Energy Fluxes and Evapotranspiration in a Rubber Agroecosystem of the Southern Thailand

Watcharee  RUAIRUEN; Gilberto J.  FOCHESATTO; Poonpipope  KASEMSAP; Chompunut  CHAYAWAT

doi:10.48048/wjst.2021.6541

Authors

Watcharee RUAIRUEN Environmental Science and Technology Program, Faculty of Science and Technology, Suratthani Rajabhat University, Surat Thani 84100, Thailand
Gilberto J. FOCHESATTO Department of Atmospheric Sciences, Geophysical Institute and College of Natural Science and Mathematics, University of Alaska Fairbanks, Fairbanks, Alaska 99775, USA
Poonpipope KASEMSAP Department of Horticulture, Faculty of Agriculture, Kasetsart University, Bangkok 10900, Thailand
Chompunut CHAYAWAT DORAS Centre, Kasetsart University, Bangkok 10900, Thailand

DOI:

https://doi.org/10.48048/wjst.2021.6541

Keywords:

Evapotranspiration, Energy fluxes, Rubber agroecosystem, Eddy covariance, Southern Thailand, Evapotranspiration

Abstract

Evapotranspiration (ET) plays an important role in land surface atmosphere interaction which significantly drives hydrological cycle, vegetation functioning resulting to agricultural production. In this study, observations of energy fluxes, energy partitioning, and evapotranspiration (ET) were conducted on a monoclonal stand of rubber trees (Hevea brasiliensis) plot (clone RRIM 600) in 2017. The forestry population was 17 years old and had been tapped continuously over 10 years for latex harvesting at the Rubber Estate Organization station in Na Bon district, Nakhon Si Thammarat province in Thailand. The ET rate and associated energy fluxes were determined by means of eddy covariance (EC) method and complemented by micrometeorological measurements at 25 m tall tower. Tree stands were spaced on plots of 3.0×7.0 m² with mean canopy height of 22 m. Data were collected during January 1 to September 27, 2017. Results found that the energy balance closure of the rubber agroecosystem was approximately 78 %. Overall, the latent heat (LE) flux was the main term of energy exchange (58 - 60 %) due to its dominance across the growing season. The ratios of the latent heat (LE) and sensible heat (H) to net radiation were 0.58 and 0.24 throughout the period of study, respectively. Moreover, the daily mean of evapotranspiration (ET) was 7.16 mm.d^-1 over the whole period of this study. However, a slightly higher rate of daily mean ET (7.35 mm.d^-1) was indicated during the foliage period than during the leaf senescence period due to sufficient soil moisture associated with high rate of seasonal precipitation. It is concluded, that ET is an extremely sensitive variable to understand in energy flow in this ecosystems as well as a precursor for presetting condition for droughts prognosis (forecast) in a rubber ecosystem.

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Author Biography

Watcharee RUAIRUEN, Environmental Science and Technology Program, Faculty of Science and Technology, Suratthani Rajabhat University, Surat Thani 84100, Thailand

Faculty of Science and Technology

References

D Workman. Natural Rubber Exports by Country. World’s top export, Available at: http://www.worldstopexports.com/natural-rubber-exports-country/3354, accessed January 2019.

Thailand Foreign Agricultural Trade Statistics 2017. Office of Agriculture Economics, Available at: http://www.oae.go.th/assets/portals/1/files/jounal/2561/thailandtradestat2560.pdf, accessed February 2019.

ZL Wu, HM Liu and LY Liu. Rubber cultivation and sustainable development in Xishuangbanna, China. Int. J. Sustain. Dev. World Ecol. 2011; 8, 337-45.

ZH Tan, YP Zhang, QH Song, WJ Liu, XB Deng, JW Tang, Y Den, WJ Zhou, LY Yang, GR Yu, XM Sun and NS Liang. Rubber plantations act as water pumps in tropical China. Geophys. Res. Lett. 2011, 38, L24406.

TW Giambelluca, RG Mudd, W Liu, AD Ziegler, N Kobayashi, T Kumagai, Y Miyazawa, TK Lim, M Huang, J Fox, S Yin, SV Mak and P Kasemsap. Evapotranspiration of rubber (Hevea brasiliensis) cultivated at two plantation sites in Southeast Asia. Water Resour. Res. 2016; 52, 660-79.

AD Ziegler, J Phelps, JQ Yean, EL Webb, D Lawrence, JM Fox, TB Bruun, SJ Leisz, CM Ryan, W Dressler, O Mertz, U Pascual, C Padoch and LP Koh. Carbon outcomes of major land-cover transitions in SE Asia: Great uncertainties and REDD+ policy implications. Global Change Biol. 2012; 18, 3087-99.

J Fox. Through the technology lens: The expansion of rubber and its implications in montane mainland Southeast Asia. Conservat. Soc. 2014; 12, 418-24.

SO Chung and R Horton. Soil heat and water flow with a partial surface mulch. Water Resour. Res. 1987; 23, 2175-86.

HJH Franssen, R Stöckli, I Lehner, E Rotenberg and SI Seneviratne. Energy balance closure of eddy-covariance data: A multisite analysis for European FLUXNET stations. Agr. Forest Meteorol. 2010; 150, 1553-67.

R McGloin, L Šigut, K Havránková, J Dušek, M Pavelka and P Sedlák. Energy balance closure at a variety of ecosystems in Central Europe with contrasting topographies. Agr. Forest Meteorol. 2018; 248, 418-31.

D Starkenburg, S Metzger, GJ Fochesatto, JG Alfieri, R Gens, A Prakash and J Cristobal. Assessment of de-spiking methods for turbulent flux computations in high latitude forest canopies using sonic anemometers. J. Atmos. Ocean. Tech. 2016; 33, 2001-13.

CJ Moore. Frequency response corrections for eddy correlation systems. Boundary-Layer Meteorol. 1986; 37, 17-35.

G Burba, A Schmidt, RL Scott, T Nakai, J Kathilankal, G Fratini, C Hanson, B Law, DK McDermitt, R Eckles, M Furtaw and M Velgersdyk. Calculating CO2 and H2O eddy covariance fluxes from an enclosed gas analyzer using an instantaneous mixing ratio. Global Change Biol. 2012; 18, 385-99.

D Starkenburg, GJ Fochesatto, A Prakash, J Cristóbal, R Gens and DL Kane. The role of coherent flow structures in the sensible heat fluxes of an Alaskan boreal forest. J. Geophys. Res. Atmos. 2013; 118, 8140-55.

D Starkenburg, GJ Fochesatto, J Cristóbal, A Prakash, R Gens, JG Alfieri, H Nagano, Y Harazono, H Iwata and DL Kane. Temperature regimes and turbulent heat fluxes across a heterogeneous canopy in an Alaskan boreal forest. J. Geophys. Res. Atmos. 2015; 120, 1348-60.

K Wilson, A Goldstein, E Falge, M Aubinet, D Baldocchi, P Berbigier, C Bernhofer, R Ceulemans, H Dolman, C Field, A Grelle, A Ibrom, BE Law, A Kowalski, T Meyers, J Moncrieff, R Monson, W Oechel, J Tenhunen, R Valentini and S Verma. Energy balance closure at FLUXNET sites. Agr. Forest Meteorol. 2002; 113, 223-43.

J Kochendorfer, EG Castillo, E Haas, WC Oechel and PUK Tha. Net ecosystem exchange, evapotranspiration and canopy conductance in a riparian forest. Agr. Forest Meteorol. 2011; 151, 544-53.

X Ma, Q Feng, Y Su, T Yu and H Jin. Forest evapotranspiration and energy flux partitioning based on eddy covariance methods in an arid desert region of Northwest China. Adv. Meteorol. 2017, 2017, 1619047.

PC Stoy, M Mauder, T Foken, B Marcolla, E Boegh, A Ibrom, MA Arain, A Arneth, M Aurela, C Bernhofer, A Cescatti, E Dellwik, P Duce, D Gianelle, EV Gorsel, G Kiely, A Knohl, H Margolis and A Varlagin. A data-driven analysis of energy balance closure across FLUXNET research site: The role of landscape scale heterogeneity. Agr. Forest Meteorol. 2013; 152, 137-52.

M Sanwangsri, P Hanpattanakit and A Chidthaisong. Variations of energy fluxes and ecosystem evapotranspiration in a young secondary dry dipterocarp forest in Western Thailand. Atmosphere 2017, 8, 152.

JM Sánchez, V Caselles and EM Rubio. Analysis of the energy balance closure over a FLUXNET boreal forest in Finland. Hydrol. Earth Syst. Sci. 2010; 14, 1487-97.

W Ruairuen, GJ Fochesatto, EB Sparrow, W Schnable, M Zhang and Y Kim. Evapotranspiration cycles in a high latitude agroecosystem: Potential warming role. PloS One 2015; 10, e0137209.

W Ruairuen, GJ Fochesatto, M Bitelli, EB Sparrow, W Schnable and M Zhang. Evapotranspiration in Northern agro-ecosystems: Numerical simulation and experimental comparison. In: D Bucur (Ed.). Current Perspective to Predict Actual Evapotranspiration, IntechOpen, 2017, p. 65-84.

D Charuchittipan, W Babel, M Mauder, JP Leps and T Foken. Extension of the averaging time in eddy-covariance measurements and its effect on the energy balance closure. Boundary-Layer Meteorol. 2014; 152, 303-27.

F Eder, FD Roo, K Kohnert, RL Desjardins, HP Schimid and M Mauder. Evaluation of two energy balance closure parametrizations. Boundary-Layer Meteorol. 2014; 151, 195-219.

Z Gao, H Liu, GG Katul and T Foken. Non-closure of the surface energy balance explained by phase difference between vertical velocity and scalars of large atmospheric eddies. Environ. Res. Lett. 2017; 12, 034025.

M Zeri, LDA Sá, AO Manzi, AC Araujo, RG Aguiar, CV Randow, G Sampaio, FL Cardoso and CA Nobre. Variability of carbon and water fluxes following climate extremes over a tropical forest in Southwestern Amazonia. PloS One 2014; 9, e88130.

R Eshonkulov, A Poyda, J Ingwersen, A Pulatov and T Streck. Improving the energy balance closure over a winter wheat field by account for minor storage terms. Agr. Forest Meteorol. 2019; 264, 283-96.

S Kutikoff, X Lin, S Evett, P Gowda, J Moorhead, G Marek, P Colaizzi, R Aiken and D Brauer. Heat storage and its effect on the surface energy balance closure under advective conditions. Agr. Forest Meteorol. 2019; 265, 56-69.

R Leuning, HA Cleugh, SJ Zegelin and D Hughes. Carbon and water fluxes over a temperate Eucalyptus forest and a tropical wet/dry savanna in Australia: Measurements and comparison with MODIS remote sensing estimates. Agr. Forest Meteorol. 2005; 129, 151-73.

V Haverd, M Cuntz, R Leuning and H Keith. Air and biomass heat storage fluxes in a forest canopy: Calculation within a soil vegetation atmosphere transfer model. Agr. Forest Meteorol. 2007; 147, 125-39.

A Lindroth, M Molder and F Lagergren. Heat storage in forest biomass improves energy balance closure. Biogeosciences 2010; 7, 301-13.