杭州景观疗养地空气负离子观测分析

Observation of the anion density of air at sanic district of Hangzhou

杭州属亚热带季风气候，丁家山位于杭州风景区中心，观察表明该地年平均气温１７．２℃，平均风速５．６ｍ／ｓｅｃ，平均湿度６６．２％，平均空气负离子浓度为６７２个／ｃｍ３。

Hang Zhou has a subtropical monsoon climat. Ding jia hill is the centre of Hang zhou scenic district. The average temperature is 17.2℃. The average wind velocity is 5.6m/sec, the humidity is 66.2%, the anion density of air is 672/*d.