| 摘要: |
| 利用北京市朝阳区国家气象观测站数据，利用平均气温、积温等气象数据分析，得出北京市
朝阳区平均飘絮开始日期为 4 月 18 日，最早为 4 月 5 日（2021 年），最晚为 4 月 30 日（1984 年），飘絮
开始日期与平均气温存在着负相关关系。采用因子加权法，根据气象因子及其它因子等 7 项影响因素，
设计飞絮气象指数，开展杨柳飞絮气象预报服务。预报结果与实景观测进行对比，预报误差为两天。利
用归一化植被指数及易燃易爆场所分布情况，划定飞絮引发引燃易爆场所火灾风险区域，朝阳区风险较
高的区域有 2 处，分别为中部偏北的酒仙桥及东部管庄、高碑店区域。 |
| 关键词: 杨柳飞絮 气象指数 风险区划 |
| DOI： |
| 分类号: |
| 基金项目:北京市朝阳区科技计划项目（项目编号：CYSF2015） |
|
| Design and Application of Poplar Catkin Meteorological Index in Beijing |
|
daijian1, CHENG Yuexing1, ZHAN Junjie2
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1.Beijing Chaoyang district Meteorological Service;2.Beijing Shunyi District Meteorological Service
|
| Abstract: |
| In this paper, by using the data from the Beijing Chaoyang district national meteorological
service, we analysed the relationship between the poplar catkin and meteorological conditions. By useing
weighted factortechnique method, according to the meteorological factors and other factors, we designed poplar
catkin meteorological index and forecast when poplar catkin began. According to the normalized difference
vegetation index (NDVI) and the distribution of inflammable and explosive sites, the fire risk areas of flying catkin
and explosive sites were defined. There were two high risk areas in Chaoyang district, which were Jiuxianqiao in
the north and Guanzhuang , Gaobeidian in the east. This research can providing reference for relevant departments
to control poplar catkin and prevent fire risks. |
| Key words: poplar catkin meteorological index risk division |
