TY - JOUR
T1 - Autotrophic and heterotrophic respiration in needle fir and Quercus-dominated stands in a cool-temperate forest, central Korea
AU - Lee, Na yeon
AU - Koo, Jin Woo
AU - Noh, Nam Jin
AU - Kim, Joon
AU - Son, Yowhan
N1 - Funding Information:
Acknowledgments This study was financially supported by the Korean Ministry of Environment’s ‘‘Eco-technopia 21 Project’’, by the Korea Science and Engineering Foundation’s ‘‘A3 Foresight Program (A301-K001)’’, and by a BK21 Research Fellowship from a Korea Research Foundation Grant funded by the Korean Government (MOEHRD, KRF-2006-A-2503).
PY - 2010
Y1 - 2010
N2 - 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.
AB - 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.
KW - Autotrophic respiration
KW - Heterotrophic respiration
KW - Partitioning
KW - Soil respiration
KW - Temperature sensitivity
KW - Vegetation type
UR - http://www.scopus.com/inward/record.url?scp=77953962468&partnerID=8YFLogxK
U2 - 10.1007/s10265-010-0316-7
DO - 10.1007/s10265-010-0316-7
M3 - Article
C2 - 20204671
AN - SCOPUS:77953962468
SN - 0918-9440
VL - 123
SP - 485
EP - 495
JO - Journal of Plant Research
JF - Journal of Plant Research
IS - 4
ER -