The Interaction between soil moisture and evapotranspiration at dry region of Lowland Dipterocarp forest in Peninsular Malaysia | [Bioscience Research • 2022]

Author(s):

1. Noor Atiqah Badaluddin: Faculty of Bioresources and Food Industry, Universiti Sultan Zainal Abidin,Besut Campus, 22200, Besut, Terengganu,Malaysia

2. Marryanna Lion: Forestry and Environment Division, Forest Research Institute Malaysia (FRIM),52109 Kepong, Selangor,Malaysia

3. Sheriza Mohd Razali: Institute of Tropical Forestry and Forest Products (INTROP), Universiti Putra Malaysia,43400 UPM Serdang, Selangor,Malaysia

4. Saiful Iskandar Khalit: Faculty of Bioresources and Food Industry, Universiti Sultan Zainal Abidin,Besut Campus, 22200, Besut, Terengganu,Malaysia

5. Yoshiko Kosugi: Graduate School of Agriculture, Kyoto University,606-8502,Japan

6. Siti Aisah Shamsuddin: Forestry and Environment Division, Forest Research Institute Malaysia (FRIM),52109 Kepong, Selangor,Malaysia

7. Ahmad Zaidi Hampden: School of Civil Engineering,UniversitiTeknologi MARA, Kampus Samarahan, Jalan Meranek, 94300 Kota Samarahan, Sarawak,Malaysia

Abstract:

Evapotranspiration (ET) is responsible for nearly 60% of global precipitation. Understanding the behaviour of ET under the influence of some meteorological variables is essential to predict how tropical rainforests will react to climate change. Research was conducted in lowland dipterocarp forest in Peninsular Malaysia, known as Pasoh Forest Reserve (FR), to assess the ET rate using the eddy covariance method (EC). Meteorological variables such as rainfall amount, soil temperature, volumetric soil water content (VSWC), vapor pressure deficit (VPD), and solar radiation are recorded and divided into the monsoon season. Rainfall varies throughout the season as Malaysia experiences a weak El Niño event in late 2019 and an early La Niña stage in mid to late 2020. The soil temperature shows consistent values in both the wet and dry seasons, varying between 24.75°C (±0.33) and 26.39°C (±0.14). Soil moisture is an important relationship between rainfall, surface water, and soil water, with spatiotemporal variations caused by various hydrologic processes such as evapotranspiration. The results show that rainfall and VSCW are synchronized in all seasons, even in the dry season with low rainfall, such as February 2019 indicating. This illustrates that precipitation does not affect the stability of ET since the forest can transpire and exchange water throughout the dry season. The findings of this study could serve as a benchmark to better understand the behaviour of tropical forests and resistance to the potential impacts of climate change in the future

Page(s): 1940-1945

DOI: DOI not available

Published: Journal: Bioscience Research, Volume: 19, Issue: 4, Year: 2022

Keywords:

sustainability , rainfall , Monsoon , Tropical forest

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