Moisture sensitivity of ecosystem respiration: Comparison of 14 forest ecosystems in the Upper Great Lakes Region, USA

A. Noormets, A. R. Desai, B. D. Cook, E. S. Euskirchen, D. M. Ricciuto, K. J. Davis, P. V. Bolstad, H. P. Schmid, C. V. Vogel, E. V. Carey, H. B. Su, J. Chen

Research output: Contribution to journalArticle

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Abstract

Ecosystem respiration (ER) was measured with the eddy covariance technique in 14 forest ecosystems in the Upper Great Lakes Region during the growing seasons of 2002 and 2003. The response of ER to soil temperature and moisture was analyzed using empirical models. On average, ER was higher in the intermediate and young than in the mature stands, and higher in hardwood than in conifer stands. The seasonal mean temperature-normalized respiration rate (R10) ranged from 1 to 3 μmol CO2 m-2 s-1 and seasonal mean activation energy (Ea) from 40 to 110 kJ mol-1. The variation in the residuals of temperature response function of ER was best explained by soil moisture content. ER showed higher temperature sensitivity (as indicated by lower Ea) in the young than in the mature stands of coniferous forests, but not in the hardwood forests. The inclusion of soil moisture as an explicit driver of R10 explained an additional 8% (range 0-21%) of variability in ER. Significant moisture sensitivity of ER was detected in only 5 out of 20 site-years and it was associated with bimodal soil moisture distribution. Moisture sensitivity could partially be predicted from statistical moments kurtosis and interquartile range. The data implied greater moisture sensitivity with increasing stand age, possibly due to faster depletion of soil water supplies from a greater evaporative surface in the older stands. Additional limiting factors to ER were implicated.

Original languageEnglish (US)
Pages (from-to)216-230
Number of pages15
JournalAgricultural and Forest Meteorology
Volume148
Issue number2
DOIs
StatePublished - Feb 13 2008

Fingerprint

Great Lakes region
ecosystem respiration
forest ecosystems
forest ecosystem
respiration
moisture
ecosystem
lake
soil water
soil moisture
temperature
comparison
eddy covariance
hardwood forests
activation energy
hardwood
water supply
coniferous forest
coniferous forests
soil temperature

All Science Journal Classification (ASJC) codes

  • Forestry
  • Global and Planetary Change
  • Agronomy and Crop Science
  • Atmospheric Science

Cite this

Noormets, A. ; Desai, A. R. ; Cook, B. D. ; Euskirchen, E. S. ; Ricciuto, D. M. ; Davis, K. J. ; Bolstad, P. V. ; Schmid, H. P. ; Vogel, C. V. ; Carey, E. V. ; Su, H. B. ; Chen, J. / Moisture sensitivity of ecosystem respiration : Comparison of 14 forest ecosystems in the Upper Great Lakes Region, USA. In: Agricultural and Forest Meteorology. 2008 ; Vol. 148, No. 2. pp. 216-230.
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abstract = "Ecosystem respiration (ER) was measured with the eddy covariance technique in 14 forest ecosystems in the Upper Great Lakes Region during the growing seasons of 2002 and 2003. The response of ER to soil temperature and moisture was analyzed using empirical models. On average, ER was higher in the intermediate and young than in the mature stands, and higher in hardwood than in conifer stands. The seasonal mean temperature-normalized respiration rate (R10) ranged from 1 to 3 μmol CO2 m-2 s-1 and seasonal mean activation energy (Ea) from 40 to 110 kJ mol-1. The variation in the residuals of temperature response function of ER was best explained by soil moisture content. ER showed higher temperature sensitivity (as indicated by lower Ea) in the young than in the mature stands of coniferous forests, but not in the hardwood forests. The inclusion of soil moisture as an explicit driver of R10 explained an additional 8{\%} (range 0-21{\%}) of variability in ER. Significant moisture sensitivity of ER was detected in only 5 out of 20 site-years and it was associated with bimodal soil moisture distribution. Moisture sensitivity could partially be predicted from statistical moments kurtosis and interquartile range. The data implied greater moisture sensitivity with increasing stand age, possibly due to faster depletion of soil water supplies from a greater evaporative surface in the older stands. Additional limiting factors to ER were implicated.",
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Noormets, A, Desai, AR, Cook, BD, Euskirchen, ES, Ricciuto, DM, Davis, KJ, Bolstad, PV, Schmid, HP, Vogel, CV, Carey, EV, Su, HB & Chen, J 2008, 'Moisture sensitivity of ecosystem respiration: Comparison of 14 forest ecosystems in the Upper Great Lakes Region, USA', Agricultural and Forest Meteorology, vol. 148, no. 2, pp. 216-230. https://doi.org/10.1016/j.agrformet.2007.08.002

Moisture sensitivity of ecosystem respiration : Comparison of 14 forest ecosystems in the Upper Great Lakes Region, USA. / Noormets, A.; Desai, A. R.; Cook, B. D.; Euskirchen, E. S.; Ricciuto, D. M.; Davis, K. J.; Bolstad, P. V.; Schmid, H. P.; Vogel, C. V.; Carey, E. V.; Su, H. B.; Chen, J.

In: Agricultural and Forest Meteorology, Vol. 148, No. 2, 13.02.2008, p. 216-230.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Moisture sensitivity of ecosystem respiration

T2 - Comparison of 14 forest ecosystems in the Upper Great Lakes Region, USA

AU - Noormets, A.

AU - Desai, A. R.

AU - Cook, B. D.

AU - Euskirchen, E. S.

AU - Ricciuto, D. M.

AU - Davis, K. J.

AU - Bolstad, P. V.

AU - Schmid, H. P.

AU - Vogel, C. V.

AU - Carey, E. V.

AU - Su, H. B.

AU - Chen, J.

PY - 2008/2/13

Y1 - 2008/2/13

N2 - Ecosystem respiration (ER) was measured with the eddy covariance technique in 14 forest ecosystems in the Upper Great Lakes Region during the growing seasons of 2002 and 2003. The response of ER to soil temperature and moisture was analyzed using empirical models. On average, ER was higher in the intermediate and young than in the mature stands, and higher in hardwood than in conifer stands. The seasonal mean temperature-normalized respiration rate (R10) ranged from 1 to 3 μmol CO2 m-2 s-1 and seasonal mean activation energy (Ea) from 40 to 110 kJ mol-1. The variation in the residuals of temperature response function of ER was best explained by soil moisture content. ER showed higher temperature sensitivity (as indicated by lower Ea) in the young than in the mature stands of coniferous forests, but not in the hardwood forests. The inclusion of soil moisture as an explicit driver of R10 explained an additional 8% (range 0-21%) of variability in ER. Significant moisture sensitivity of ER was detected in only 5 out of 20 site-years and it was associated with bimodal soil moisture distribution. Moisture sensitivity could partially be predicted from statistical moments kurtosis and interquartile range. The data implied greater moisture sensitivity with increasing stand age, possibly due to faster depletion of soil water supplies from a greater evaporative surface in the older stands. Additional limiting factors to ER were implicated.

AB - Ecosystem respiration (ER) was measured with the eddy covariance technique in 14 forest ecosystems in the Upper Great Lakes Region during the growing seasons of 2002 and 2003. The response of ER to soil temperature and moisture was analyzed using empirical models. On average, ER was higher in the intermediate and young than in the mature stands, and higher in hardwood than in conifer stands. The seasonal mean temperature-normalized respiration rate (R10) ranged from 1 to 3 μmol CO2 m-2 s-1 and seasonal mean activation energy (Ea) from 40 to 110 kJ mol-1. The variation in the residuals of temperature response function of ER was best explained by soil moisture content. ER showed higher temperature sensitivity (as indicated by lower Ea) in the young than in the mature stands of coniferous forests, but not in the hardwood forests. The inclusion of soil moisture as an explicit driver of R10 explained an additional 8% (range 0-21%) of variability in ER. Significant moisture sensitivity of ER was detected in only 5 out of 20 site-years and it was associated with bimodal soil moisture distribution. Moisture sensitivity could partially be predicted from statistical moments kurtosis and interquartile range. The data implied greater moisture sensitivity with increasing stand age, possibly due to faster depletion of soil water supplies from a greater evaporative surface in the older stands. Additional limiting factors to ER were implicated.

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