Carbon allocation in a Bornean tropical rainforest without dry seasons

Ayumi Katayama, Tomonori Kume, Hikaru Komatsu, Taku M. Saitoh, Mizue Ohashi, Michiko Nakagawa, Masakazu Suzuki, Kyoichi Otsuki, Tomo'omi Kumagai

研究成果: Contribution to journalArticle査読

16 被引用数 (Scopus)

抄録

To clarify characteristics of carbon (C) allocation in a Bornean tropical rainforest without dry seasons, gross primary production (GPP) and C allocation, i.e., above-ground net primary production (ANPP), aboveground plant respiration (APR), and total below-ground carbon flux (TBCF) for the forest were examined and compared with those from Amazonian tropical rainforests with dry seasons. GPP (30.61 MgC ha-1 year-1, eddy covariance measurements; 34.40 MgC ha-1 year-1, biometric measurements) was comparable to those for Amazonian rainforests. ANPP (6.76 MgC ha-1 year-1) was comparable to, and APR (8.01 MgC ha-1 year-1) was slightly lower than, their respective values for Amazonian rainforests, even though aboveground biomass was greater at our site. TBCF (19.63 MgC ha-1 year-1) was higher than those for Amazonian forests. The comparable ANPP and higher TBCF were unexpected, since higher water availability would suggest less fine root competition for water, giving higher ANPP and lower TBCF to GPP. Low nutrient availability may explain the comparable ANPP and higher TBCF. These data show that there are variations in C allocation patterns among mature tropical rainforests, and the variations cannot be explained solely by differences in soil water availability.

本文言語英語
ページ(範囲)505-515
ページ数11
ジャーナルJournal of Plant Research
126
4
DOI
出版ステータス出版済み - 7 2013

All Science Journal Classification (ASJC) codes

  • Plant Science

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