Table 2 Error index of the DBH Weibull distribution for 17 tree species in all plots

White birch (B. platyphylla Suk.)

0.31

0.11

0.75

0.14

0.19

Larch (L. gmelinii (Rupr.) Kuzen)

0.34

0.07

0.80

0.17

0.20

Mongolian oak (Q. mongolica Fisch. ex Ledeb.)

0.34

0.15

0.52

0.09

0.14

Aspen (P. davidiana Dode)

0.24

0.08

0.67

0.12

0.10

Basswood (T. amurensis Rupr.)

0.37

0.13

0.86

0.17

0.20

Black birch (B. davurica Pall.)

0.42

0.14

0.90

0.18

0.13

Scotch pine (P. sylvestris var. mongolica Litv.)

0.32

0.13

0.86

0.14

0.24

Mono maple (A. mono Maxim.)

0.46

0.17

0.92

0.12

0.38

Elm (U. pumila L.)

0.42

0.12

0.78

0.12

0.19

Walnut (J. mandshurica Maxim.)

0.45

0.11

0.89

0.17

0.19

Spruce (P. koraiensis Nakai)

0.30

0.13

0.60

0.10

0.23

Korean pine (P. koraiensis Sieb.et Zucc.)

0.36

0.12

0.92

0.18

0.16

Ash (F. mandschurica Rupr.)

0.43

0.17

0.72

0.13

0.27

Ribbed birch (B. costata Trautv.)

0.43

0.15

0.83

0.20

0.20

Fir (A. nephrolepis (Trautv.) Maxim.)

0.43

0.14

0.86

0.17

0.18

Amur corktree (P. amurense Rupr.)

0.48

0.19

0.71

0.13

0.28

Willow (C. arbutifolia (Pall.) A. Skv.)

0.44

0.22

0.68

0.12

0.32