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Table 1 A summary of the forest and environmental attributes in this study

From: Assessing spatial and temporal dynamics of a spruce budworm outbreak across the complex forested landscape of Maine, USA

Attributes

Mean

SD

Min

Max

Volume (m3 ha-1)

225

112

2

626

Stand density index

583

237

16

1395

Relative stand density

0.30

0.12

0.01

0.66

Dominant height (m)

19.2

2.9

6.7

28.0

Cumulative defoliation (%)

85

86

0

586

% balsam fir in volume

26

24

0

100

% white spruce in volume

3

11

0

100

% black spruce in volume

3

13

0

100

% red spruce in volume

25

27

0

100

% hardwood in volume

19

21

0

100

Wind direction (degree)1

262

77

135

360

Wind velocity (m s-1)1

11.9

2.4

8.5

15.6

Habitat suitability

0.60

0.13

0.00

1.00

Climate site index2

13.5

1.4

9.2

19.0

Wetness index

7.3

2.9

0.8

15.8

Slope (%)

9.8

14.0

0.0

132.7

Aspect (degree)

174

113

0

360

Elevation (m)

263

130

41

691

  1. 1Based on fastest mile wind direction and velocity
  2. 2Introduced by Weiskittel et al. (2011b)