A Brief Introduction to the Top Ten Anti – polluted Greening Species
In China, there are many trees which have strong anti-pollution ability.
1, Masson pine commonly is known as one kind of evergreen trees, its height can up to 20 to 30 meters, the crown looks like tower or broad oval and have beautiful gesture. The needle leaves and trunk of it can not only secret pine resin which is easy to oxidize, but release low concentrations of ozone which can clean air. The dust-proof and vacuuming ability of the Masson pine is very strong, an adult pine can adsorb tons of dust a year.
2, Cypress also is known as vertical cypress, incense cypress, evergreen trees, its height can up to 15 to 20 meters. The canopy of it is thick, green and elegant, it is a kind of very good town garden green ornamental tree species. It can absorb the toxic and harmful gases like sulfur dioxide and chlorine at atmosphere so that planting it in the refinery, pharmaceutical plants, chemical fiber plants, plastic plants and other plant area is pretty good.
3, Ginkgo also known as white fruit trees, is a great tree in China and also is one of the world’s five major ornamental wood. The rich well-drained acid soil, neutral soil and calcareous soil is its favorite, and it also have a strong resistance to smoke and dust, have the absorption ability of sulfur dioxide and other gas capacity, can plant for street trees and garden trees.
4, The deciduous trees’ height can be 20 to 30 meters, and its trunk is straight, branches are dense, shade dense like a cover. Branches and leaves are also the anti-sulfur dioxide and other harmful gases substances. Its leaves can also secrete fungicides and kill a certain range of bacteria.
5, Locust also is known as acacia. Deciduous trees, lot of thorns on the trees; leaves are elliptic or ovate, can resist sulfur dioxide, chlorine, photochemical smog and other, there is a strong ability to absorb lead vapor. All of these are its features.
6, Ailanthus is a kind of deciduous trees. There will be smell after rub its leaves. Ailanthus have a strong resistance to sulfur dioxide, nitrogen dioxide, chlorine, nitric acid, mist and other toxic gases. It can be planted on some area where air pollution is serious.
7, Elm is a kind of deciduous trees, its height can reach up to 30 meters, 
and its bark is brown, leaves are thick, branches drooping like willow. The tree species adaptability is very strong, it is resistant to drought, cold and barren. It is a good substance can resist sulfur dioxide, chlorine, fluoride and other toxic gases and insects. Anti-dust ability also is good, it can absorb dust up to 10 grams or more per square.
8, Paper mulberry, also known as false bayberry which is deciduous trees and dioecious. The tree always is planted aside the 20 to 50 meters downstream of the discharge of sulfur dioxide, hydrogen sulfide, chlorine gas. It also has strong resistance to acids and nitrogen oxides and can be used as pioneer green tree of the plant site.
9, Neem trees is also known as Melia azedarach,it height can up to 30 meters. The tree can not only absorb sulfur dioxide, hydrogen fluoride and other toxic and harmful gases, but also is insecticide expert which can control 12 kinds of serious agricultural pests, is known as pollution-free plant pesticides.
10, Privetia is evergreen small trees, the leaves of it is ovate and smooth. The tree has strong resistance to the sulfur dioxide as well as it also has strong absorption of harmful gases and lead vapor. It has the largest Leaves that can absorb amount of dust.
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