Millennial temperature variations derived from tree-ring width chronologies at the upper treeline of the Qilian Mountains, the Tibetan Plateau

2012 ◽  
Vol 279-280 ◽  
pp. 559 ◽  
Author(s):  
Yong Zhang
Keyword(s):  
Tibetan Plateau ◽  
Tree Ring ◽  
Ring Width ◽  
Qilian Mountains ◽  
The Tibetan Plateau ◽  
Tree Ring Width ◽  
Temperature Variations ◽  
The Qilian Mountains

Spatial variability of tree growth along a latitudinal transect in the Qilian Mountains, northeastern Tibetan Plateau

2010 ◽  
Vol 40 (2) ◽  
pp. 200-211 ◽  
Author(s):  
Eryuan Liang ◽  
Xuemei Shao ◽  
Dieter Eckstein ◽  
Xiaohong Liu
Keyword(s):  
Tibetan Plateau ◽  
Spatial Variability ◽  
Tree Growth ◽  
Principal Components ◽  
Ring Width ◽  
Qilian Mountains ◽  
The Tibetan Plateau ◽  
Northeastern Tibetan Plateau ◽  
Latitudinal Transect ◽  
The Qilian Mountains

Little is known about the spatial variability in tree growth and its responses to climate on the Tibetan Plateau; however, such information is essential for improving predictions of forest ecosystem response to climatic change. A network of 16 ring width chronologies was developed along a latitudinal transect in the Qilian Mountains, northeastern Tibetan Plateau. A principal components analysis revealed that the residual chronologies had a positive loading on the first unrotated principal component (PC1). After rotation, PC1 yielded the highest loadings on the driest sites in the northwest and decreased to the south and to the east. PC2 was negatively correlated with altitude. Moisture availability was a dominant limiting factor for tree growth, and this dominance increased northwards and westwards along the precipitation gradient. Loadings of the first two rotated principal components separated the 16 forest sites into three major groups corresponding to the three regions affected by the East Asian Monsoon, Westerlies, and their interaction. Thus, spatial variability in tree growth is an excellent bioindicator of regional climate.

Climatic implications of a 3585-year tree-ring width chronology from the northeastern Qinghai-Tibetan Plateau

2010 ◽  
Vol 29 (17-18) ◽  
pp. 2111-2122 ◽  
Author(s):  
X. Shao ◽  
Y. Xu ◽  
Z.-Y. Yin ◽  
E. Liang ◽  
H. Zhu ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Tree Ring ◽  
Ring Width ◽  
Tree Ring Width

A 3585-YEAR RING-WIDTH DATING CHRONOLOGY OF QILIAN JUNIPER FROM THE NORTHEASTERN QINGHAI-TIBETAN PLATEAU

IAWA Journal ◽  
2009 ◽  
Vol 30 (4) ◽  
pp. 379-394 ◽  
Author(s):  
Xuemei Shao ◽  
Shuzhi Wang ◽  
Haifeng Zhu ◽  
Yan Xu ◽  
Eryuan Liang ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Tree Ring ◽  
Tree Species ◽  
Qaidam Basin ◽  
Ring Width ◽  
Northwestern China ◽  
Tree Ring Width ◽  
Living Tree ◽  
Qilian Juniper

This article documents the development of a precisely dated and wellreplicated long regional tree-ring width dating chronology for Qilian juniper (Juniperus przewalskii Kom.) from the northeastern Qinghai- Tibetan Plateau. It involves specimens from 22 archeological sites, 24 living tree sites, and 5 standing snags sites in the eastern and northeastern Qaidam Basin, northwestern China. The specimens were cross-dated successfully among different groups of samples and among different sites. Based on a total of 1438 series from 713 trees, the chronology covers 3585 years and is the longest chronology by far in China. Comparisons with chronologies of the same tree species about 200 km apart suggest that this chronology can serve for dating purposes in a region larger than the study area. This study demonstrates the great potential of Qilian juniper for dendrochronological research.

scholarly journals Sub-recent Ostracoda from Qilian Mountains, NW China

2003 ◽  
Vol 22 (2) ◽  
pp. 137-138 ◽  
Author(s):  
Steffen Mischke ◽  
Ulrike Herzschuh ◽  
Harald Kürschner ◽  
Fahu Chen ◽  
Fei Meng ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Sea Level ◽  
Qilian Mountains ◽  
The Tibetan Plateau ◽  
Nw China ◽  
Mountainous Regions ◽  
History Of ◽  
Climatic History ◽  
The Qilian Mountains ◽  
First Time

Abstract. To our knowledge, the Qilian Mountains in NW China have been investigated with respect to Recent or sub-Recent ostracods for the first time. The Qilian Mountains (95–103°E/37–40°N) extend along the northeastern margin of the Tibetan Plateau reaching a maximum altitude of 5826 m above sea-level (m asl).In September 2001, surface mud from the bottom of various water bodies including brooks, rivers and small shallow meadow and oxbow pools were sampled at an altitude ranging from 2900 m to 3570 m asl. In addition, surface mud samples and short cores were obtained from the small (c. 1 km2) and shallow (<0.4 m) freshwater Lake Luanhaizi situated at about 3200 m asl.Ostracod valves were usually abundant in all of the 32 samples and comprised the taxa listed in Table 1, some of which are illustrated in Plate 1.The recorded taxa are mainly distributed in the holarctic realm but Fabaeformiscandona danielopoli and Ilyocypris echinata appear to be restricted to the cold mountainous regions in China (Huang, 1985; Wang &amp; Zhu, 1991; Sun et al., 1995; Yin &amp; Martens, 1997).Following the first survey, a 14 m long core was drilled in Lake Luanhaizi in January 2002 which is currently under multidisciplinary investigation to reconstruct the Holocene vegetation and climatic history of the Qilian Mountains.

scholarly journals Tree-ring derived millennial precipitation record for the south-central Tibetan Plateau and its possible driving mechanism

The Holocene ◽  
2012 ◽  
Vol 23 (1) ◽  
pp. 36-45 ◽  
Author(s):  
Minhui He ◽  
Bao Yang ◽  
Achim Bräuning ◽  
Jianglin Wang ◽  
Zhangyong Wang
Keyword(s):  
Tibetan Plateau ◽  
Tree Ring ◽  
Rainfall Variability ◽  
Ring Width ◽  
Driving Mechanism ◽  
Tree Ring Width ◽  
The South ◽  
South Central ◽  
Central Tibetan Plateau ◽  
Precipitation Record

Knowledge of Asian monsoon variability remains limited because of sparse instrumental data available only for short time series. Here, an updated tree-ring width record covering the period ad 1037–2009 was developed for the south-central Tibetan Plateau (TP). Correlation analysis revealed a significant relationship ( r = 0.71) between the tree-ring index and annual (previous July to current June) precipitation series for the instrumental period 1963–2008, which accounts for 50.41% of the rainfall variability. Based on a linear regression model, the longest available regional precipitation history was reconstructed. Spatial correlation between tree ring width and annual precipitation data from previous July to current June indicates that the reconstruction is representative of precipitation changes on the south-central TP. Regional wet conditions occurred during ad 1095–1161, 1376–1403, 1414–1446, 1518–1537, 1549–1572, 1702–1757, 1848–1878 and 1891–1913, while dry periods were identified during ad1189–1242, 1256–1314, 1329–1357, 1470–1491, 1573–1623, 1636–1686, 1761–1821, 1823–1847, 1879–1890 and 1931–1985. The negative correlation between our reconstructed precipitation and India monsoon rainfall series indicates the seesaw pattern over northern and southern monsoon Asia. It is suggested that solar radiation-induced sea surface temperature (SST) anomalies over the tropical Pacific influence regional rainfall patterns. The degree of this influence has been stable at the multidecadal scale during the past 1000 years.

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