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Table 5 Minimum pulse density (pulses m -2 ) required to produce at least 0.2 ground returns m -2 as a function of slope, crop stand density for the mean non-crop stand density (438 stems ha -1 ) and the most common non-crop stand density (0 stems ha -1 )

From: Influence of stand and site conditions on the quality of digital elevation models underlying New Zealand forests

 

Non-crop stand density of 0 stems ha-1

Non-crop stocking 438 stems ha-1

Slope

Crop stand density (stems ha-1)

Crop stand density (stems ha-1)

 

250

500

750

1000

250

500

750

1000

0

0.5

0.6

0.7

0.7

0.7

0.9

1.0

1.1

5

0.5

0.7

0.7

0.8

0.7

1.0

1.2

1.3

10

0.6

0.7

0.8

0.9

0.8

1.2

1.4

1.5

15

0.6

0.8

0.9

1.0

1.0

1.4

1.8

2.0

20

0.7

0.9

1.1

1.2

1.1

1.8

2.5

2.9

25

0.8

1.1

1.3

1.4

1.3

2.5

4.0

5.0

30

0.9

1.3

1.5

1.7

1.7

4.0

10

20

35

1.0

1.5

2.0

2.2

2.2

10

27

27

40

1.2

2.0

2.9

3.3

3.3

27

27

27

45

1.4

2.9

5.0

6.7

6.7

27

27

27

  1. All values are shown for the mean New Zealand rotation length of 28 years.