Publication: Effects of climate variability on monthly growth of Aglaia Odoratissima and Hydnocarpus Ilicifolia at the Sakaerat Environmental Research Station (SERS), Northeastern Thailand
Issued Date
2015
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Language
eng
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Mahidol University
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Faculty of Environment and Resource Studies. Mahidol University
Bibliographic Citation
Environment and Natural Resources Journal. Vol.13, No.1 (2015), 1-12
Suggested Citation
Kritsadapan Palakit, Khwanchai Duangsathaporn, Somkid Siripatanadilok, Pichit Lumyai Effects of climate variability on monthly growth of Aglaia Odoratissima and Hydnocarpus Ilicifolia at the Sakaerat Environmental Research Station (SERS), Northeastern Thailand. Environment and Natural Resources Journal. Vol.13, No.1 (2015), 1-12. Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/3167
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Title
Effects of climate variability on monthly growth of Aglaia Odoratissima and Hydnocarpus Ilicifolia at the Sakaerat Environmental Research Station (SERS), Northeastern Thailand
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Abstract
The research objective was to investigate effects of climate variability on monthly growth of
Aglaia odoratissima and Hydnocarpus ilicifolia which are the dominant tree species in lower canopies of
dry evergreen forest and generally found at the Sakaerat Environmental Research Station (SERS),
northeastern Thailand. For one year of the investigation, monthly data of tree leaf phenology, inside bark
diameter (IBD) and outside bark diameter (OBD) increments were examined. These data were related to
soil moisture content and climatic data of monthly rainfall, temperature and relative humidity. The results
showed that leaf phenology of A. odoratissima and H. ilicifolia illustrated leaf maturation throughout the
year, while young leaves were abundant in the rainy season and leaf abscission was rarely found
throughout the year. The IBD increments of these species on transverse surfaces could be detected
throughout the year and the most rapid increments were detected in the rainy season, while OBD
increments of both species shrank in the dry season and swelled in the rainy season. Using path analysis
(PA), climate variability was found to be significantly related to leaf phenology of A. odoratissima and
IBD increments of H. ilicifolia; and it was also significantly related to OBD increments of both species.