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Table 10 Variables to be measured in the ongoing SNFI

From: Improving stem quality assessment based on national forest inventory data: an approach applied to Spanish forests

For all species selected

Additional for Pinus spp.

Additional for

Eucalyptus spp.

Tree taper

Number of living branches in the first 6 m

Number of stools (coppiced trees that grow new shoots from the stump) in a coppiced forest in the 5 m radius subplot of the SNFI

Height of the first living branch with a diameter greater than or equal to 2 cm in the first 6 m

Number of dead branches in the first 6 m

Average number of shoots in the mean stool, which should also be located in the 5-m radius subplot

Height of the first dead branch with a diameter greater than or equal to 2 cm in the first 6 m

Average branch diameter in the first 6 m considering both dead and living branches

Percentage of the crown foliar surface damaged by fungal species of the genus Mycosphaerella spp. in the five selected trees

Crown base height, if present, in the first 6 m

Diameter of the largest branch in the first 6 m

Percentage of crown damage produced by the eucalyptus weevil (Gonipterus scutellatus Gyll.) in the five selected trees

Presence of spiral grain

Phytosanitary status of the largest branch in the first 6 m

 

Height of artificial pruning

Crown percentage affected by the pine processionary moth (T. pityocampa)

 

Type of stem straightness and deviations

Crown percentage affected by the pitch canker disease (F. circinatum)

 

The length and number of straight-log lengths

Presence of the pitch canker disease (F. circinatum) in the stem

 

Mean wood density

Presence or absence of resin bleeding in the 6 first m of the P. pinaster stems

 

Diameter at breast height

  

Leaning

  

Total height

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