千岛湖库区不同森林植被空气负离子状况

对千岛湖库区湖面及马尾松林、常绿阔叶林等6种不同森林植被中的空气负离子进行了研究,结果表明:千岛湖库区空气负离子非常丰富,平均为6 238个/cm~3,环境整体对健康非常有利,适合开展以增进健康为目的的高质量森林旅游.河岸林负离子浓度最高达21 624个/cm~3,演替顶级植被常绿阔叶林空气小分子负离子含量是主体森林类型马尾松林的8.91倍.库区空气质量普遍达到很清洁的水平,其中河岸林、常绿阔叶林、库边行道树清洁度最高,CI指数分别达到1 400.2、958.9、273.3.混交林、湖面清洁度也较高,马尾松林、林场场部行道树空气清洁度量低CI指数2.4.空气离子组成分析显示,与水体相比森林环境空气负极性更具有整体性,空气离子单极系数均≤0.13.

Study on Aero-anion Concentration around Different Forest in Thousand-isles Lake Reservoir

Study on aero-anion concentration in 6 different forest communities and water surface in Qiandao reservoir, Zhejiang province showed that aero-anion concentration in the whole reservoir region averaged 6 238/cm~3, indicating good for human health and high quality forest tourism. The result demonstrated that riparian forest had the highest concentration of aero-anion, topped to 21 624/cm~3, while small negative ions in evergreen broad-leaf forest were 8.91 times than that in Pinus massoniana plantations. Air clean index(CI) in riparian forest, evergreen broad-leaf forest and street trees reached 1 400.2, 958.9 and 273.3, while that in P. Massoniana plantation and street trees in office areas was the lowest of 2.4. Ions component analysis indicated that the ion polarity ratio in each forest environment was ≤0.13.