Facing Climate Change: Urban Gardening and Sustainable …
369
9 Particulate Matter
9.1 What Is the Influence of Particulate Matter
on the Climate?
Generally, it can be said there is a coherence between climate change and air quality.
Some studies state elementary or carbon particulates would be the second or third
most important pollutant in terms of global warming. Elementary carbon is a fraction
of particulate matter and originates mainly from incomplete burning processes [93].
When it comes to predicting climate change, researchers need to take into account
the effects of particles in the air. The ways in which atmospheric particles, such as
mineral dust, affect climate are important.
The particle number and size fractions were compared between 14 plant species
[94]. PM 2.5 particles dominated the particle distribution for all studied species. Salix
matsudana, Euonymus japonicus, Magnolia denudate, Salix japonica, Fraxinus chinensis and Ginkgo biloba were efficient species in accumulating PM 2.5 . PM capturing
ability of shrubs and leaf undersides of plant species should be paid more attention.
Particulate matter that accumulated on leaves were comprised mainly of C, O,
Si, Ca, Fe, and Pb. The densities and size fractions of the particles deposited on
the adaxial and abaxial sides of leaves were significantly different, and 24% of the
particles were deposited on the abaxial side of leaves. The densities of the particles
in four size fractions differed significantly among the species at the two sampling
sites. Salix matsudana, Euonymus japonicus, Magnolia denudate, Sophora japonica,
Amygdalus persica, and Salix babylonica efficiently captured all particle sizes on
their leaf surfaces. S. matsudana, E. japonicus, M. denudate, S. japonica, Fraxinus
chinensis, and Ginkgo biloba efficiently captured submicron and fine particles, which
can have serious effects on human health. These differences among species provide
more insight into the sink capacity of green tree species, and the efficiencies of
plant species for trapping particulates can be used to guide urban tree planning and
decrease air pollution.
Plants not only improve air quality by adsorbing particulate matter (PM) on leaf
surfaces but can also be affected by their accumulation. In a study [95, 96] about the
relationship between seven leaf traits and the accumulation of three different sizes
of PM (PM 11 , PM 2.5 and PM 0.2 ) on leaves. The retention abilities of plant leave with
respect to the three sizes of PM differed significantly at different sites and species.
The average PM retention capabilities of plant leaves and specific leaf area (SLA)
were significantly greater in a seriously polluted area. The findings from their study
provide useful information regarding the selection of plants to reduce atmospheric
pollution.
369
9 Particulate Matter
9.1 What Is the Influence of Particulate Matter
on the Climate?
Generally, it can be said there is a coherence between climate change and air quality.
Some studies state elementary or carbon particulates would be the second or third
most important pollutant in terms of global warming. Elementary carbon is a fraction
of particulate matter and originates mainly from incomplete burning processes [93].
When it comes to predicting climate change, researchers need to take into account
the effects of particles in the air. The ways in which atmospheric particles, such as
mineral dust, affect climate are important.
The particle number and size fractions were compared between 14 plant species
[94]. PM 2.5 particles dominated the particle distribution for all studied species. Salix
matsudana, Euonymus japonicus, Magnolia denudate, Salix japonica, Fraxinus chinensis and Ginkgo biloba were efficient species in accumulating PM 2.5 . PM capturing
ability of shrubs and leaf undersides of plant species should be paid more attention.
Particulate matter that accumulated on leaves were comprised mainly of C, O,
Si, Ca, Fe, and Pb. The densities and size fractions of the particles deposited on
the adaxial and abaxial sides of leaves were significantly different, and 24% of the
particles were deposited on the abaxial side of leaves. The densities of the particles
in four size fractions differed significantly among the species at the two sampling
sites. Salix matsudana, Euonymus japonicus, Magnolia denudate, Sophora japonica,
Amygdalus persica, and Salix babylonica efficiently captured all particle sizes on
their leaf surfaces. S. matsudana, E. japonicus, M. denudate, S. japonica, Fraxinus
chinensis, and Ginkgo biloba efficiently captured submicron and fine particles, which
can have serious effects on human health. These differences among species provide
more insight into the sink capacity of green tree species, and the efficiencies of
plant species for trapping particulates can be used to guide urban tree planning and
decrease air pollution.
Plants not only improve air quality by adsorbing particulate matter (PM) on leaf
surfaces but can also be affected by their accumulation. In a study [95, 96] about the
relationship between seven leaf traits and the accumulation of three different sizes
of PM (PM 11 , PM 2.5 and PM 0.2 ) on leaves. The retention abilities of plant leave with
respect to the three sizes of PM differed significantly at different sites and species.
The average PM retention capabilities of plant leaves and specific leaf area (SLA)
were significantly greater in a seriously polluted area. The findings from their study
provide useful information regarding the selection of plants to reduce atmospheric
pollution.