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Change in Urban/Community Tree Cover by State

 

Year 1

Year 2

Change between years

State

Years

%

SE

%

SE

%a

%/yrb

Acres/yrc

Alabama

(2007-2014)

51.7

1.6

49.7

1.6

-2.0*

-0.32

-12,890

Alaska

(2006-2012)

48.8

2.3

48.8

2.3

0.0

0.00

0

Arizona

(2008-2014)

30.8

1.5

30.2

1.5

-0.6

-0.11

-6,190

Arkansas

(2009-2013)

47.3

1.6

46.9

1.6

-0.4

-0.08

-1,430

California

(2009-2014)

39.4

1.5

39.0

1.5

-0.4

-0.08

-7,890

Colorado

(2007-2013)

21.8

1.3

21.6

1.3

-0.2

-0.03

-610

Connecticut

(2008-2014)

63.0

1.5

62.7

1.5

-0.3

-0.05

-640

Delaware

(2006-2011)

35.8

1.5

35.3

1.5

-0.5

-0.10

-290

District of Columbia

(2010-2015)

36.1

1.5

33.9

1.5

-2.2*

-0.44

-170

Florida

(2009-2014)

49.0

1.6

47.6

1.6

-1.4*

-0.26

-18,060

Georgia

(2009-2014)

63.4

1.5

61.4

1.5

-2.0*

-0.40

-18,830

Hawaii

(2010-2015)

50.2

1.6

50.1

1.6

-0.1

-0.02

-150

Idaho

(2008-2014)

14.2

1.1

13.8

1.1

-0.4

-0.07

-420

Illinois

(2008-2013)

30.9

1.5

29.9

1.4

-1.0*

-0.20

-6,910

Indiana

(2008-2013)

30.8

1.5

30.1

1.5

-0.7*

-0.13

-2,790

Iowa

(2008-2013)

21.9

1.3

20.9

1.3

-1.0*

-0.20

-2,870

Kansas

(2009-2014)

31.0

1.5

30.3

1.5

-0.7*

-0.13

-1,450

Kentucky

(2008-2014)

39.8

1.5

38.9

1.5

-0.9*

-0.16

-2,500

Louisiana

(2009-2014)

47.6

1.6

47.3

1.6

-0.3

-0.06

-1,330

Maine

(2008-2013)

68.4

1.5

68.1

1.5

-0.3

-0.06

-510

Maryland

(2009-2014)

53.4

1.6

53.1

1.6

-0.3

-0.06

-1,020

Massachusetts

(2008-2014)

59.7

1.6

58.4

1.6

-1.3*

-0.23

-4,930

Michigan

(2008-2014)

46.7

1.6

45.9

1.6

-0.8*

-0.13

-3,810

Minnesota

(2009-2014)

46.7

1.6

46.7

1.6

0.0

0.00

0

Mississippi

(2009-2014)

52.4

1.6

52.7

1.6

0.3

0.06

1,000

Missouri

(2010-2015)

40.1

1.5

39.7

1.5

-0.4

-0.08

-1,860

Montana

(2009-2014)

37.1

1.5

37.2

1.5

0.1

0.02

470

Nebraska

(2009-2014)

20.4

1.3

18.8

1.2

-1.6*

-0.32

-1,800

Nevada

(2009-2014)

27.0

1.4

26.8

1.4

-0.2

-0.04

-900

New Hampshire

(2009-2015)

64.4

1.5

63.0

1.5

-1.4*

-0.25

-1,650

New Jersey

(2008-2013)

48.4

1.6

47.8

1.6

-0.6*

-0.12

-2,590

New Mexico

(2010-2015)

21.9

1.3

22.1

1.3

0.2

0.04

790

New York

(2008-2013)

53.4

1.6

52.4

1.6

-1.0*

-0.19

-6,720

North Carolina

(2010-2015)

54.8

1.6

54.2

1.6

-0.6

-0.11

-4,510

North Dakota

(2009-2013)

10.7

1.0

10.1

1.0

-0.6

-0.13

-590

Ohio

(2009-2014)

39.2

1.5

38.2

1.5

-1.0*

-0.20

-7,230

Oklahoma

(2009-2014)

35.6

1.5

34.0

1.5

-1.6*

-0.30

-9,710

Oregon

(2008-2014)

35.6

1.5

33.9

1.5

-1.7*

-0.30

-3,450

Pennsylvania

(2007-2013)

46.8

1.6

46.2

1.6

-0.6

-0.11

-4,320

Rhode Island

(2010-2015)

54.5

1.6

52.3

1.6

-2.2*

-0.44

-1,260

South Carolina

(2009-2014)

54.8

1.6

53.6

1.6

-1.2

-0.23

-5,190

South Dakota

(2008-2014)

13.9

1.1

13.6

1.1

-0.3

-0.05

-280

Tennessee

(2008-2013)

48.4

1.6

46.9

1.6

-1.5*

-0.27

-9,060

Texas

(2009-2015)

28.9

1.4

28.3

1.4

-0.6*

-0.11

-10,180

Utah

(2010-2015)

16.7

1.2

16.6

1.2

-0.1

-0.02

-360

Vermont

(2010-2015)

57.5

1.6

56.6

1.6

-0.9*

-0.18

-370

Virginia

(2009-2014)

51.5

1.6

51.0

1.6

-0.5

-0.10

-2,970

Washington

(2009-2014)

42.3

1.6

41.6

1.6

-0.7

-0.14

-3,350

West Virginia

(2008-2014)

61.9

1.5

61.3

1.5

-0.6

-0.11

-790

Wisconsin

(2009-2014)

38.8

1.5

38.3

1.5

-0.5*

-0.10

-2,340

Wyoming

(2009-2014)

15.8

1.2

15.8

1.2

0.0

0.00

0

Total US

(2009-2014)

42.9

0.4

42.2

0.4

-0.7*

-0.12

-174,940

 

Footnotes:

a Change in percent tree cover between years.
b Annualized change in percent tree cover between years.
c Annualized change in tree cover (in acres) between years.
* Statistically significant change at alpha = 0.05.

Source:
Nowak, David J.; Greenfield, Eric J. 2018. Declining urban and community tree cover in the United States. Urban Forestry & Urban Greening. 32: 32-55. https://doi.org/10.1016/j.ufug.2018.03.006.

 

For additional information, please contact David Nowak.

Last Modified: April 18, 2018