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Tree-ring cellulose...
Tree-ring cellulose oxygen isotopes indicate atmospheric aridity in the western Kunlun Mountains
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Feng, X. Y. (author)
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Huang, R. (author)
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Zhu, H. F. (author)
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Liang, E. Y. (author)
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Brauning, A. (author)
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Zhong, L. H. (author)
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Gong, Z. H. (author)
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- Zhang, Peng (author)
- Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences
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Asad, F. (author)
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Zhu, X. L. (author)
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Griessinger, J. (author)
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(creator_code:org_t)
- Elsevier BV, 2022
- 2022
- English.
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In: Ecological Indicators. - : Elsevier BV. - 1470-160X. ; 137
- Related links:
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https://gup.ub.gu.se...
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https://doi.org/10.1...
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Abstract
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- As an important indicator of atmospheric aridity, the vapor pressure deficit (VPD) is being paid increasing attention in global change researches during recent decades. However, available proxy data with the capability to represent VPD is still scarce in the globe. Herein we demonstrated a "hidden " frequency-dependent indication of tree-ring cellulose oxygen isotope (delta(OTRC)-O-18) to atmospheric aridity in the western Kunlun Mountains, Central Asia. In applying correlation and partial correlation analysis, frequency-dependent climatic drivers triggering the delta(OTRC)-O-18 values were detected. For the raw data with inter-decadal variability, delta(OTRC)-O-18 variations mainly indicated May-August precipitation (Local: r = -0.59, p < 0.001; Moisture source: r = -0.53, p < 0.001), evapotranspiration (ET) (Local: r = -0.57, p < 0.001; Moisture source: r = -0.51, p < 0.001). After a 5-year high-pass filter, the delta(OTRC)-O-18 series revealed highly significant correlation with May-August VPD (Local: r = 0.82, p < 0.001; Moisture source: r = 0.80, p < 0.001). The partial correlation further confirmed the strong linkages with high-frequency VPD when the impact of any additional eco-climatological variable (precipitation, temperature, ET, soil moisture 0-40 cm) was excluded. In contrast, if the effect of May-August VPD was excluded, relationships between delta(OTRC)-O-18 and other variables turned insignificant. Collectively, it was concluded that delta 18OTRC from the western Kunlun Mountains may indicate VPD at timescales < 5 years. Our results suggest that frequency dependent climatic significances should be considered when interpreting multi-process determined delta(OTRC)-O-18 as a climate-proxy.
Subject headings
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Meteorologi och atmosfärforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Meteorology and Atmospheric Sciences (hsv//eng)
Keyword
- Atmospheric aridity
- Tree-ring cellulose delta O- 18
- Vapor
- pressure deficit
- Frequency-dependency
- Western Kunlun Mountains
- southeastern tibetan plateau
- stable-isotopes
- precipitation
- delta-o-18
- climate
- carbon
- reconstruction
- temperature
- proxies
- ratios
- Biodiversity & Conservation
- Environmental Sciences & Ecology
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Feng, X. Y.
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Huang, R.
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Zhu, H. F.
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Liang, E. Y.
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Brauning, A.
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Zhong, L. H.
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show more...
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Gong, Z. H.
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Zhang, Peng
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Asad, F.
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Zhu, X. L.
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Griessinger, J.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Ecology
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Meteorology and ...
- Articles in the publication
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Ecological Indic ...
- By the university
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University of Gothenburg