Autotrophic and heterotrophic respiration in needle fir and Quercus-dominated stands in a cool-temperate forest, central Korea

Na yeon Lee, Jin Woo Koo, Nam Jin Noh, Joon Kim, Yowhan Son

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

To investigate annual variation in soil respiration (RS) and its components [autotrophic (RA) and heterotrophic (RH)] in relation to seasonal changes in soil temperature (ST) and soil water content (SWC) in an Abies holophylla stand (stand A) and a Quercus-dominated stand (stand Q), we set up trenched plots and measured RS, ST and SWC for 2 years. The mean annual rate of RS was 436 mg CO2 m-2 h-1, ranging from 76 to 1,170 mg CO2 m-2 h-1, in stand A and 376 mg CO2 m-2 h-1, ranging from 82 to 1,133 mg CO2 m-2 h-1, in stand Q. A significant relationship between RS and its components and ST was observed over the 2 years in both stands, whereas a significant correlation between RA and SWC was detected only in stand Q. On average over the 2 years, RA accounted for approximately 34% (range 17-67%) and 31% (15-82%) of the variation in RS in stands A and Q, respectively. Our results suggested that vegetation type did not significantly affect the annual mean contributions of RA or RH, but did affect the pattern of seasonal change in the contribution of RA to RS.

Original languageEnglish
Pages (from-to)485-495
Number of pages11
JournalJournal of Plant Research
Volume123
Issue number4
DOIs
Publication statusPublished - 2010

Keywords

  • Autotrophic respiration
  • Heterotrophic respiration
  • Partitioning
  • Soil respiration
  • Temperature sensitivity
  • Vegetation type

ASJC Scopus subject areas

  • Plant Science

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