北京西山三种典型游憩林春季空气颗粒物日变化规律  

Diurnal Variation of Airborne Particulate Matter in 3 Typical Recreation Forests in West Mountain of Beijing Area in Spring

作　　者：郭二果[1,2] 王成[1,3] 彭镇华[1] 郄光发[1] 杨伟伟[1] 房城[1,3,4] 周志海 

机构地区：[1]中国林业科学研究院林业研究所,北京100091 [2]天津市环境工程评估中心,天津300191 [3]北京林业大学林学院,北京100083 [4]杭州西湖风景名胜区吴山景区管理处,杭州310002 [5]北京市百望山森林公园管理处,北京100094

出　　处：《林业科学》2009年第6期145-148,共4页Scientia Silvae Sinicae

基　　金：国家“十一五”攻关重大专项课题(2006BAD03A06)

摘　　要：Variation in concentrations of the airborne particulate matters(PM)in three kinds of typical recreation forests in Baiwang Mountain,West Mountain area of Beijing were observed day and night in spring.Results showed that:1)Diurnal variations of PM concentrations in three kinds of typical recreation forests in West Mountain of Beijing area in spring were all synchronous.Curves of diurnal variation of PM concentrations had two peaks and two vales,and two peaks presented at 7:00-9:00 and 21:00-1:00,and two vales presented at 15:00 and 3:00-5:00 respectively.In addition,the larger proportion finer particles took the heavier total particles were in a day;2)Comparatively,peaks in day and vales at night of finer particles presented earlier than that of coarser particles,however the peaks at night were later;3)Weather conditions had influences on PM,and the finer particles were more sensitive to the conditions than the coarse particles.In general,PM concentration was higher at the state of low air temperature,high air relative humidity and soft wind.They also increased at cloudy night,especially for finer particles.Variation in concentrations of the airborne particulate matters（PM） in three kinds of typical recreation forests in Baiwang Mountain, West Mountain area of Beijing were observed day and night in spring. Results showed that： 1 ） Diurnal variations of PM concentrations in three kinds of typical recreation forests in West Mountain of Beijing area in spring were all synchronous. Curves of diurnal variation of PM concentrations had two peaks and two vales, and two peaks presented at 7：00 - 9：00 and 21：00 - 1：00, and two vales presented at 15：00 and 3：00 - 5：00 respectively. In addition, the larger proportion finer particles took the heavier total particles were in a day; 2） Comparatively, peaks in day and vales at night of finer particles presented earlier than that of coarser particles, however the peaks at night were later; 3） Weather conditions had influences on PM, and the finer particles were more sensitive to the conditions than the coarse particles. In general, PM concentration was higher at the state of low air temperature, high air relative humidity and soft wind. They also increased at cloudy night, especially for finer particles.

关 键 词：游憩林 空气颗粒物 春季 日变化 北京西山 

分 类 号：S725.1[农业科学—林木遗传育种]