DOI: 10.5194/cp-13-185-2017
Scopus记录号: 2-s2.0-85015095753
论文题名: A chironomid-based mean July temperature inference model from the south-east margin of the Tibetan Plateau, China
作者: Zhang E. ; Chang J. ; Cao Y. ; Tang H. ; Langdon P. ; Shulmeister J. ; Wang R. ; Yang X. ; Shen J.
刊名: Climate of the Past
ISSN: 18149324
出版年: 2017
卷: 13, 期: 3 起始页码: 185
结束页码: 199
语种: 英语
Scopus关键词: Chironomidae
英文摘要: A chironomid-based calibration training set comprised of 100 lakes from south-western China was established. Multivariate ordination analyses were used to investigate the relationship between the distribution and abundance of chironomid species and 18 environmental variables from these lakes. Canonical correspondence analyses (CCAs) and partial CCAs showed that mean July temperature is one of the independent and significant variables explaining the second-largest amount of variance after potassium ions (K+) in 100 south-western Chinese lakes. Quantitative transfer functions were created using the chironomid assemblages for this calibration data set. The second component of the weighted-average partial least squares (WA-PLS) model produced a coefficient of determination (r2bootstrap) of 0.63, maximum bias (bootstrap) of 5.16 and root-mean-square error of prediction (RMSEP) of 2.31°C. We applied the transfer functions to a 150-year chironomid record from Tiancai Lake (26°38′3.8N, 99°43′E; 3898ma.s.l.), Yunnan, China, to obtain mean July temperature inferences. We validated these results by applying several reconstruction diagnostics and comparing them to a 50-year instrumental record from the nearest weather station (26°51′29.22′′N, 100°14′2.34′′E; 2390ma.s.l.). The transfer function performs well in this comparison. We argue that this 100-lake large training set is suitable for reconstruction work despite the low explanatory power of mean July temperature because it contains a complete range of modern temperature and environmental data for the chironomid taxa observed and is therefore robust. © 2017 The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/48939
Appears in Collections: 气候变化与战略
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Recommended Citation:
Zhang E.,Chang J.,Cao Y.,et al. A chironomid-based mean July temperature inference model from the south-east margin of the Tibetan Plateau, China[J]. Climate of the Past,2017-01-01,13(3)