Abstract
Tree-ring samples from Chinese Pine (Pinus tabulaeformis Carr.) collected at Mt. Shimen on the western Loess Plateau, China, were used to reconstruct the mean May–July temperature during AD 1630–2011. The regression model explained 48% of the adjusted variance in the instrumentally observed mean May–July temperature. The reconstruction revealed significant temperature variations at interannual to decadal scales. Cool periods observed in the reconstruction coincided with reduced solar activities. The reconstructed temperature matched well with two other tree-ring based temperature reconstructions conducted on the northern slope of the Qinling Mountains (on the southern margin of the Loess Plateau of China) for both annual and decadal scales. In addition, this study agreed well with several series derived from different proxies. This reconstruction improves upon the sparse network of high-resolution paleoclimatic records for the western Loess Plateau, China.
Highlights
The impacts of global warming on different regions especially on environmental fragile regions have received much attention [1,2,3]
Other studies showed that tree rings are significantly correlated with Palmer Drought Severity Index (PDSI) [8,9,25], whereas trees rings on MSM showed a weak correlation with PDSI (Fig. 4b), which is different from other study results
The same response was observed in Nanwutai [11] and the Funiu Mountains [26], which are located on the northern slope of the Qinling Mountains (QLM)
Summary
The impacts of global warming on different regions especially on environmental fragile regions have received much attention [1,2,3]. There is a need to understand the mechanisms of climate change on the Loess Plateau. For this purpose, recent climate change must be studied in the context of the past one hundred to one thousand years. Instrumental weather records only provide limited data for approximately the last 60 years in China and are inadequate for examining the lowfrequency variability that may underlie short-term climatic trends [6]. Tree-ring records are an important resource for understanding past climate change and can provide useful climate information for several centuries or even millennia beyond the instrumental record. Temperature reconstructions remain limited for the western Loess Plateau
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