Establishment and functional traits of plans on coastal sand dune, Southern Thailand

Name: Jakkaphong Thongsawi

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

Classification :.LCCS: QK364

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

LCSH: Coastal plants -- Environmental factors -- Thailand, Southern

LCSH: Coastal plant. -- Climatic factors -- Thailand, Southern

LCSH: Crops and climate

Abstract: This study was conducted at the Bang Boet coastal sand dune, Chumphon Province. Three objectives were set up as 1) to clarify the influence of shelter belt on plants establishment in coastal sand dune, 2) to clarify plant functional traits for their adaptive traits and 3) to clarify the forest dynamics due to the environmental changes. Permanent transect plots were established in natural coastal sand dune and man-mad shelter belt sites, then, the monitoring was done from 2012 to 2018. The ordination analysis was used to analyses plants and environment relationship, which was tested for statistical significance. The results showed that 42 species from 36 genera and 26 families of all woody plants were found. The species diversity index was moderate based on the Shannon–Wiener index (2.91). The stem density and basal area were 6,821 ± 1,535 stem ha-1 and 12.38 ± 2.65 m2 ha-1 , respectively. The dominant species based on the importance value index were Pandanus odorifer, Mischocarpus sundaicus and Syzygium antisepticum. Forest structure and species composition were significant difference among the groups, windward, leeward and back shelter belt. The distribution of woody plants was significantly affected with environmental factors, especially wind speed was the strongest predictor driving the observed pattern of species composition, followed by salt spray and soil properties. Species trait compositions and the community-weighted mean of specific leaf area, leaf thickness, and leaf toughness differed significantly between the windward and leeward sides. Specific leaf area plays an important role in terms of soil turnover and nutrient conservation, particularly on the leeward side. Forest dynamics varied among year, however, increased trends for species density, basal area and stem density were detected. The mean of recruitment rate higher than mortality rate, 10.48 ± 4.92 % yr-1 and 3.46 ± 1.60 % yr-1, respectively. The relationships between recruitment and mortality rates of dominant species in each period with the climatic variability were found, but both the magnitude and direction of the correlation coefficients varied. Therefore, to ensure success in restoration and conservation programs, management plans should focus on plant functional traits, specific conditions, and environmental factors.

Kasetsart University. Office of the University Library

Address: Bangkok

Email: tdckulib@ku.ac.th

Name: Dokrak Marod

Role: Thesis Advisor

Name: Sarawood Sungkaew

Role: Thesis Co-Advisor

Name: Mizunaga, Hiromi

Role: Thesis Co-Advisor

Created: 2019

Modified: 2025-06-29

Issued: 2025-06-29

วิทยานิพนธ์/Thesis

application/pdf

URL: https://www.lib.ku.ac.th/KUthesis/2562/jakkaphong-tho-all.pdf

CallNumber: QK364 .J34

eng

Spatial: Thailand, Southern

Spatial: Thailand, Southern

DegreeName: Doctor of Philosophy

Level: Doctoral Degree

Descipline: Forestry

Grantor: Kasetsart University

©copyrights Kasetsart University

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