Oxygen isotope ratios of subalpine conifers in Jirisan National Park, Korea and their dendroclimatic potential

Jeong Wook Seo, Masaki Sano, Hyun Min Jeong, Kwang Hee Lee, Hong Chul Park, Takeshi Nakatsuka, Chang Seob Shin

Research output: Contribution to journalArticle

Abstract

The present study aimed to explore the dendroclimatic potential of three conifer species, viz. Taxus cuspidata, Abies koreana, and Pinus koraiensis, in the subalpine zone in the Republic of Korea. The tree-ring δ18O chronologies were analyzed for the last 50 years and were found to be well correlated with one another (r = 0.70 – 0.87). In the correlation analyses with temperature in the growing season, the tree-ring δ18O data of Abies / Taxus / Pinus showed positive correlation coefficients significantly with April, June, and July / April and July / April. On the other hand, in the correlation analyses with precipitation, only the tree-ring δ18O data of Abies and Taxus showed negative correlation coefficients significantly with April and May, respectively. For the correlation analyses with relative humidity, only the tree-ring δ18O data of Abies and Taxus showed significant negative correlation coefficients with April, June, and July for Abies, and with June and July for Taxus. Based on the results, we developed an extended Taxus δ18O chronology back till 1864 CE (152 years). Spatial correlation analyses revealed that the Taxus δ18O was mainly influenced by precipitation in the upstream regions of western Japan rather than that in the study region. This result pointed out the importance of the upstream hydrological processes that govern δ18O in precipitation. In addition, the TC δ18O showed meaningful correlations with temperature over Korea including our study region. These results indicated that the tree-ring δ18O of southern Korea was controlled not only by local temperature, but also by the upstream moisture conditions of western Japan.

Original languageEnglish
Article number125626
JournalDendrochronologia
Volume57
DOIs
Publication statusPublished - 2019 Oct 1

Fingerprint

oxygen isotope ratio
Taxus
conifers
coniferous tree
Korean Peninsula
isotopes
national parks
national park
oxygen
growth rings
tree ring
Abies
chronology
Abies koreana
Taxus cuspidata
Japan
Pinus koraiensis
temperature
South Korea
relative humidity

Keywords

  • Conifer trees
  • Moisture condition
  • Oxygen isotope
  • Subalpine zone

ASJC Scopus subject areas

  • Ecology
  • Plant Science

Cite this

Oxygen isotope ratios of subalpine conifers in Jirisan National Park, Korea and their dendroclimatic potential. / Seo, Jeong Wook; Sano, Masaki; Jeong, Hyun Min; Lee, Kwang Hee; Park, Hong Chul; Nakatsuka, Takeshi; Shin, Chang Seob.

In: Dendrochronologia, Vol. 57, 125626, 01.10.2019.

Research output: Contribution to journalArticle

Seo, Jeong Wook ; Sano, Masaki ; Jeong, Hyun Min ; Lee, Kwang Hee ; Park, Hong Chul ; Nakatsuka, Takeshi ; Shin, Chang Seob. / Oxygen isotope ratios of subalpine conifers in Jirisan National Park, Korea and their dendroclimatic potential. In: Dendrochronologia. 2019 ; Vol. 57.
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AB - The present study aimed to explore the dendroclimatic potential of three conifer species, viz. Taxus cuspidata, Abies koreana, and Pinus koraiensis, in the subalpine zone in the Republic of Korea. The tree-ring δ18O chronologies were analyzed for the last 50 years and were found to be well correlated with one another (r = 0.70 – 0.87). In the correlation analyses with temperature in the growing season, the tree-ring δ18O data of Abies / Taxus / Pinus showed positive correlation coefficients significantly with April, June, and July / April and July / April. On the other hand, in the correlation analyses with precipitation, only the tree-ring δ18O data of Abies and Taxus showed negative correlation coefficients significantly with April and May, respectively. For the correlation analyses with relative humidity, only the tree-ring δ18O data of Abies and Taxus showed significant negative correlation coefficients with April, June, and July for Abies, and with June and July for Taxus. Based on the results, we developed an extended Taxus δ18O chronology back till 1864 CE (152 years). Spatial correlation analyses revealed that the Taxus δ18O was mainly influenced by precipitation in the upstream regions of western Japan rather than that in the study region. This result pointed out the importance of the upstream hydrological processes that govern δ18O in precipitation. In addition, the TC δ18O showed meaningful correlations with temperature over Korea including our study region. These results indicated that the tree-ring δ18O of southern Korea was controlled not only by local temperature, but also by the upstream moisture conditions of western Japan.

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