# Briarcliff Manor School District Added Trees Equal to Bus Fleet

- Link: https://greenlivingguy.com/2013/01/briarcliff-manor-school-district-added-enough/
- Published: 2013-01-22T01:51:54-05:00
- Author: greenlivingguy

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# Briarcliff Manor School District Added Enough Trees For Each School Bus

According to [MIT](https://climate.mit.edu/ask-mit/how-many-new-trees-would-we-need-offset-our-carbon-emissions),
A single mature tree, meanwhile, may take in about 50 pounds of carbon dioxide per
year. At this rate, it would take 640 trees per person to account for all American
[emissions](https://greenlivingguy.com/2018/03/albertas-boreal-forest-could-be-dramatically-altered-by-2100-due-to-climate-change-study-shows/).
That which adds up to more than 200 billion trees. (A recent study estimated there
are about 3 trillion trees on Earth right now.^(2)

So when I saw the Todd Elementary School in my Briarcliff Manor School District 
[planted trees](https://greenlivingguy.com/2020/01/planted-trees-a-solution-for-reforestation/)
equal to the amount of school buses. It was a sigh of relief!

Urban trees and forests affect climate change, but are often disregarded because
their ecosystem services are not well- understood or quantified. Trees act as a 
sink for carbon dioxide (CO2) by fixing carbon during photosynthesis and storing
carbon as biomass. The net long-term CO2 source/sink dynamics of forests change 
through time as trees grow, die, and decay.

Human influences on forests (e.g., management) can further affect CO2 source/sink
dynamics of forests. That’s through such factors as fossil fuel emissions and harvesting/
utilization of biomass (Nowak et al., 2002).

### Trees in Urban Areas

In addition, trees in urban areas (i.e., urban forests) currently store carbon. 
All which can be emitted back to the atmosphere after tree death. So they  sequester
carbon as they grow. Urban trees also influ- ence air temperatures and [building energy](https://greenlivingguy.com/2017/11/home-building-energy-savings-101-is-king/)
use, and consequently alter carbon emissions from numerous urban sources (e.g., 
power plants) (Nowak, 1993). Thus, urban trees influence local climate, carbon cycles,
[ energy](https://greenlivingguy.com/2022/08/10-largest-wind-project-development-2022/)
use and climate change (e.g., Abdollahi et al., 2000; Wilby and Perry, 2006; Gill
et al., 2007; Nowak, 2010; Lal and Augustine, 2012).

According to [Columbia University](https://news.climate.columbia.edu/2013/07/12/urban-trees-fight-co2-emissions/),
researchers David Nowak and Robert Hoehn of the U.S. Forest Service with Satoshi
Hirabayashi and Allison Bodine of the Davey Institute in Syracuse, NY estimated 
the amount of fine particulate matter that trees remove in 10 different cities. 
They also determined the impact trees have on PM_(2.5) concentrations (fine particulate
matter consisting of small, airborne particles with a diameter of 2.5 micrometers
or less) and the associated effects on human health.