寨场山森林公园空气负离子浓度的时空变化特征

森林公园中的空气负离子能够有效缓解现代人因长期待在室内导致的“空调综合症”，对森林公园的规划发展亦至关重要。对寨场山森林公园空气负离子浓度的时空变化进行分析，结果表明:1）森林公园中空气负离子浓度夏秋高于冬春，夏季最高，冬季最低。一天当中空气负离子浓度上午开始下降，14:00-16:00最低，随后回升。2）森林公园中在地势较低且植物生长较好的地方以及在不同水体周围，空气负离子浓度更优。3）公园中不同绿地类型以及不同水体中空气清洁度从高到低的次序分别为:乔灌草>阔叶乔木>灌木丛>草坪，瀑布>河流>溪流>水库>小湿地。

Spatio-temporal Variation Characteristics of Negative Air Ion Concentrations in Zhaichangshan Forest Park

The negative air ions in the forest park can effectively alleviate "air conditioning syndrome" of modern people caused by long-time staying indoors. It is important for planning and development of forest park. In this paper, spatio-temporal changes of negative air ion concentrations in Zhaichangshan Forest Park were analyzed. The results showed that: 1) over a year, the maximum concentrations of negative air ions in forest park appeared in summer and the minimum in winter, the concentrations in summer and fall were higher than those in winter and spring. Over a day, the concentrations started to decrease in the morning, minimum values appeared at 14:00 to 16:00, after then, the concentrations started to increase. 2) Within the forest park, the concentrations of negative air ions were higher in low-lying place with well growing plants or around the water. 3) The air quality in different types of green spaces and waters decreased from high to low: arbor-shrub-herb>broadleaf-arbor>shrub>lawn,waterfall>river>stream>reservoir>small wetland. On the base of the result, some suggestions on the designing of forestry healthcare facilities were put forward.