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Table 3 Spearman correlation coefficients between biomass compartments and dendrometric variables for the studied species

From: Aboveground biomass equations for sustainable production of fuelwood in a native dry tropical afro-montane forest of Ethiopia

Species

Biomass comparments

Dendrometric variables

h

hc

hb

dbh

db

cd

cl

Allophyllus abyssinicus

Stem

0.72**

0.96***

0.32

0.85***

0.82***

0.13

0.46

Thick branches

0.20

0.02

0.01

0.22

0.25

0.05

−0.08

Thin branches + leaves

0.64*

0.58*

0.38

0.65**

0.64*

0.10

0.29

Crown

0.48

0.36

0.19

0.54*

0.48

0.11

0.15

Above

0.86***

0.93***

0.24

0.91***

0.89***

0.07

0.50

Olea europaea ssp. cuspidata

Stem

0.71***

0.81***

0.09

0.95***

0.89***

0.67**

0.48*

Thick branches

0.70**

0.86***

0.08

0.89***

0.84***

0.81***

0.39

Thin branches + leaves

0.54*

0.76***

−0.11

0.92***

0.88***

0.51*

0.36

Crown

0.62**

0.84***

−0.02

0.95***

0.91***

0.67**

0.39

Above

0.68**

0.85***

0.05

0.96***

0.93***

0.68*

0.48*

Olinia rochetiana

Stem

0.84***

0.87***

0.36

0.92***

0.93***

0.75***

0.69**

Thick branches

0.69**

0.57**

0.41

0.76**

0.83***

0.64**

0.64**

Thin branches + leaves

0.67***

0.56**

0.29

0.82***

0.82***

0.55*

0.62**

Crown

0.69**

0.57**

0.37

0.83***

0.87***

0.62**

0.82***

Above

0.83***

0.83***

0.40

0.94***

0.95***

0.74***

0.68**

Rhus glutinosa

Stem

0.49

0.88***

0.19

0.98***

0.94***

0.44

0.69**

Thick branches

0.63*

0.36

−0.38

0.41

0.44

0.58*

0.59*

Thin branches + leaves

0.61*

0.59*

0.04

0.68*

0.68*

0.14

0.73**

Crown

0.61*

0.52

−0.26

0.68*

0.71**

0.47

0.73**

Above

0.63*

0.83***

0.10

0.92***

0.89**

0.46

0.74**

Scolopia theifolia

Stem

0.90***

0.89***

0.14

0.92***

0.88***

0.34

0.48*

Thick branches

0.79***

0.81**

0.02

0.73***

0.71**

0.35

0.47*

Thin branches + leaves

0.49*

0.53*

0.17

0.70***

0.70**

0.33

0.39

Crown

0.76***

0.81***

0.05

0.85***

0.88***

0.40

0.48*

Above

0.87***

0.90***

0.16

0.89***

0.83***

0.41

0.53*

  1. Thick branches: biomass of branches with diameter between 2 and 7 cm; thin branches + leaves: biomass of branches with diameter lower than 2 cm, including leaves biomass; crown: thick branches + thin branches + leaves biomass; above: stem + thick branches + thin branches + leaves biomass or stem + crown biomass
  2. hc commercial height, hb branching height, h total height, dbh diameter at breast height, db stump diameter, cd crown diameter, cl crown length
  3. *p ≤ 0.05; **p ≤ 0.01; ***p ≤ 0.001
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Annals of Forest Science

ISSN: 1297-966X