Sentences with phrase «estimate urban trees»

In total, analysts estimate urban trees save the U.S. around $ 18.3 billion every year.

Not exact matches

He estimates the cooling effect of 100 000 mature urban trees — inner city Melbourne has around 70 000 — could save a city 3 million kilowatt hours of electricity annually.

The report, «The Value of Shade: Estimating the Effect of Urban Trees on Summertime Electricity Use,» has been submitted for publication to the journal Energy and Buildings.

Based on a study from the U.S. Departments of Energy and Agriculture, we estimate that using forest and urban wood waste, as well as some perennial crops such as switchgrass and fast - growing trees on nonagricultural land, the United States could develop more than 40 gigawatts of electrical generating capacity by 2020, roughly four times the current level.

Overall, the researchers estimate that urban areas lost a collective total of 1 percent of their tree cover in five years.

The present median benefit value from urban trees in all 10 megacities can be estimated as $ 482 million / yr due to reductions in CO, NO2, SO2, PM10, and PM2.5, $ 11 million / yr due to avoided stormwater processing by wastewater facilities, $ 0.5 million / yr due to building energy heating and cooling savings, and $ 8 million / yr due to CO2 sequestration.

While it's impossible to know exactly what benefits the urban trees bring us - including many psychological ones - the researchers have tried to estimate their impact using computer simulations.

Cities in the United States are increasingly seeing concrete in place of greenery as urban areas lose an estimated 36m trees annually, according to a study from the Forest Service.