城市居民区圆柏花粉浓度的时空变化及其影响因素  

Diurnal and Spatial Variation of Pollen Concentration of Sabina Chinensis and Affacting Factors in Urban Residential Area

作　　者：侯晓静[1] 王成[1] 李伟[1] 陈玉娟[1] 郭二果[1] 

机构地区：[1]中国林业科学院林业研究所国家林业局森林培育重点实验室

出　　处：《城市环境与城市生态》2008年第4期33-36,共4页Urban Environment & Urban Ecology

基　　金：国家科技部科研院所社会公益研究专项(2004DIB1J031);国家十一五科技支撑计划重大项目课题(2006BAD03A06)

摘　　要：通过对散粉期间居民区建筑不同位置、不同高度的圆柏花粉浓度进行了全天昼夜监测。结果表明居民楼群环境对圆柏花粉的时空分布有一定的影响,具体变化规律为:1)城市居民区内圆柏花粉浓度日变化为双峰单谷型,正午前后是首次高峰期,平均浓度为25粒/(h.cm2),凌晨左右为次高峰期,谷值出现在下午18:00时到人们晚上休息之前,平均浓度为2粒/(h.cm2)。2)总体上城市楼群边缘圆柏花粉浓度垂直分布梯度为1.5 m>13.5 m>7.5 m,楼群中心圆柏花粉浓度垂直变化梯度为13.5 m>7.5 m>1.5 m。但是不同时段内,由于主导因素不同,花粉浓度的垂直分布不尽一致。最后,还分析了气象要素对圆柏花粉浓度的影响。Pollen concentrations of Sabina Chinensis were observed day and night in urban residential area in the dispersion period,and the observation was taken at different sites and in different heights.The results showed that buildings had some influences on the diurnal and spatial variation of pollen of Sabina Chinensis,and the variation rules were as follows: 1)In general,diurnal variation curve of pollen concentration in the residential area showed two peaks and one vale.The first peak presented in the midday with the mean pollen concentration of 25 grain/(h·cm2),and the second peak presented around the wee hours,while the vale happened from 18:00 P.M.to sleepping time,and the pollen concentration was 2 grain/(h·cm2).2)At the edge of buildings the vertical distribution of the pollen concentration showed 1.5m>13.5m>7.5m,and among the buildings,the vertical distribution showed 13.5m>7.5m>1.5m.However,the vertical distribution varied with time because of different major influencing factors.In the end,the influence of meteorological factors on pollen concentration of Sabina Chinensis was discussed.

关 键 词：圆柏 花粉浓度 时空变化 居民区 

分 类 号：X831[环境科学与工程—环境工程]