北京郊区蒿属植物花粉浓度时空变化规律  

Temporal and Spatial Changes of Airborne Pollen Concentration of Artemisia in the Suburbs of Beijing

作　　者：侯晓静[1] 王成[1] 郄光发[1] 王艳英[2] 

机构地区：[1]中国林业科学研究院林业研究所,北京100091 [2]北京林业大学

出　　处：《东北林业大学学报》2010年第4期77-79,共3页Journal of Northeast Forestry University

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(2006BAD03A06)

摘　　要：采用重力法研究典型天气情况下城市郊区空气中蒿属花粉的时空变化规律,初步结论:1d内上午至中午时段蒿属花粉浓度较高,蒿属植物的生理散粉时段为早6:00—8:00,下午16:00之后到凌晨4:00之间蒿属花粉浓度较低且无明显变化。受花粉来源的影响,花粉源中心花粉浓度呈显著的单峰型规律,散粉时段浓度最高;非花粉源地区,气象要素影响明显,中午前后花粉浓度较高。垂直分布方面,花粉源中心蒿属花粉在1.5m及以下高度上的花粉分布较多;非花粉源地区在3m以上分布较多。垂直分布差异主要表现在上午散粉时段,下午14:00时之后蒿属花粉的垂直分布逐渐均匀。The gravitational method was used to study the temporal and spatial changes of airborne Artemisia pollen concentration in the suburbs of Beijing. Results showed that the pollen concentration was higher in the morning and at noon. The peak of Artemisia pollen emission always appeared between 06：00-08：00am, but pollen concentration was low and no obvious changes could be found between 16：00 and 04：00. The change in pollen concentration in the centre of the pollen source area could be described by a single-peak curve due to air flow, and the pollen concentration was the highest during the pollen emission period. In the non-pollen resource area, pollen concentration was the highest before and after noon due to the effect of meteorological factors. In the vertical distribution, Artemisia pollen concentration was high at or below 1.5m in the center of pollen source and at or above 3m in non-pollen source area. The difference in the vertical distribution of pollen concentrations mainly appeared in the morning during the pollen emission period, and it gradually tended to disappear after 2：00 o＇clock in the afternoon.

关 键 词：蒿属 花粉浓度 日变化 垂直变化 

分 类 号：X503[环境科学与工程—环境工程]