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Tea pollution
April 12, 2013, Friday
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TREES and shrubs are to be planted along highways in Xihu District - home to the world-famous Longjing tea - in an effort to shelter tea bushes from vehicle exhaust fumes.
Tea plantations in Longjing, Meijiawu and Maojiabu are close to highways that bring busloads of tourists the whole year round, especially in spring.
Lou Xianmu, a district official, said some tea gardens are just 5 to 10 meters away from the roads. These gardens are popular destinations for visitors to sip fresh tea while enjoying the sights.
But due to an influx of tourists during weekends and holidays, exhaust fumes have become a major source of pollution.
Authorities will plant trees on roadsides but haven't determined what species are best to absorb vehicle emissions and yet low enough so as not to block views.
Lead levels in tea leaves produced in plots away from the highways are 39 to 129 percent lower than those near roads, researchers said.
As tea leaves are not washed in the tea-making process, clean and fresh air is important for tea production.
Tea plantations in Longjing, Meijiawu and Maojiabu are close to highways that bring busloads of tourists the whole year round, especially in spring.
Lou Xianmu, a district official, said some tea gardens are just 5 to 10 meters away from the roads. These gardens are popular destinations for visitors to sip fresh tea while enjoying the sights.
But due to an influx of tourists during weekends and holidays, exhaust fumes have become a major source of pollution.
Authorities will plant trees on roadsides but haven't determined what species are best to absorb vehicle emissions and yet low enough so as not to block views.
Lead levels in tea leaves produced in plots away from the highways are 39 to 129 percent lower than those near roads, researchers said.
As tea leaves are not washed in the tea-making process, clean and fresh air is important for tea production.
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