October 2011 - Parks & Recreation - 27

by the numberS

Safety in Numbers
3: The number of classic symptoms of

56: The percentage violent crimes fell at the

3: The number of symptoms of mental fatigue

83: The percentage of crimes during a two-

mental fatigue, as measured by psychologists
(inattentiveness, irritability, and poor impulse
control).

relieved substantially by park-like surroundings,
according to a study of young adults published in
the Journal of Environmental Psychology.

1998: The year a study entitled, " Environment
and crime in the inner city: Does vegetation reduce
crime? " was published in the journal Environment
and Behavior. The University of Illinois researchers
who conducted the study found
that Chicago public housing
residents who lived near
outdoor greenery
socialized more
with neighbors
and expressed
greater
feelings of
community
than those
lacking
green
spaces.

2001:

The year a
follow-up to the
1998 study was
published, giving
further attention to the
" vegetation effect. " The
study was also conducted by the
University of Illinois-and also studied a
Chicago public housing development. The goal was
to quantify the impact of vegetation on crime.

shuttERstock

48: The percentage property-related crimes

dropped in apartment buildings surrounded by trees
and greenery, as compared to apartment buildings
surrounded by barren landscapes, according to the
2000 study.

greenery-rich apartment buildings, as compared to
the greenery-poor apartment buildings in the 2001
Chicago study.

month period in Austin, Texas, that occurred
in places with " greenness values " below 34
percent. The study, which used GIS technology to
analyze relative amounts of greenness in Austin's
neighborhoods, found that crime rate was inversely
proportional to the amount of greenness in an area.

25: The percentage park use increased

when Macon, Georgia, engaged in
beautification efforts for its
Village Green Park.

50: The

percentage
incidents of
crime or
violence
dropped
at Village
Green Park
following
Macon's
revitalization
project.

45: The

decrease in crimes
(per thousand homes)
a 2010 U.S. Forest Service
study concluded would be
the result having a 35-foot tree
along the street in front of every house.
(Statistics are based on analysis of more than two
dozen variables pertaining to homes and lots in
Portland, Oregon.)

90: The decrease in crimes (per thousand

homes) the U.S. Forest Service study concluded
would be the result of having a 50-foot tree along
the street in front of every house.
w w w . N R P A . O R G    O C T O B E R 2 0 1 1    Parks

& Recreation

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October 2011 - Parks & Recreation

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