Inter- and intra-annual tree-ring cellulose oxygen isotope variability in response to precipitation in Southeast China

Chenxi Xu, Huaizhou Zheng, Takeshi Nakatsuka, Masaki Sano, Zhen Li, Junyi Ge

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Key message: Compared with annual tree-ring cellulose δ18O, intra-annual cellulose δ18O has potential to reconstruct precipitation with higher resolution and stronger signal intensity. Abstract: Annual tree-ring cellulose oxygen isotope values (δ18O) of Fokienia hodginsii provide a promising proxy of monsoon-season precipitation in Southeast China. Measuring intra-annual cellulose δ18O values may reveal the seasonal variability of precipitation and the associated climate influences. Here, we examine intra-annual variation of cellulose δ18O values in Fokienia hodginsii and Cryptomeria fortune from Fujian Province, Southeast China. Both species exhibited considerable intra-annual variations in cellulose δ18O (range ~6 ‰) with a consistent pattern of enriched values near the annual ring boundary and depleted values in the central portion of the ring. Seasonal patterns in the tree-ring δ18O values generally followed changes in precipitation δ18O values. Compared with annual tree-ring cellulose δ18O, intra-annual cellulose δ18O has potential to reconstruct precipitation with higher resolution and stronger signal intensity. July tree-ring cellulose δ18O is significantly correlated (r = −0.58, p < 0.05) with July precipitation, and June–August tree-ring cellulose δ18O and annual tree-ring cellulose δ18O, respectively, explain 52 and 41 % of the actual variance of April–August precipitation. In addition, May–October cellulose δ18O values during El Niño years are higher than in La Niña years, and April to October rainfall is lower in El Niño years than in La Niña years. Combining the significant correlations between inter-annual cellulose δ18O values and sea surface temperatures in the central tropical Pacific, our results support the hypothesis that El Niño–Southern Oscillation affects tree-ring cellulose δ18O in Southeast China by modulating seasonal precipitation.

Original languageEnglish
Pages (from-to)785-794
Number of pages10
JournalTrees - Structure and Function
Volume30
Issue number3
DOIs
Publication statusPublished - 2016 Jun 1
Externally publishedYes

Fingerprint

Oxygen Isotopes
growth rings
tree ring
Cellulose
oxygen isotope
cellulose
China
isotopes
oxygen
Fokienia
annual variation
seasonal variation
Cryptomeria
monsoon season

Keywords

  • Cryptomeria fortune
  • El Niño–Southern Oscillation
  • Fokienia hodginsii
  • Precipitation
  • Tree-ring cellulose oxygen isotope

ASJC Scopus subject areas

  • Forestry
  • Physiology
  • Ecology
  • Plant Science

Cite this

Inter- and intra-annual tree-ring cellulose oxygen isotope variability in response to precipitation in Southeast China. / Xu, Chenxi; Zheng, Huaizhou; Nakatsuka, Takeshi; Sano, Masaki; Li, Zhen; Ge, Junyi.

In: Trees - Structure and Function, Vol. 30, No. 3, 01.06.2016, p. 785-794.

Research output: Contribution to journalArticle

Xu, Chenxi ; Zheng, Huaizhou ; Nakatsuka, Takeshi ; Sano, Masaki ; Li, Zhen ; Ge, Junyi. / Inter- and intra-annual tree-ring cellulose oxygen isotope variability in response to precipitation in Southeast China. In: Trees - Structure and Function. 2016 ; Vol. 30, No. 3. pp. 785-794.
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AU - Xu, Chenxi

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AU - Li, Zhen

AU - Ge, Junyi

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AB - Key message: Compared with annual tree-ring cellulose δ18O, intra-annual cellulose δ18O has potential to reconstruct precipitation with higher resolution and stronger signal intensity. Abstract: Annual tree-ring cellulose oxygen isotope values (δ18O) of Fokienia hodginsii provide a promising proxy of monsoon-season precipitation in Southeast China. Measuring intra-annual cellulose δ18O values may reveal the seasonal variability of precipitation and the associated climate influences. Here, we examine intra-annual variation of cellulose δ18O values in Fokienia hodginsii and Cryptomeria fortune from Fujian Province, Southeast China. Both species exhibited considerable intra-annual variations in cellulose δ18O (range ~6 ‰) with a consistent pattern of enriched values near the annual ring boundary and depleted values in the central portion of the ring. Seasonal patterns in the tree-ring δ18O values generally followed changes in precipitation δ18O values. Compared with annual tree-ring cellulose δ18O, intra-annual cellulose δ18O has potential to reconstruct precipitation with higher resolution and stronger signal intensity. July tree-ring cellulose δ18O is significantly correlated (r = −0.58, p < 0.05) with July precipitation, and June–August tree-ring cellulose δ18O and annual tree-ring cellulose δ18O, respectively, explain 52 and 41 % of the actual variance of April–August precipitation. In addition, May–October cellulose δ18O values during El Niño years are higher than in La Niña years, and April to October rainfall is lower in El Niño years than in La Niña years. Combining the significant correlations between inter-annual cellulose δ18O values and sea surface temperatures in the central tropical Pacific, our results support the hypothesis that El Niño–Southern Oscillation affects tree-ring cellulose δ18O in Southeast China by modulating seasonal precipitation.

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