衢州大橘海森林公园空气负离子浓度变化

以空气负离子为指标评价旅游环境质量，对于景区开发建设和游客活动选择具有重要意义。2010年10月至2012年9月，利用空气负氧离子测量仪，对浙江省衢州大橘海省级森林公园旅游环境质量进行了监测，并借助相应的方法对其空气质量作了评价，分析空气负离子浓度与环境因子的关系。结果表明:空气负离子年平均浓度大小顺序为:石梁溪堰坝＞幽静山道＞农家庭院＞柑橘观光园＞村落广场，空气质量评价指数（ICI）值均大于1.0，属于最清洁空气；5个监测样地的空气负离子浓度月间变化规律基本一致，1年之中出现2个峰值，分别为1月和9月；不同季节的负离子浓度变化存有明显差异，夏、秋大于冬、春，夏季最高，春季最低；除2月和3月外，其他月份的空气质量等级均为B以上，空气清洁度较清洁；除2月、3月和5月外可吸入颗粒物（PM10）浓度均低于国家环境空气质量标准的二级标准（150 gm－3），符合居住区的标准；对空气负离子与其他气象因子的相关分析显示，空气负离子与气温、相对湿度显著正相关（P＜0.01），与PM10显著负相关（P＜0.01）。图6表5参12

Air anions concentration variation in Forest Park of Citrus Groves in Quzhou

Evaluating the tourism environmental quality on the basis of aero anion is important to the development of scene spot and helping tourists selecting activities. We measured the environmental quality of the Quzhou Provincial Forest Park of Citrus Groves in Oct.10, 2010 to Spt. 9, 2012 by aero anion measuring instrument, and analyzed the relations between aero-anion concentration and environment factors. The result shows that the aero-anion concentration of Shiliangxi Barrage is the highest and followed by Quite Mountain Road, Courtyard, Citrus Touring and Rural Square，all of which are in the clean air class with the ICI＞1.0. The monthly changing of the aero-anion concentration in the five sample plots is almost the same, with two peak value in January and September, but changing significantly in different seasons, with summer and autumn higher than spring and winter. The air quality grade is above B, except February and March. The concentration of PM10 is below the secondary standard NAAQS（GB 3095－1996）（150 gm－3）, meeting residential standard. A correlation analysis showed an significant （P＜0.01）positive correlation between air anion concentration and temperature and relative humidity, a significant （P＜0.01）negative correlation between air anion concentration and particulate matter（PM10）. ［Ch, 6 fig. 5 tab. 12 ref.］