During the drier periods, urban trees survive better than those in fields or parks. One study revealed that leakage water pipes are the reason for their resistance.
Pipe water? Who never? When the headquarters is too much, to the trees “Send” her.
A team led by André Poiriera professor at the University of Quebeque in Montreal (Canada), presented in July at the Goldschmidt Geochemistry Conference in Prague, one where he revealed that cities trees are more drought resistant than those in parks because they are drinking from an unusual water source: leakage pipes.
After long periods with little rain, water levels and sap flow tend to decrease more trees to grow in parks compared to those on streets. But until then, it was not clear why.
To investigate this phenomenon, the team collected samples of border-of-the-edge and bordered tree tree trunk (Acer platanoides E Acer saccharinum) in parks and streets in two neighborhoods of Montreal.
As details A, the levels of various lead isotopes are measured – atomically distinct metal versions that may indicate unique origins – and then linked the isotope levels to the recent history of the trees telling the trunk rings.
While the park trees contained lead isotopes normally associated with air pollution, Street trees had isotopes found in lead water pipeswhich were made with metal of geologically old deposits in nearby mines.
The trees analyzed need to consume about 50 liters of water a day. As street trees they can’t get much of this from rainwater, which falls into concrete and drips to the city’s sewers, poirier theorizes that the most likely explanation is that water comes from Montreal leakage pipes, which lose 500 million liters of water per day.
