Long-term variation in soil moisture in Pasoh Forest Reserve, a lowland tropical rainforest in Malaysia
Clarifying variations in soil moisture is an important part of hydrological and ecological studies in tropical rainforests. Volumetric soil water content (VSWC) was measured at depths of 10, 20 and 30 cm at Pasoh Forest Reserve (PFR) in Peninsular Malaysia for 12 years. VSWC ranged from 0.280–0.442...
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oai:http:--agris.upm.edu.my:0-12842Long-term variation in soil moisture in Pasoh Forest Reserve, a lowland tropical rainforest in MalaysiaTakanashi, S.Kosugi, Y.Niiyama, K.S. Siti AisahNoguchi, S.Lion, M.Tani, M.Soil moistureTropical rain forestsSoil water contentForest reservesMonsoon climateRainfallPrecipitationDroughtFloweringClarifying variations in soil moisture is an important part of hydrological and ecological studies in tropical rainforests. Volumetric soil water content (VSWC) was measured at depths of 10, 20 and 30 cm at Pasoh Forest Reserve (PFR) in Peninsular Malaysia for 12 years. VSWC ranged from 0.280–0.442 m3 m-3 (mean ± standard error; 0.373 ± 0.001 m3 m-3) and was affected not only by the south-west and north-east monsoons but also by El Niño and La Niña events. Mean VSWC was high during La Niña events and low during El Niño events. In a normal El Niño/Southern Oscillation (ENSO) phase, VSWC showed both low and high conditions. An antecedent precipitation index (API) was calculated using 20 years of rainfall data. API90 ranged from 1.2–257.3 mm (25.4 ± 0.2 mm). The variations in API90 followed a similar pattern to variations in the VSWC. API90 can be used to estimate soil moisture conditions as a drought indicator. An API90 of less than 10 mm lasted more than 14 successive days during the normal ENSO phases when five mass flowerings occurred at PFR from 1995–2014.2017-03-17T02:05:02Z2017-03-17T02:05:02Z2016Journal ContributionArticleNon-RefereedJournal of Tropical Forest Science (Malaysia), 28, p. 324-3330128-1283http://agris.upm.edu.my:8080/dspace/handle/0/12842MY2017050331enhttps://www.frim.gov.my/v1/jtfsonline/jtfs/v28n5/324-333.pdfMalaysiahttp://www.oceandocs.org/license |
| institution |
AGRIS |
| collection |
AGRIS |
| language |
English |
| topic |
Soil moisture Tropical rain forests Soil water content Forest reserves Monsoon climate Rainfall Precipitation Drought Flowering |
| spellingShingle |
Soil moisture Tropical rain forests Soil water content Forest reserves Monsoon climate Rainfall Precipitation Drought Flowering Takanashi, S. Kosugi, Y. Niiyama, K. S. Siti Aisah Noguchi, S. Lion, M. Tani, M. Long-term variation in soil moisture in Pasoh Forest Reserve, a lowland tropical rainforest in Malaysia |
| description |
Clarifying variations in soil moisture is an important part of hydrological and ecological studies in tropical rainforests. Volumetric soil water content (VSWC) was measured at depths of 10, 20 and 30 cm at Pasoh Forest Reserve (PFR) in Peninsular Malaysia for 12 years. VSWC ranged from 0.280–0.442 m3 m-3 (mean ± standard error; 0.373 ± 0.001 m3 m-3) and was affected not only by the south-west and north-east monsoons but also by El Niño and La Niña events. Mean VSWC was high during La Niña events and low during El Niño events. In a normal El Niño/Southern Oscillation (ENSO) phase, VSWC showed both low and high conditions. An antecedent precipitation index (API) was calculated using 20 years of rainfall data. API90 ranged from 1.2–257.3 mm (25.4 ± 0.2 mm). The variations in API90 followed a similar pattern to variations in the VSWC. API90 can be used to estimate soil moisture conditions as a drought indicator. An API90 of less than 10 mm lasted more than 14 successive days during the normal ENSO phases when five mass flowerings occurred at PFR from 1995–2014. |
| format |
Journal Contribution |
| author |
Takanashi, S. Kosugi, Y. Niiyama, K. S. Siti Aisah Noguchi, S. Lion, M. Tani, M. |
| author_facet |
Takanashi, S. Kosugi, Y. Niiyama, K. S. Siti Aisah Noguchi, S. Lion, M. Tani, M. |
| author_sort |
Takanashi, S. |
| title |
Long-term variation in soil moisture in Pasoh Forest Reserve, a lowland tropical rainforest in Malaysia |
| title_short |
Long-term variation in soil moisture in Pasoh Forest Reserve, a lowland tropical rainforest in Malaysia |
| title_full |
Long-term variation in soil moisture in Pasoh Forest Reserve, a lowland tropical rainforest in Malaysia |
| title_fullStr |
Long-term variation in soil moisture in Pasoh Forest Reserve, a lowland tropical rainforest in Malaysia |
| title_full_unstemmed |
Long-term variation in soil moisture in Pasoh Forest Reserve, a lowland tropical rainforest in Malaysia |
| title_sort |
long-term variation in soil moisture in pasoh forest reserve, a lowland tropical rainforest in malaysia |
| publishDate |
2017 |
| url |
http://agris.upm.edu.my:8080/dspace/handle/0/12842 |
| _version_ |
1819284984805982208 |
| score |
13.4562235 |