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Table 7 Intra-ring position of DRY plot fire scars in cool-moist years (temperature < 0, PDSI>0) and warm-dry years (temperature > 0, PDSI<0) for the period 1700 to 1850 and the period 1851 to 1900. T and PDSI were each normalized with a mean of 0 and a standard deviation of 1 for the analysis years (1700 to 1900). Values shown are percent of total scars for each period (number of scars) in each intra-ring position accounted for by the combination of T and PDSI condition.

From: Human and Climatic Influences on Fire Occurrence in California’s North Coast Range, USA

 

Years in condition% (n)

Total scars for period% (n)

Earlywood% (n)

Latewood% (n)

Ring boundary% (n)

Cool-Moist 1700 to 1850

31 (46)

23 (47)

3 (6)

16 (33)

4 (8)

Warm-Dry 1700 to 1850

27 (40)

26 (53)

14 (28)

9 (19)

3 (6)

Total 1700 to 1850

58 (86)

49 (100)

17 (34)

25 (52)

7 (14)

Cool-Moist after 1850

22 (11)

21 (8)

2 (1)

11 (6)

8 (1)

Warm-Dry after 1850

40 (20)

40 (21)

8 (4)

13 (7)

19 (10)

Total after 1850

62 (31)

61(29)

10 (5)

24 (13)

27 (11)