摘要
为探究冬、春两季不同植物群落的不同垂直高度处PM_(2.5)浓度的变化,运用垂直梯度法对北京奥林匹克森林公园碳通量塔、鹫峰国家森林公园气象观测塔及对照点(北京林业大学校内)共3处样地进行研究。结果表明:春季样地的PM_(2.5)浓度值呈现为冠层以上(塔上部,12 m处)>冠层(塔中部,9 m处)>冠层以下、地面以上(塔下部); PM_(2.5)浓度日变化基本呈现06∶00—10∶00早上高峰,10∶00—14∶00降低,18∶00—22∶00又呈现出升高的"倒N"型的变化规律;鹫峰国家森林公园气象观测塔3层PM_(2.5)浓度值表现为塔上层>塔中层>塔下层; 3处地点同一高度处的PM_(2.5)浓度值表现为北京林业大学>奥林匹克森林公园>鹫峰国家森林公园; 3处地点的PM_(2.5)值为冬季>春季。
In order to explore the changes in PM 2.5 concentration in different vertical heights of different plant communities in winter and spring,the vertical gradient method was applied in three sample plots including the Beijing Olympic Forest Park carbon flux tower,the Jiufeng National Forest Park meteorological observation tower and Beijing Forestry University which was taken as a control point for research.The results show that the concentration of PM 2.5 in the plots varied in different vertical heights,i.e.,above the canopy(above the tower,12m)>the canopy(the middle of the tower,9m)>below the canopy,above the ground(under the tower)in spring.The daily change of PM 2.5 concentration basically showed the shape of“inverted N”,which went up to the peak from 06∶00 to 10∶00 in the morning,the decrease from 10∶00 to 14∶00,and the increase from 18∶00 to 22∶00.The concentration of PM 2.5 at the three layers in the Jiufeng National Forest Park meteorological observation tower was ordered as upper tower>middle tower>lower tower.The concentration of PM 2.5 in the three plots was sequenced as Beijing Forestry University>Olympic Forest Park>Jiufeng National Forest Park at the same height.PM 2.5 values at the three plots were higher in winter than in spring.
作者
于璐
王誉洁
孙丰宾
童群
施思
晏海
邵锋
Yu Lu;Wang Yujie;Sun Fengbin;Tong Qun;Shi Si;Yan Hai;Shao Feng(School of Landscape Architecture, Zhejiang Agriculture & Forestry University, Lin an 311300, Zhejiang, China;School of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, Heilongjiang, China;Lin an District Environmental Monitoring Station, Lin an 311300, Zhejiang, China;School of Landscape Architecture, Beijing Forestry University, Beijing 100083, China)
出处
《中国城市林业》
2019年第1期1-5,共5页
Journal of Chinese Urban Forestry
基金
国家自然科学基金"基于局地气候区分类的城市热环境时空变化特征及其主要景观驱动因子研究"(51508515)
浙江省大学生科技创新活动计划"城市绿地空气PM2.5浓度的动态变化及影响因素"(2018R412044)
关键词
PM2.5
质量浓度
垂直梯度法
植物群落
PM 2.5
mass concentration
vertical gradient method
plant community
