Open AccessComparison of Sungkai Tree-Ring Components and Meteorological Data from Western Java, Indonesia
Author(s) -
YumikoWatanabe,
Shigeki Tamura,
Takeshi Nakatsuka,
Suyako Tazuru,
Junji Sugiyama,
Bambang Subiyanto,
Toshitaka Tsuda,
Takahiro Tagami
Publication year - 2013
Publication title -
journal of disaster research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.332
H-Index - 18
eISSN - 1883-8030
pISSN - 1881-2473
DOI - 10.20965/jdr.2013.p0095
Subject(s) - precipitation , dendrochronology , relative humidity , wet season , dry season , environmental science , climatology , atmospheric sciences , geography , geology , meteorology , biology , ecology , archaeology
In order to explore the potential of tree-ring components as climate proxies in Asian tropical area, we performed a systematic comparison between temporal variations in meteorological data – precipitation, relative humidity and sunlight hours – and those in treering parameters – ring width, mean earlywood vessel area and δ 18 O– in a sungkai disk collected from western Java, Indonesia. Ring width shows a significant positive correlation with precipitation in the last dry season prior to growth period. Ring width is also correlated inversely with sunlight hours in the last dry season. Mean earlywood vessel area shows a significant, positive correlation with precipitation and relative humidity during the rainy season of growth period. The δ 18 O and δ 13 C time series of alpha-cellulose samples, which divide each ring into three parts – earlywood, inner latewood and outer latewood – vary, furthermore, from 22‰ to 28‰ and from -28‰ to -24‰, respectively. δ 13 C results show distinct annual cycles, for which values of earlywood are highest, gradually followed by a decrease. Although δ 18 O has no such seasonal pattern, annual-averaged δ 18 O records show an inverse correlation with precipitation and relative humidity in the rainy season of growth period. As described above, multi-components of sungkai tree rings are expected to be useful in paleoclimate reconstruction on a seasonal scale.