Xue-mei Shao

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Midlatitude regions experienced frequent droughts during the twentieth century, but their impacts on terrestrial carbon balance are unclear. This paper presents a century-scale study of drought effects on the carbon balance of terrestrial ecosystems in China. The authors first characterized the severe extended droughts over the period 1901–2002 using the(More)
Meyer spruce (Picea meyeri Rehd. et Wils.) is a relict conifer, and Chinese leymus (Leymus chinensis [Trin.] Tzvel.) is a dominant grass in typical steppe of the Xilin River Basin, northern China. Herein, we evaluated the relationships between tree-ring width index of Meyer spruce, climate and above-ground biomass of Chinese leymus, and reconstructed(More)
[1] The stable carbon isotope composition (d 13 C) of tree rings in a climate-sensitive region can provide a retrospective view of changes in environment and climate. Here, we report on the development of the first annually resolved d 13 C tree ring chronology obtained from natural forests on the northeastern Tibetan Plateau. Climate data show a warming(More)
A tree-ring width chronology was developed using the tree-ring cores of Huangshan pine (Pinus taiwanensis Hayata) from the Dabie Mountains, central China. Descriptive statistics of the chronology indicated that Huangshan pine showed a common signal likely associated to climate. A correlation analysis was conducted between the chronology and climate(More)
Euphrates poplar (Populus euphratica) is a key species of Tugai forests in the central Asian deserts and has been the topic of dendrochronological studies in west China since the 1980s. However, little is known about its growth performance at its highest occurrence in the southern Qaidam Basin of the northern Tibetan Plateau. Increment cores of the(More)
Anatomical characteristics have been proven useful for extracting climatic signals. To examine the climatic signals recorded by tree-ring cell features in the Changbai Mountains, we measured cell number and cell lumen diameter, in addition to ring widths, of Korean pine (Pinus koraiensis) tree rings at sites of varied elevation, and we developed(More)
The net primary productivity (NPP) of Pinus koraiensis , estimated from tree-ring widths, has a significant correlation with the minimum temperature in April and the summer precipitation over the past 50 years. This study investigated the relationship between climate and Pinus koraiensis net primary productivity (NPP) (estimated using tree-ring widths) and(More)
Warming-induced drought has widely affected forest dynamics in most places of the northern hemisphere. In this study, we assessed how climate warming has affected Picea crassifolia (Qinghai spruce) forests using tree growth-climate relationships and the normalized difference vegetation index (NDVI) along the Qilian Mountains, northeastern Tibet Plateau (the(More)
Tuyuhun and Tubo were two important states that thrived in north-western China during AD 311-900 in parallel with the Han Chinese dynasties of Sui and Tang periods. The Reshui Tomb Cluster located in Dulan County of the north-eastern Tibetan Plateau is an important cultural relic of the Tuyuhun-Tubo age. The official excavations of the Reshui tombs were(More)
Both temperature and precipitation are strong factors of radial tree growth at all elevations in the semi-arid study area, except at the upper treeline where temperature becomes the major controlling factor. Several recent studies across the Tibetan Plateau found consistent growth–climate relations at all elevations from the lower treelines to the upper(More)