Vegetative cover and PAHs accumulation in soils of urban green space.
We investigated how urban land uses influence soil accumulation of polycyclic aromatic hydrocarbons (PAHs) in the urban green spaces composed of different vegetative cover. How did soil properties, urbanization history, and population density affect the outcomes were also considered. Soils examined were obtained at 97 green spaces inside the Beijing metropolis. PAH contents of the soils were influenced most significantly by their proximity to point source of industries such as the coal combustion installations. Beyond the influence circle of industrial emissions, land use classifications had no significant effect on the extent of PAH accumulation in soils. Instead, the nature of vegetative covers affected PAH contents of the soils. Tree-shrub-herb and woodland settings trapped more airborne PAH and soils under these vegetative patterns accumulated more PAHs than those of the grassland. Urbanization history, population density and soil properties had no apparent impact on PAHs accumulations in soils of urban green space.
State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China.
Chi
C
Peng
Zhiyun
Z
Ouyang
Meie
M
Wang
Weiping
W
Chen
Wentao
W
Jiao
D002947:Cities; D004784:Environmental Monitoring; D004787:Environmental Pollution / Q000706:statistics & numerical data; D063245:Plant Development; D010944:Plants / Q000737:chemistry / Q000378:metabolism*; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis* / Q000378:metabolism; D012989:Soil Pollutants / Q000032:analysis* / Q000737:chemistry
D011084:Polycyclic Aromatic Hydrocarbons; D012989:Soil Pollutants