Forest structure and Species Composition in the Secondary Forest of Private Area at Chiang Dao District, Chiang Mai Province

Transcription

1 Forest structure and Species Composition in the Secondary Forest of Private Area at Chiang Dao District, Chiang Mai Province Wongsatorn Phumphuang Department of Forest Biology, Faculty of Forestry, Kasetsart University

2 Outline Introduction Objective Study site Materials and Methodology Result and Discussion Conclusion Acknowledgement

3 Introduction Natural Forest Natural Forest %E0%B8%A3%E0%B8%B8%E0%B8%81/page/2/ Deforestation Degraded Forest Natural succession Restoration Secondary Forest

4 Introduction Chiang Dao Forest Secondary Forest at private area Plant biodiversity? Environment factor? Tree association? Regeneration?

5 Objective To study forest structure and species composition in the secondary forest of private area

6 Study site Private area at Chiang Dao district, Chiang Mai Province Chiang Mai Province Mae Na Chiang Dao District Average Rainfall 1,300 mm./year Temperature C Elevation 300 2,225 msl

7 Material and Methodology Materials 50 m. measuring tape Diameter tape Pole Digital camera Tagged aluminum number Stationery

8 Material and Methodology Methodology 1. Permanent plot, 40 x 40 m, n = 3 40 m 10 m tree 4m 40 m 10 m sapling seedling 4m 1m 1m

9 Material and Methodology 2. Measured tree and identified species Tree (DBH 4.5 cm) Measured DBH of tree ; taggeg aluminum number every species and identified species

10 Material and Methodology Sapling (DBH < 4.5, H > 1.3 m) and Seedling (H < 1.3 m) Identified species and counted the number of species

11 Data Analysis 1. Important value index (IVI) Dominant (Do), Frequency (F), Density (D) and Relative Do, Relative F and Relative D IVI = Rdo + RF + RD = 300 % (Whittaker, 1970)

12 Data Analysis 2. Species diversity (Shannon Wiener, 1949) H = Index of species diversity S = The number of species of all species of plant communities. pi = The ratio of the number of species (i) to the total number of all species.

13 Result & Discussion Species composition (34 families 81 genera 101 species) Species Families genera Species Density (stems/rai) H Seedling , Sapling Tree

14 Result & Discussion Dominant species based on important value index (IVI) Tree al_id= ate= &group=25&gblog=1 36&id= Croton persimilis IVI = % L. cochinchinensis IVI = % Tectona grandis IVI =20.21 Oroxylum indicum IVI = % Alstonia scholaris IVI = % Sapling al_id=90 g.php?id= %20option/search_detail.asp?botanic_id= pubescens Croton persimilis IVI =23.02 % Anogeissus acuminata IVI =15.12 % Antidesma sootepense IVI =14.15 % P. macrocarpus IVI =10.70 % Holarrhena pubescens IVI =10.70 % Seedling al_id=90 / %88%E0%B8%B3%E0%B8%95%E0%B9%89%E0%B8% d= %B2%E0 %B8%99% E0%B8%9 8%E0%B 8%A3%E0 %B8%93 %E0%B8% B5%E0% B8%AA%E 0%B8 %B2%E0%B8%A3 / Croton persimilis IVI =32.11 % A. microsperma IVI =19.98 % Ficus hispida IVI =18.90 % Mitragyna rotundifolia IVI =14.62 % Phyllanthus pulcher IVI =12.48 %

15 Result & Discussion Species composition (continue) Number of plant species in each dominant family / / %B2%E0 %B8%99% E0%B8%9 8%E0%B 8%A3%E0 %B8%93 %E0%B8% B5%E0% B8%AA%E 0%B8%B2 %E0%B8 %A / (Albizia odoratissima) (Oroxylum indicum) (Phyllanthus pulcher) (Adenanthera (Antidesma sootepense) (Lagerstroemia cochinchinensis) (Bombax anceps) (Mallotus philippensis) microsperma) (Pterocarpus (Fernandoa adenophylla) (Grewia eriocarpa) (Croton persimilis) (Lagerstroemia macrocarpa) (Aporosa villosa) neuranthum) (Falconeria (Sterculiamacrocarpus) insignis) pexa) (Macaranga indica)(stereospermum

16 Result & Discussion Natural regeneration Based on DBH class distribution showed negative exponential growth form or L - shape.

17 DBH of tree 0 DBH of tree > Ficus hispida > DBH of tree (cm) No.of spp. 20 No. of spp. No. of spp No. of spp. Result & Discussion Natural regeneration of TREE 40 Croton persimilis 10 Lagerstroemia cochinchinensis DBH of tree Lagerstroemia tomentosa 5

18 Result & Discussion Natural regeneration of TREE, SAPLING and SEEDLING Density distribution comparing of pioneer species and native species 1600 Pioneer species Stems/rai stems/rai Croton persimilis species Ficus hispida Native species seedling sapling tree Tectona grandis Lagerstroemia Lagerstroemia cochinchinensis tomentosa Species

19 Conclusion 1. Forest structure and species composition Species composition ; 34 families 81 genera 101 species Tree ; Croton persimilis, Lagerstroemia cochinchinensis, Tectona grandis Sapling ; Croton persimilis, Anogeissus acuminata, Antidesma sootepense Seedling ; Croton persimilis, Adenanthera microsperma, Ficus hispida

20 Conclusion 2. Natural regeneration

21 Recommendation Native species should be plant in this area to accelerate succession process.

22 THANK YOU FOR YOUR ATTENTION Assoc. Prof. Dokrak Marod Mr. Adrian Pieper Mr. Inn Laboratory of forest ecology Forester 75,76,77 My friend Forester 78 ^_^