Project Update: April 2013 Results Stand structure of Woody plant species



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Project Update: April 2013

Results

Stand structure of Woody plant species.

Hosthota area

A total of 1503 woody plants belonging to 57 genera and 71species spread over 32 families were recorded from 132 circular plots (10m radius) in Hosthota area as indicated in Table 1 and 2. The woody plants community parameters computed from the data are as presented in Table 1. Among these Knema attenuata was represented by maximum number of individuals (n=238) followed by Diospyros sylvetrica (n=185), Hopea ponga (n=158) and Holigarna arnottiana (n= 111). The highest Important Value Index (IVI) was recorded for Knema attenuata (28.6) followed by Diospyros sylvatrica (23.94), Hopea ponga (19.76) and Olea dioca (14.21) as shown in Table 1 and Fig. 1.



Table 1. Table showing details of species, family, frequency, abundance, density, basal area and IVI present in Hosthota area.

Name of the species

Family

N

No. of plots

GBH (m)

F

A

D

RF

RA

RD

BA

IVI

Olea dioca

Oleaceae

97

54

90.94

40.91

1.80

0.73

5.71

2.05

6.46

9.02

14.22

Nathopegia racemosa

Anacardiaceae

20

15

10.81

11.36

1.33

0.15

1.59

1.52

1.33

0.55

4.44

Carallia brachiata

Rhizophoraceae

3

3

1.32

2.27

1.00

0.02

0.32

1.14

0.20

0.04

1.66

Memecylon malabaricum

Melastomaceae

12

11

5.42

8.33

1.09

0.09

1.16

1.25

0.80

0.20

3.21

Garcinia morella

Clusiaceae

87

59

39.43

44.70

1.47

0.66

6.24

1.69

5.79

1.49

13.71

Drypetes confertifolius

Euphorbiaceae

1

1

1.04

0.76

1.00

0.01

0.11

1.14

0.07

0.08

1.32

Callophylum apetalum

Clusiaceae

1

1

0.09

0.76

1.00

0.01

0.11

1.14

0.07

0.00

1.32

Caryota urens

Aracaceae

3

2

2.59

1.52

1.50

0.02

0.21

1.71

0.20

0.18

2.13

Diospyros montana

Ebanaceae

3

3

2.37

2.27

1.00

0.02

0.32

1.14

0.20

0.16

1.66

Vitex altissema

Verbenaceae

20

18

32.02

13.64

1.11

0.15

1.90

1.27

1.33

5.17

4.50

Lopopetalum whitianum

Celastraceae

12

8

18.35

6.06

1.50

0.09

0.85

1.71

0.80

3.66

3.36

Sterculia guttata

Sterculiaceae

1

1

0.80

0.76

1.00

0.01

0.11

1.14

0.07

0.05

1.32

Ficus microcarpa

Moraceae

1

1

4.70

0.76

1.00

0.01

0.11

1.14

0.07

1.75

1.32

Neolitsia zeylanica

Lauraceae

4

5

2.74

3.79

0.80

0.03

0.53

0.91

0.27

0.17

1.71

Steriospermum personatum

Bignonianaceae

1

1

1.65

0.76

1.00

0.01

0.11

1.14

0.07

0.21

1.32

Eleocarpus serratus

Urticaceae

12

11

5.98

8.33

1.09

0.09

1.16

1.25

0.80

0.22

3.21

Actinodaphne hookeri

Lauraceae

10

8

6.76

6.06

1.25

0.08

0.85

1.43

0.67

0.40

2.94

Litsea stocksii

Lauraceae

19

16

13.28

12.12

1.19

0.14

1.69

1.36

1.26

0.83

4.31

Aparosa lindelana

Euphorbiaceae

26

21

16.40

15.91

1.24

0.20

2.22

1.41

1.73

0.90

5.37

Macarange peltata

Euphorbiaceae

9

7

5.37

5.30

1.29

0.07

0.74

1.47

0.60

0.26

2.81

Cinnamomum malabathrum

Lauraceae

4

4

2.15

3.03

1.00

0.03

0.42

1.14

0.27

0.09

1.83

Euodia lunu-ankenda

Rutaceae

1

1

0.48

0.76

1.00

0.01

0.11

1.14

0.07

0.01

1.32

Canerium strictum

Burseraceae

2

2

1.99

1.52

1.00

0.02

0.21

1.14

0.13

0.17

1.49

Chukrasia tabularis

Liliaceae

2

2

4.03

1.52

1.00

0.02

0.21

1.14

0.13

0.65

1.49

Ixora brachiata

Rubiaceae

38

36

17.07

27.27

1.06

0.29

3.81

1.21

2.53

0.65

7.54

Cassine glauca

Celastraceae

12

12

16.97

9.09

1.00

0.09

1.27

1.14

0.80

3.43

3.21

Xantolis tomentosa

Sapotaceae

4

2

2.15

1.52

2.00

0.03

0.21

2.29

0.27

0.05

2.76

Persia macarantha

Lauraceae

11

10

17.98

7.58

1.10

0.08

1.06

1.26

0.73

2.92

3.05

Hopea ponga

Dipterocarpaceae

158

58

116.22

43.94

2.72

1.20

6.13

3.11

10.52

9.09

19.76

Chrysophyllum roxburghii

Sapotaceae

6

5

4.70

3.79

1.20

0.05

0.53

1.37

0.40

0.34

2.30

Artocarpus heterophyllus

Moraceae

2

2

1.65

1.52

1.00

0.02

0.21

1.14

0.13

0.10

1.49

Tabernamontana heyinana

Apocynaceae

8

8

3.34

6.06

1.00

0.06

0.85

1.14

0.53

0.10

2.52

Canthium dicoccum

Rubiaceae

4

5

1.96

3.79

0.80

0.03

0.53

0.91

0.27

0.07

1.71

Syzygium sp.

Myrtaceae

1

1

1.42

0.76

1.00

0.01

0.11

1.14

0.07

0.16

1.32

Flacourtia montana

Flacortiaceae

20

18

16.08

13.64

1.11

0.15

1.90

1.27

1.33

0.90

4.50

Artocarpus hirsutus

Moraceae

16

14

13.16

10.61

1.14

0.12

1.48

1.31

1.07

1.26

3.85

Knema attenuata

Myristicaceae

238

93

153.16

70.45

2.56

1.80

9.83

2.92

15.84

8.87

28.60

Diospyros sylvetrica

Ebanaceae

185

87

154.65

65.91

2.13

1.40

9.20

2.43

12.32

12.43

23.94

Symplocos racemosa

Symplocaceae

19

14

13.37

10.61

1.36

0.14

1.48

1.55

1.26

0.89

4.30

Garcinia talbotti

Clusiaceae

4

4

4.24

3.03

1.00

0.03

0.42

1.14

0.27

0.84

1.83

Alsea daphni

Lauraceae

2

1

2.99

0.76

2.00

0.02

0.11

2.29

0.13

0.37

2.52

Albizia lebbeck

Mimosaceae

1

1

1.85

0.76

1.00

0.01

0.11

1.14

0.07

0.21

1.32

Belsmedia whitii

Lauraceae

10

9

7.59

6.82

1.11

0.08

0.95

1.27

0.67

0.70

2.89

Aglaia roxburghiana

Meliaceae

39

25

25.27

18.94

1.56

0.30

2.64

1.78

2.60

1.33

7.02

Syzizium laetum

Myrtaceae

2

2

0.86

1.52

1.00

0.02

0.21

1.14

0.13

0.02

1.49

Syzygium cumini

Myrtaceae

2

2

4.13

1.52

1.00

0.02

0.21

1.14

0.13

0.68

1.49

Prunus ceylanica

Rosaceae

1

1

1.55

0.76

1.00

0.01

0.11

1.14

0.07

0.19

1.32

Diospyros candolliana

Ebanaceae

10

9

6.58

6.82

1.11

0.08

0.95

1.27

0.67

0.43

2.89

Dimocarpus longan

Sapindaceae

10

8

5.77

6.06

1.25

0.08

0.85

1.43

0.67

0.29

2.94

Homelium zeylanicum

Flacortiaceae

3

3

1.17

2.27

1.00

0.02

0.32

1.14

0.20

0.03

1.66

Careya arborea

Aracaceae

3

2

1.55

1.52

1.50

0.02

0.21

1.71

0.20

0.08

2.13

Pterospermum reticulatum

Sterculiaceae

25

14

18.28

10.61

1.79

0.19

1.48

2.04

1.66

1.57

5.19

Mangefera indica

Anacardiaceae

12

12

8.15

9.09

1.00

0.09

1.27

1.14

0.80

0.50

3.21

Holigarna arnottiana

Anacardiaceae

111

70

100.83

53.03

1.59

0.84

7.40

1.81

7.39

9.74

16.60

Syzizium hemispermicum

Myrtaceae

3

2

3.67

1.52

1.50

0.02

0.21

1.71

0.20

0.40

2.13

Polyanthia fragrens

Anonaceae

1

2

0.89

1.52

0.50

0.01

0.21

0.57

0.07

0.06

0.85

Diospyros buxifolia

Ebanaceae

32

27

36.61

20.45

1.19

0.24

2.85

1.35

2.13

4.38

6.34

Lageostromia microcarpa

Lythraceae

5

4

7.32

3.03

1.25

0.04

0.42

1.43

0.33

0.92

2.18

Glochidion velutinum

Euphorbiaceae

1

1

0.38

0.76

1.00

0.01

0.11

1.14

0.07

0.01

1.32

Maduca longifolia

Sapotaceae

4

4

3.28

3.03

1.00

0.03

0.42

1.14

0.27

0.21

1.83

Syzigium gardneri

Myrtaceae

28

25

44.04

18.94

1.12

0.21

2.64

1.28

1.86

10.69

5.79

Myristica malabarica

Myristicaceae

7

7

4.45

5.30

1.00

0.05

0.74

1.14

0.47

0.26

2.35

Mimusops elengi

Sapotaceae

10

9

9.07

6.82

1.11

0.08

0.95

1.27

0.67

0.74

2.89

Myristica dactyloides

Myristicaceae

9

8

6.11

6.06

1.13

0.07

0.85

1.29

0.60

0.46

2.73

Diospyros angustfolia

Ebanaceae

6

5

2.43

3.79

1.20

0.05

0.53

1.37

0.40

0.08

2.30

Callophylum tomentasum

Clusiaceae

6

5

9.21

3.79

1.20

0.05

0.53

1.37

0.40

1.41

2.30

Callicarpa tomentosa

Verbenaceae

2

2

0.83

1.52

1.00

0.02

0.21

1.14

0.13

0.02

1.49

Holigarna grahmi

Anacardiaceae

8

7

7.36

5.30

1.14

0.06

0.74

1.31

0.53

0.65

2.58

Litsea floribonda

Lauraceae

12

11

9.58

8.33

1.09

0.09

1.16

1.25

0.80

0.80

3.21

Hydnocarpus pentandra

Flacortiaceae

1

1

1.78

0.76

1.00

0.01

0.11

1.14

0.07

0.21

1.32

Garcinia gummi-gutta

Clusiaceae

59

42

38.53

31.82

1.40

0.45

4.44

1.61

3.93

2.70

9.97

Artocarpus lakoocha

Moraceae

1

1

0.66

0.76

1.00

0.01

0.11

1.14

0.07

0.03

1.32
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