气候变化领域集成服务门户(CCPortal): Tree-ring cellulose oxygen isotopes indicate atmospheric aridity in the western Kunlun Mountains

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DOI	10.1016/j.ecolind.2022.108776
	Tree-ring cellulose oxygen isotopes indicate atmospheric aridity in the western Kunlun Mountains
	Feng, Xiaoyu; Huang, Ru; Zhu, Haifeng; Liang, Eryuan; Braeuning, Achim; Zhong, Linhao; Gong, Zhaohui; Zhang, Peng; Asad, Fayaz; Zhu, Xiaolong; Griessinger, Jussi
通讯作者	Huang, R (通讯作者)
发表日期	2022
ISSN	1470-160X
EISSN	1872-7034
卷号	137
英文摘要	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.
关键词	SOUTHEASTERN TIBETAN PLATEAU STABLE-ISOTOPES PRECIPITATION DELTA-O-18 CLIMATE CARBON RECONSTRUCTION TEMPERATURE PROXIES RATIOS
英文关键词	Atmospheric aridity; Tree-ring cellulose delta O- 18 ; Vapor pressure deficit; Frequency-dependency; Western Kunlun Mountains
语种	英语
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS类目	Biodiversity Conservation ; Environmental Sciences
WOS记录号	WOS:000792763600001
来源期刊	ECOLOGICAL INDICATORS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260720
推荐引用方式 GB/T 7714	Feng, Xiaoyu,Huang, Ru,Zhu, Haifeng,et al. Tree-ring cellulose oxygen isotopes indicate atmospheric aridity in the western Kunlun Mountains[J]. 中国科学院青藏高原研究所,2022,137.
APA	Feng, Xiaoyu.,Huang, Ru.,Zhu, Haifeng.,Liang, Eryuan.,Braeuning, Achim.,...&Griessinger, Jussi.(2022).Tree-ring cellulose oxygen isotopes indicate atmospheric aridity in the western Kunlun Mountains.ECOLOGICAL INDICATORS,137.
MLA	Feng, Xiaoyu,et al."Tree-ring cellulose oxygen isotopes indicate atmospheric aridity in the western Kunlun Mountains".ECOLOGICAL INDICATORS 137(2022).