Pine Maximum Latewood Density in Semi‐Arid Northern China Records Hydroclimate Rather Than Temperature

Yang, Bao; He, Mingzhu; Yang, Le; Wang, Feng; Ljungqvist, Fredrik Charpentier

doi:10.1029/2023gl104362

Cited by 5 publications

(1 citation statement)

References 53 publications

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“…Björklund et al [8] compared the common variability and climate sensitivity of MXD chronologies for Scots pine (Pinus sylvestris L.) at five sites in the Scandinavian Mountains and determined that the MXD values showed the strongest and most stable response to the temperature from April to August. In addition to temperature, precipitation [9], the self-calibrated Palmer Drought Severity Index (scPDSI) [10], proxies of water availability [11], and other factors influence the MXD chronology in some areas. However, substantially fewer studies have evaluated the effects of such factors than the sensitivity of MXD to summer temperature.…”

Section: Introductionmentioning

confidence: 99%

Regional Characteristics of the Climatic Response of Tree-Ring Maximum Density in the Northern Hemisphere

Yu,

Fan,

Zhang

et al. 2023

Forests

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The maximum latewood density (MXD) of tree rings can reflect the temperature of the growing season, but the timing of the response differs among regions. We selected 152 maximum latewood density chronologies from the Northern Hemisphere that showed a significant response to temperature. Based on a cluster analysis and the sensitivity of MXD to the monthly mean temperature, the chronologies were classified into six clusters. The clusters showed distinct regional characteristics, and the period and peak month of significant response of the chronologies in each cluster to temperature were different. Spatial synchronization of the MXDs revealed that the two clusters distributed in Europe showed the most consistency and the strongest response to the April–September monthly mean temperature compared with the other clusters. Temperature accounted for more than 40% of the total MXD variance in all clusters, whereas the effect of precipitation was much smaller. In addition to climatic factors, the random effect of the latitude and longitude of sampling sites, elevation, and tree species was a major factor contributing to the variance in MXD in each cluster. Latitude and longitude had the strongest influence among the three random effects, and tree species had the weakest influence, except at high latitudes. The MXD of each cluster showed sensitivity to temperature within a certain interval, with a positive linear response, and the sensitivity interval was greatest at high latitudes. Certain clusters showed a negative linear sensitivity to precipitation. The results provide a reference for studying the climatic threshold of large-scale tree-ring density formation.

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Section: Introductionmentioning

confidence: 99%

Regional Characteristics of the Climatic Response of Tree-Ring Maximum Density in the Northern Hemisphere

Yu,

Fan,

Zhang

et al. 2023

Forests

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The influence of proxy selection on global annual mean temperature reconstructions during the Common Era

Yang,

Li,

et al. 2024

Sci. China Earth Sci.

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Climatic implications in earlywood and latewood width indices of Chinese pine in north central China

Yang,

Zhang,

Fan

et al. 2024

J. For. Res.

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Latewood width (LWW) indices of trees are considered a reliable proxy of summer precipitation in the Northern Hemisphere. However, the strong coupling and high correlation between earlywood width (EWW) and LWW indices often prevent registration of climate signals of the LWW index. In this study, 328-year-long earlywood width and latewood width chronologies were developed from Chinese pine at two sites in the Hasi Mountains, north central China. The climate responses of these chronologies were analyzed and the LWW index used to derive summer precipitation signals. Correlation analyses showed that LWW was particularly influenced by earlywood growth and recorded stronger climate signals of the previous year as EWW, rather than those of the current year with infrequent summer climate signals. However, after removing the effect of earlywood growth using a simple regression model, the adjusted LWW chronology (LWWadj) showed a strong relationship with July precipitation in dry years. This suggests that the LWWadj chronology has the potential to be used to investigate long-term variability in summer precipitation in drought-limited regions.

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Pine Maximum Latewood Density in Semi‐Arid Northern China Records Hydroclimate Rather Than Temperature

Abstract: Tree-ring density parameters, especially maximum latewood density (MXD), have been widely used as a paleoclimate proxy for temperatures since the early 1990s (

Cited by 5 publications

References 53 publications

Regional Characteristics of the Climatic Response of Tree-Ring Maximum Density in the Northern Hemisphere

Regional Characteristics of the Climatic Response of Tree-Ring Maximum Density in the Northern Hemisphere

The influence of proxy selection on global annual mean temperature reconstructions during the Common Era

Climatic implications in earlywood and latewood width indices of Chinese pine in north central China

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