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Development of a Larix principis-rupprechtii tree-ring width chronology and its climatic signals for the southern Greater Higgnan Mountains

Tongwen Zhang
Tongwen Zhang
, 
Shulong Yu
Shulong Yu
, 
Yujiang Yuan
Yujiang Yuan
, 
Liping Huang
Liping Huang
 und 
Shengxia Jiang
Shengxia Jiang
   | 24. Jan. 2018
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Article Category: Regular Articles
Online veröffentlicht: 24. Jan. 2018
Seitenbereich: 1 - 9
Eingereicht: 25. Mai 2017
Akzeptiert: 02. Nov. 2017
DOI: https://doi.org/10.1515/geochr-2015-0082
Schlüsselwörter
© 2018 T. Zhang., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Fig. 1

Location of tree-ring sites sampled in this study and selected from previous studies (Wang et al., 2005; Liang et al., 2007a; Liu et al., 2009a; Zhang et al., 2009; Zhang et al., 2010; Bao et al., 2012; Sun et al., 2012b; Zhang et al., 2013; Zhang et al., 2014a) and meteorological stations in Greater Higgnan Mountains (a); a display of sampling environment in the study area (b).
Location of tree-ring sites sampled in this study and selected from previous studies (Wang et al., 2005; Liang et al., 2007a; Liu et al., 2009a; Zhang et al., 2009; Zhang et al., 2010; Bao et al., 2012; Sun et al., 2012b; Zhang et al., 2013; Zhang et al., 2014a) and meteorological stations in Greater Higgnan Mountains (a); a display of sampling environment in the study area (b).

Fig. 2

Climatic diagram for Balinzuoqi (a, b, c), Xiwuzhumuqinqi (d, e, f) and Linxi (g, h, i) meteorological stations near sampling sites in southern Greater Higgnan Mountains, and average meteorological data from the three stations (j, k, l). Bars indicate monthly precipitation (mm), and curves with points represent monthly mean temperature (°C). Solid lines indicate annual total precipitation and mean temperature. Dashed lines represent trends of annual climatic data.
Climatic diagram for Balinzuoqi (a, b, c), Xiwuzhumuqinqi (d, e, f) and Linxi (g, h, i) meteorological stations near sampling sites in southern Greater Higgnan Mountains, and average meteorological data from the three stations (j, k, l). Bars indicate monthly precipitation (mm), and curves with points represent monthly mean temperature (°C). Solid lines indicate annual total precipitation and mean temperature. Dashed lines represent trends of annual climatic data.

Fig. 3

Monthly (a) and annual (b) mean PDSI for southern Greater Higgnan Mountains. Dashed lines represent trends of annual mean PDSI.
Monthly (a) and annual (b) mean PDSI for southern Greater Higgnan Mountains. Dashed lines represent trends of annual mean PDSI.

Fig. 4

Two tree-ring-width chronologies (thin lines) from single sample site, and regional chronology and EPS data (thick lines). Dashed lines represent EPS = 0.85.
Two tree-ring-width chronologies (thin lines) from single sample site, and regional chronology and EPS data (thick lines). Dashed lines represent EPS = 0.85.

Fig. 5

Pearson correlations (bars) among SGH chronology and average meteorological data from three stations (a. precipitation; b. mean temperature), and (c) gridded 118.25°–44.25° PDSI. Lowercase letters represent months of previous year, and uppercase letters are months of current year. P7-5 indicates precipitation from previous July to current May; T4–7 indicates temperature from April to July. Dotted lines indicate 0.05 significance levels.
Pearson correlations (bars) among SGH chronology and average meteorological data from three stations (a. precipitation; b. mean temperature), and (c) gridded 118.25°–44.25° PDSI. Lowercase letters represent months of previous year, and uppercase letters are months of current year. P7-5 indicates precipitation from previous July to current May; T4–7 indicates temperature from April to July. Dotted lines indicate 0.05 significance levels.

Fig. 6

Spatial correlation of the regional chronology for southern Greater Higgnan Mountains from 0.5° CRU self-calibrating PDSI 3.21 dataset over the period 1955–2012.
Spatial correlation of the regional chronology for southern Greater Higgnan Mountains from 0.5° CRU self-calibrating PDSI 3.21 dataset over the period 1955–2012.

Fig. 7

Graphical comparison of SGH chronology (blue line) and PDSI reconstruction for Ortindag Sand Land (red line) from 13-year reciprocal filters in (a) original, (b) high-, and (c) low-frequency domains.
Graphical comparison of SGH chronology (blue line) and PDSI reconstruction for Ortindag Sand Land (red line) from 13-year reciprocal filters in (a) original, (b) high-, and (c) low-frequency domains.

Information on sampling sites.

Site codeLatitude (N)Longitude (E)Number of trees/coresElevation (m)AspectSlopeMaximum tree-ageThe rate of absent rings (%)
BYH44.44°118.85°21/42~1530NW30°224 (1791–2014)0.24
QMG44.20°118.77°20/40~1310NW25°102 (1913–2014)0.36

Statistics of chronologies from two sampling sites (BYH and QMG) and regional chronology (SGH) over common period 1950–2010.

StatisticBYHQMGSGH
Standard deviation (SD)0.350.380.35
Mean sensitivity (MS)0.330.300.32
First-order autocorrelation (AC1)0.460.600.44
Interseries correlation (trees)0.400.470.33
Interseries correlation (all series)0.410.480.34
Mean within-tree correlation0.820.700.79
Signal-to-noise ratio (SNR)19.9517.8125.14
Expressed population signal (EPS)0.950.950.96
The first principal component (PC#1)0.440.520.37

Coherence among annual total precipitation and annual mean temperature from three meteorological stations over the common period 1955–2012. Correlation coefficients are listed. Results for the original and first differences filtered climatic data are shown.

Original (n = 59)/The first differences (n = 58)
Annual total precipitationAnnual mean temperature
BalinzuoqiXiwuzhumuqinqiLinxiBalinzuoqiXiwuzhumuqinqiLinxi
Balinzuoqi/0.599

Significant at p < 0.01.

/0.520

Significant at p < 0.01.

0.638

Significant at p < 0.01.

/0.610

Significant at p < 0.01.

///
Annual total precipitationXiwuzhumuqinqi//0.646

Significant at p < 0.01.

/0.637

Significant at p < 0.01.

///
Linxi//////
Balinzuoqi////0.904

Significant at p < 0.01.

/0.900

Significant at p < 0.01.

0.947

Significant at p < 0.01.

/0.947

Significant at p < 0.01.

Annual mean temperatureXiwuzhumuqinqi/////0.950

Significant at p < 0.01.

/0.935

Significant at p < 0.01.

Linxi//////

Coherence among chronologies from two sampling sites over common period 1950–2014. Correlation coefficients are listed. Results for the original, high- and low-pass filtered chronologies are shown.

OriginalHigh-frequencyLow-frequency
r0.5720.6810.501
p< 0.001< 0.001< 0.001
n655353
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