Coarse woody debris respiration of Japanese red pine forests in Korea: controlling factors and contribution to the ecosystem carbon cycle

Tae Kyung Yoon, Nam Jin Noh, Seongjun Kim, Saerom Han, Yo Whan Son

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Coarse woody debris (CWD) respiration (R<inf>CWD</inf>) has strengths in efficient investigation of CWD decomposition rate and application into studies on ecosystem carbon (C) processes. Here, R<inf>CWD</inf> was investigated in two Japanese red pine forests to determine its response to environmental factors and CWD properties, and its contribution to the ecosystem C budget. Samples were collected based on CWD position (log or snag), species (pine or deciduous), and decay class in the Gwangneung pine forest (GPF) and the Mt. Jumbong pine forest (JPF), Korea. R<inf>CWD</inf> was measured at different incubation temperatures using a closed chamber system. Annual R<inf>CWD</inf> was estimated by developing and applying air temperature–R<inf>CWD</inf> regressions to air temperature data. In the GPF, annual estimated R<inf>CWD</inf> (g C kg<sup>−1</sup> year<sup>−1</sup>) was 29.54, 3.90, and 158.95 for pine logs, pine snags, and deciduous logs, respectively. In the JPF, R<inf>CWD</inf> was 49.09 for pine logs and 14.55 for pine snags. Temperature and CWD moisture were the main drivers of R<inf>CWD</inf>. CWD species also influenced R<inf>CWD</inf>, possibly by supporting different habitats for microbes and invertebrates. R<inf>CWD</inf> in the GPF accounted for approximately 4 % of heterotrophic respiration and 54 % of the CWD decomposition rate. In the JPF, R<inf>CWD</inf> was approximately equal to the CWD decomposition rate. R<inf>CWD</inf> might constitute a minor portion of the net ecosystem production (4 % in the GPF), because of the relatively high stand productivities and small CWD masses. In the GPF, the major factor influencing R<inf>CWD</inf> was mortality, whereas moisture had the greatest influence on R<inf>CWD</inf> in the JPF.

Original languageEnglish
Pages (from-to)723-734
Number of pages12
JournalEcological Research
Volume30
Issue number4
DOIs
Publication statusPublished - 2015 Jul 22

Fingerprint

Pinus densiflora
coarse woody debris
carbon cycle
coniferous forests
breathing
Korean Peninsula
respiration
ecosystems
ecosystem
snag
snags
wood logs
Pinus
decomposition
degradation
moisture
net ecosystem production
air temperature
temperature
environmental factor

Keywords

  • Coarse woody debris decomposition
  • Gwangneung
  • Mt. Jumbong
  • Net ecosystem production
  • Pinus densiflora

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics

Cite this

Coarse woody debris respiration of Japanese red pine forests in Korea : controlling factors and contribution to the ecosystem carbon cycle. / Yoon, Tae Kyung; Noh, Nam Jin; Kim, Seongjun; Han, Saerom; Son, Yo Whan.

In: Ecological Research, Vol. 30, No. 4, 22.07.2015, p. 723-734.

Research output: Contribution to journalArticle

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abstract = "Coarse woody debris (CWD) respiration (RCWD) has strengths in efficient investigation of CWD decomposition rate and application into studies on ecosystem carbon (C) processes. Here, RCWD was investigated in two Japanese red pine forests to determine its response to environmental factors and CWD properties, and its contribution to the ecosystem C budget. Samples were collected based on CWD position (log or snag), species (pine or deciduous), and decay class in the Gwangneung pine forest (GPF) and the Mt. Jumbong pine forest (JPF), Korea. RCWD was measured at different incubation temperatures using a closed chamber system. Annual RCWD was estimated by developing and applying air temperature–RCWD regressions to air temperature data. In the GPF, annual estimated RCWD (g C kg−1 year−1) was 29.54, 3.90, and 158.95 for pine logs, pine snags, and deciduous logs, respectively. In the JPF, RCWD was 49.09 for pine logs and 14.55 for pine snags. Temperature and CWD moisture were the main drivers of RCWD. CWD species also influenced RCWD, possibly by supporting different habitats for microbes and invertebrates. RCWD in the GPF accounted for approximately 4 {\%} of heterotrophic respiration and 54 {\%} of the CWD decomposition rate. In the JPF, RCWD was approximately equal to the CWD decomposition rate. RCWD might constitute a minor portion of the net ecosystem production (4 {\%} in the GPF), because of the relatively high stand productivities and small CWD masses. In the GPF, the major factor influencing RCWD was mortality, whereas moisture had the greatest influence on RCWD in the JPF.",
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KW - Coarse woody debris decomposition

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KW - Mt. Jumbong

KW - Net ecosystem production

KW - Pinus densiflora

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