【摘要】 基于人体舒适度指数、空气富氧度指数、空气清洁度指数3个单项指标构建城市森林保健功能体系和评价综合指数(UFHI),并给出了评判城市森林保健功能指数的等级标准。通过对春、夏、秋3个季节北宫国家森林公园单向指标及综合保健功能分5个时段进行评价,探讨北宫国家森林公园城市森林的整体保健功能。结果表明:北宫国家森林公园人体感觉舒适的时间秋季最长,其次为夏季,春季最短;空气富氧度夏季明显高于春秋两季,日变化成"W"形分布;空气清洁度亦为夏季明显高于春秋两季,春秋空气负离子含量较低且日变化缓和。城市森林保健功能指数(UFHI)夏季最高,春季次之,秋季最低,春季与秋季指数值差别不明显,3个季节的保健等级均在3级以上。北宫国家森林公园保健功能最佳发挥时段因季节而异,在夏季能为城市居民提供更高的保健效益。更多还原

【Abstract】 The comprehensive evaluation index of urban forest health effects(UFHI) was established based on the human comfort index,air oxygen index and air cleanliness index.Based on the field survey of Beigong National Forest Park,the comprehensive evaluation index method was used to evaluate its urban forest health effects.The results showed that the time of human body feeling comfortable was the longest in autumn,the second was in summer and the worst in spring.The air oxygen index in summer was higher than spring and autumn.The air cleanliness index was also higher than spring and autumn.The air anion content was low and the daily variation was gentlely in spring and autumn.The urban forest health effects index(UFHI) was highest in summer,the next in spring,the lowest was in autumn.There was no obvious difference between the UFHI value of spring and autumn.The UFHI were in grade three above in three seasons.The best time of health effects in Beigong National Forest Park was varies in different seasons and more health benefits can be provide in summer for urban residents.更多还原