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中文摘要：
分别对沈阳市区和远郊的油松林内负离子浓度进行观测，结果表明，远郊油松林内的负离子浓度高于市区，空气质量方面，远郊油松林的空气质量好于市区。对5种群落内的负离子浓度进行研究，结果表明，5种参试群落内的负离子浓度由高到低依次是油松、樟子松、落叶松、银白杨、白三叶。
英文摘要：
The negative air ion concentrations of Pinustabulaeformis forest in city centerand outer suburbs in Shenyang were observed. Theresuhs showed that the negative ion concentration in outer suburbs was higher than that in city center. The air quality of Pinustabulaeformis forestin outer suburbs was better than that in city center. The negative ion concentrations for five plantcommunities were compared.The result showed that negativeair ion concentration was in the order of Pinustabulaeformis〉Pinussylvestris〉Larixolge nsis〉populusalba〉 trifoliumrepens.
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