Comparison of soil moisture dynamics between a tropical rain forest and a tropical seasonal forest in Southeast Asia: Impact of seasonal and year-to-year variations in rainfall

Tomo'omi Kumagai, Natsuko Yoshifuji, Nobuaki Tanaka, Masakazu Suzuki, Tomonori Kume

研究成果: ジャーナルへの寄稿記事

35 引用 (Scopus)

抄録

We examined the impact of both seasonal and year-to-year variations in precipitation on simulated soil moisture dynamics at a tropical rain forest (TRF) site and a tropical seasonal forest (TSF) site in Southeast Asia, between which there is a clear difference in the precipitation regime, through a probabilistic ecohydrological model. All model parameters have apparent physical meaning and were obtained by field observations. Rainfall statistics as the primary model forcing terms were constructed from long-term rainfall records, and their analysis revealed a close relationship between drought and El Niño events at the TRF site and a long-term drying trend at the TSF site. The model results further demonstrated that the studied ecosystem's robustness (mainly concerning the plant water availability) are attributed to functional factors such as soil texture for the TRF site and rooting depth and the dry season use of water from the preceding wet season for the TSF site.

元の言語英語
記事番号W04413
ジャーナルWater Resources Research
45
発行部数4
DOI
出版物ステータス出版済み - 4 1 2009

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soil moisture
rainfall
soil texture
rooting
water availability
wet season
dry season
drought
comparison
Southeast Asia
tropical rain forest
ecosystem
water

All Science Journal Classification (ASJC) codes

  • Water Science and Technology

これを引用

Comparison of soil moisture dynamics between a tropical rain forest and a tropical seasonal forest in Southeast Asia : Impact of seasonal and year-to-year variations in rainfall. / Kumagai, Tomo'omi; Yoshifuji, Natsuko; Tanaka, Nobuaki; Suzuki, Masakazu; Kume, Tomonori.

:: Water Resources Research, 巻 45, 番号 4, W04413, 01.04.2009.

研究成果: ジャーナルへの寄稿記事

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abstract = "We examined the impact of both seasonal and year-to-year variations in precipitation on simulated soil moisture dynamics at a tropical rain forest (TRF) site and a tropical seasonal forest (TSF) site in Southeast Asia, between which there is a clear difference in the precipitation regime, through a probabilistic ecohydrological model. All model parameters have apparent physical meaning and were obtained by field observations. Rainfall statistics as the primary model forcing terms were constructed from long-term rainfall records, and their analysis revealed a close relationship between drought and El Ni{\~n}o events at the TRF site and a long-term drying trend at the TSF site. The model results further demonstrated that the studied ecosystem's robustness (mainly concerning the plant water availability) are attributed to functional factors such as soil texture for the TRF site and rooting depth and the dry season use of water from the preceding wet season for the TSF site.",
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