Spatial and Temporal Variation of PM10 Concentration in Urban Forest Vegetation Region
LU Shaowei
LIU Xiaona
LIU Bin
LU Xiaoying
CHEN Bo
LI Shaoning
Abstract：This paper analysed temporal and spatial variation of PM10 concentration in the vegetation area of Daxing Nanhaizi Forest Park and nonvegetation area of Yizhuang in Beijiang City.The PM10 concentration was determined by TEOM-1405-D dual channel particle on-line monitor of Thermo Fisher Scientific,USA.Results show that on the whole,the PM10 concentration of vegetation area was lower than that of the non-vegetation area,both of them presented the same diurnal variation tendency,which was double peak curve.Peak appears at 9:00 and 23:00.The monthly change trend of PM10 concentration was the same in vegetation zone and nonvegetation zone.In the four rainfalls,reduction rate of the third rainfall is the largest,the vegetation area was 82.30％ and the nonvegetation area was 64.50％;reduction rate of the fourth rainfall was the minimum,the vegetation area was 13.27％ and the nonvegetation area was 18.89％.Wind will reduce PM10 concentration in a certain extent.After wind,reduction rate range of PM10 concentration in vegetation area was 2.19％～35.59％,and reduction rate range of PM10 concentration in nonvegetation area was 7.50％～58.56％;PM10 concentration was negatively correlated with temperature.These results would provide a reasonable scientific basis for ecological construction and environmental protection of Beijing urban forest.
Keywords：Beijingurban forestsPM10typical weather conditionsspatial and temporal variation
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 119-125 )