Publications

Our work spans tropical and boreal forests, urban ecosystems, and global synthesis studies. Full text of most articles is available via the links below or upon request at pantana.t@chula.ac.th Team members' names are in bold. * denotes corresponding author(s).

Selected Highlights

- Zuidema P. et al. Pantropical tree rings show small effects of drought on stem growth. Science (July 2025)

- Teo HC. et al. Reduction of deforestation by agroforestry in high carbon stock forests of Southeast Asia. Nature Sustainability (January 2025)

- Poyatos R. et al. Global transpiration data from sap flow measurements: the SAPFLUXNET database. Earth System Science Data (2021)

- Gutierrez Lopez J. et al. How tree species, tree size, and topographical location influenced tree transpiration during the historic 2018 drought. Global Change Biology (2021)

- Tor-ngern P., Oren R.* et al. Increases in atmospheric CO₂ have little influence on transpiration of a temperate forest canopy. New Phytologist (2015)

Peer-Reviewed Research Articles

2026

• Kasikam, N., Yarnvudhi, A., Leksungnoen, N., Näsholm, T., Tor-ngern, P.* Effects of long term canopy change on regulating ecosystem services in a tropical urban park. Scientific Reports (January 2026)  16, 5077 https://doi.org/10.1038/s41598-026-36098-w

2025

• Ampornpitak, R., Unawong, W., Lim, H., Tor-ngern, P.* Species-specific water-use characteristics of trees in old-growth and secondary tropical forests of Thailand. Biotropica (August 2025) 57, e70101. https://doi.org/10.1111/btp.70101

• Chen, Y-J.*, Maenpuen, P., Katabuchi, M.*, Tor-ngern, P., Palmroth, S., Zhang, S-B., Xiao, Y-X., Liu, M., Oren, R.* Hydraulic conductivity-induced systematic parameter variation in a widely used thermal dissipation sap-flow technique. New Phytologist (August 2025) 248(2), 637-655. https://doi.org/10.1111/nph.70488 

• Zuidema P.* et al. Pantropical tree rings show small effects of drought on stem growth. Science (July 2025) 389(6759) 532-538. https://doi.org/10.1126/science.adq6607 

• Han, L., Tinprabat, P., Maenpuen, P.*, Chanthorn, W.*, Marod, D., Tor-ngern, P., et al. Lianas exhibit lower leaf drought resistance than trees in both tropical dry and wet forests in Thailand. Flora (April 2025). https://doi.org/10.1016/j.flora.2025.152730

• Groenendijk, P.* et al. The importance of tropical tree-ring chronologies for global change research. Quaternary Science Reviews (February 2025). https://doi.org/10.1016/j.quascirev.2025.109233

• Teo, HC.*, et al. Reduction of deforestation by agroforestry in high carbon stock forests of Southeast Asia. Nature Sustainability (January 2025). https://doi.org/10.1038/s41893-025-01532-w

• Fransson, P.*, Lim, H., Zhao, P., Tor-ngern, P., et al. An eco-physiological model of forest photosynthesis and transpiration under combined nitrogen and water limitation. Tree Physiology (January 2025). https://doi.org/10.1093/treephys/tpae168

2024

• Kulsirilak, N., Ampornpitak, R., Kasikam, N., Tor-ngern, P.* Investigating leaf gas exchanges of common trees in two urban parks with different periods of establishment in Bangkok, Thailand. Tropical Ecology (January 2024). https://doi.org/10.1007/s42965-024-00343-y

2023

• Ampornpitak, R., Nathalang, A., Tor-ngern, P.* Water-use characteristics of Syzygium antisepticum and Adinandra integerrima in a secondary forest of Khao Yai National Park in Thailand. PeerJ (November 2023). http://doi.org/10.7717/peerj.16525

• Ampornpitak, R., Khobpee, P., Unawong, W., et al. An urban tree (Tabebuia argentea) exhibits higher sensitivity to environmental conditions than an urban palm (Ptychosperma macarthurii) in the same roof garden. Applied Environmental Research (March 2023).

2022

• Yarnvudhi, A., Leksungnoen, N.*, Andriyas, T., Tor-ngern, P., et al. Assessing the cooling and air pollution tolerance among urban tree species in a tropical climate. Plants (November 2022). https://doi.org/10.3390/plants11223074

• Yaemphum, S., Unawong, W., Tor-ngern, P.* Sapwood area of 14 common tree species in a successional tropical forest in Thailand. Forestry: An International Journal of Forest Research (October 2022). https://doi.org/10.1093/forestry/cpab054

• Unawong, W., Yaemphum, S., et al. Variations in leaf water status and drought tolerance of dominant tree species among three successional forests in Southeast Asia. Scientific Reports (April 2022). https://doi.org/10.1038/s41598-022-10988-1

2021

• Gutierrez Lopez, J.*, Tor-ngern, P., et al. How tree species, tree size, and topographical location influenced tree transpiration in northern boreal forests during the historic 2018 drought. Global Change Biology (July 2021). https://doi.org/10.1111/gcb.15601

• Poyatos R.*, et al. Global transpiration data from sap flow measurements: the SAPFLUXNET database. Earth System Science Data (June 2021). https://doi.org/10.5194/essd-13-2607-2021

• Tor-ngern, P.*, et al. Variation of leaf-level gas exchange rates and leaf functional traits of dominant trees across three successional stages in a Southeast Asian tropical forest. Forest Ecology and Management (March 2021).

• Rodtassana, C., et al. Different responses of soil respiration to environmental factors across forest stages in a Southeast Asian forest. Ecology and Evolution (October 2021). https://doi.org/10.1002/ece3.8248

• Andriyas, T., Leksungnoen, N., Tor-ngern, P.* Comparison of water-use characteristics of tropical tree saplings with implications for forest restoration. Scientific Reports (January 2021). https://doi.org/10.1038/s41598-021-81334-0

• Tarvainen, L.*, et al. Limited vertical CO₂ transport in stems of mature boreal Pinus sylvestris trees. Tree Physiology (January 2021). https://doi.org/10.1093/treephys/tpaa113

2020

• Vernay, A.*, et al. Estimating canopy gross primary production by combining phloem stable isotopes with canopy and mesophyll conductances. Plant, Cell and Environment (June 2020). https://doi.org/10.1111/pce.13835

• Kozii, N., et al. Partitioning growing season water balance within a forested boreal catchment using sap flux, eddy covariance, and a process-based model. Hydrology and Earth System Sciences (June 2020).

• Tor-ngern, P.*, Leksungnoen, N. Investigating carbon dioxide absorption by urban trees in a new park of Bangkok, Thailand. BMC Ecology (April 2020). https://doi.org/10.1186/s12898-020-00289-4

2018

• Tor-ngern, P.*, Puangchit, L. Effects of varying soil and atmospheric water deficit on water use characteristics of tropical street tree species. Urban Forestry & Urban Greening (December 2018).

• Ward, E.J.*, et al. Evapotranspiration and water yield of a pine-broadleaf forest are not altered by long-term atmospheric CO₂ enrichment. Global Change Biology (October 2018). https://doi.org/10.1111/gcb.14363

• Tor-ngern, P.*, et al. Water balance of pine forests: synthesis of new and published results. Agricultural and Forest Meteorology (September 2018).

• Tarvainen, L.*, et al. Photosynthetic refixation varies along the stem and reduces CO₂ efflux in mature boreal Pinus sylvestris trees. Tree Physiology (April 2018).

• Tor-ngern, P.*, et al. Comparison of water-use characteristics of landscape tree and palm species in a tropical roof garden. Urban Ecosystems (February 2018). https://doi.org/10.1007/s11252-018-0735-0

• Tor-ngern, P.*, Jan-uthai, V., Leksungnoen, N. Quick recovery of leaf photosynthesis and fruit quality from soil water deficit of Citrus aurantiifolia growing in a city. EnvironmentAsia (January 2018).

2017

• Tor-ngern, P.*, et al. Ecophysiological variation of transpiration of pine forests: synthesis of new and published results. Ecological Applications (January 2017).

• Tor-ngern, P. Impacts of artificial soil drought on aboveground biomass of some Bangkok street tree species. Naresuan University Journal: Science and Technology (February 2017).

2016

• Tor-ngern, P.*, Panha, S. Responses of water use to atmospheric demand in three common street tree species in Bangkok. Environment and Natural Resources Journal (September 2016).

• Tor-ngern, P.*, Panha, S. Species-specific responses of water use by urban trees to artificial soil drought. Applied Environmental Research (March 2016).

2015

• Henriksson, N.*, et al. Stem compression reversibly reduces phloem transport in Pinus sylvestris trees. Tree Physiology (October 2015).

• Lim, H.*, et al. Inter-annual variability of precipitation constrains the production response of boreal Pinus sylvestris to nitrogen fertilization. Forest Ecology and Management (July 2015).

• Tor-ngern, P., Oren, R.*, et al. Increases in atmospheric CO₂ have little influence on transpiration of a temperate forest canopy. New Phytologist (January 2015).

Books/Book Chapters