Indicator species for predicting site quality of teak plantations in Phrae province, Thailand

Name: Narinthorn Jumwong

LCSH: Kasetsart University -- Dissertations. Ph.D. (Forestry) 2019

Classification :.LCCS: SD397.T4

LCSH: Kasetsart University. -- Faculty of Forestry -- Dissertations

LCSH: Teak -- Planting -- Thailand -- Phrae

LCSH: Forest site quality -- Thailand -- Phrae

Abstract: Site quality assessments of the teak plantations are based-on site index method and soil survey. The site index method, however, need the record of teak growth in each site, and it is difficult to evaluate the site quality and productivity of teak at the site lacking teak growth record and when we establish a new teak plantation. This research aimed to evaluate site quality for teak plantation by using plant indicators species. The study sites were located in 3 teak plantations belonging to the Forest Industry Organization (FIO) in Northern Thailand. Twenty four sample plots were laid to cover all the growth classes within the ages of 6-39 years. The site index of teak was established using the anamorphic technique at based age 30-yr-old. Associated species, the native species that are tree and shrub habits, were surveyed in the 24 plots and indicator species were classified using the Indicator Species Analysis (ISA) and Two Way Indicator Species Analysis (TWINSPAN). The relationship between indicator species and environmental factors was analyzed by the Generalized Linear Model (GLM). Site quality of teak was divided into 3 site index classes as; 24, 21, and 18, for good, moderate, and poor site qualities, respectively. 76 associated species belonging to 21 families. The dominant family was Fabaceae with a total of 15 species, followed by Malvaceae (6 species) and Phyllanthaceae (6 species). The results of ISA indicated the significant indicator species under the good site class were Streblus ilicifolius, Lagerstroemia floribunda, Dalbergia cana and Lagerstroemia calyculata; while Schleichera oleosa and Dalbergia nigrescens were presented at poor site class, respectively. The results from TWINSPAN supported Streblus ilicifolius, Lagerstroemia floribunda and Schleichera oleosa were obvious indicators. Each indicator species distribution influenced by various relationships with environmental factors, which soil pH and N were the main factors to distribute all indicator species to 3 relationships. First, the indicator species positively associated with soil pH and negatively associated with N were Streblus ilicifolius and Dalbergia nigrescens. Second, the indicator species positively associated with soil pH and N were Lagerstroemia floribunda and Schileichera oleosa. Third, the indicator species negatively associated with soil pH and positively associated N were Dalbergia cana and Lagerstroemia calyculata. The GLM analysis revealed P, Ca and elevation influenced indicator species distribution. The results suggest that indicator species for good site indicate the site is suitable to plant teak. On the other hand, the indicator species for poor site indicate that some silvicultural management are necessities for teak plantation. In bare land, the people can apply the relationship of theses indicator species and environmental factors to determine the quality of the site.

Kasetsart University. Office of the University Library

Address: Bangkok

Email: tdckulib@ku.ac.th

Name: Chongrak Wachrinrat

Role: Thesis Advisor

Name: Sarawood Sungkaew

Role: Thesis CO-Advisor

Name: Atchara Teerawatananon

Role: Thesis CO-Advisor

Created: 2019

Modified: 2025-06-30

Issued: 2025-06-30

วิทยานิพนธ์/Thesis

application/pdf

URL: https://www.lib.ku.ac.th/KUthesis/2562/narinthorn-jum-all.pdf

CallNumber: SD397.T4 .N37

eng

Spatial: Thailand Phrae

Spatial: Thailand Phrae

DegreeName: Doctor of Philosophy

Level: Doctoral Degraee

Descipline: Forestry

Grantor: Kasetsart University

©copyrights Kasetsart University

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