of native ornamental trees.