Liangcheng Tan

Liangcheng Tan
Chinese Academy of Sciences | CAS · Institute of Earth Environment

Ph.D

About

102
Publications
56,553
Reads
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3,362
Citations
Introduction
My recent interests include Holocene climate change and culture dynamics, karst enviroment change, speleothem geochemistry, Anthropocene environmental change
Additional affiliations
February 2017 - present
Institute of Earth Environment, Chinese Academy of Sciences
Position
  • Professor (Full)
April 2016 - March 2017
University of Texas at San Antonio
Position
  • Research Associate

Publications

Publications (102)
Article
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Tropical rainfall variability is closely linked to meridional shifts of the Intertropical Convergence Zone (ITCZ) and zonal movements of the Walker circulation. The characteristics and mechanisms of tropical rainfall variations on centennial to decadal scales are, however, still unclear. Here, we reconstruct a replicated stalagmite-based 2,700-y-lo...
Article
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Arid Central Asia (ACA), with its diverse landscapes of high mountains, oases, and deserts, hosted the central routes of the Silk Roads that linked trade centers from East Asia to the eastern Mediterranean. Ecological pockets and ecoclines in ACA are largely determined by local precipitation. However, little research has gone into the effects of hy...
Article
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Here we present, to date, the highest‐resolved (~5 years) and most precisely dated Holocene monsoon climate reconstruction for the western Chinese Loess Plateau based on five replicated stalagmite δ18O records from Wuya Cave, eastern Gansu, China. Our record suggests the wettest period occurred between 10,500 and 6,600 a BP in this region. After th...
Article
Seasonality of precipitation in the Asian monsoon region has significant impacts on social and economic development. Here, we analyzed a seasonally resolved δ¹⁸O series of an annually laminated stalagmite from Xianglong Cave to assess its potential as a proxy for seasonal precipitation. The δ¹⁸O values reveal fabric-correlated annual cycles, with l...
Article
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In recent years, more and more record-breaking extreme weather/climate events have been reported from the Asian monsoon region, which have caused tremendous loss of property and lives. In this paper, we analyzed the Asian summer monsoon (ASM) variability during the Holocene and evaluated future climate extremes in monsoonal China from a paleoclimat...
Article
The 4.2 ka event is widely presumed to be a globally widespread aridity event and has been linked to several episodes of societal changes across the globe. Whether this climate event impacted the cultural development in south-central China remains uncertain due to a lack of regional paleorainfall records. We present here stalagmite stable carbon is...
Article
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To interpret the climatic signals of precipitation/speleothem δ ¹⁸ O, it is critical to identify the importance of the factors affecting the precipitation δ ¹⁸ O. This study presents new stable isotope data for precipitation δ ¹⁸ O and δD in the site of Shenqi cave, southwest China, from November-2015 to October-2016 (the “Super-El Niño” event), to...
Article
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The dissolved uranium (U) content in the water column of saline lakes varies little between ice-free seasons throughout the whole water column. Such uniformity allows for the potential absolute dating and/or paleohydrologic interpretations of lake sediments and biogenic shell materials using U isotopes. Before using these methods in cold regions, h...
Article
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High‐resolution XRF scanning is widely used on marine and lake sediment cores as a means of rapidly acquiring elemental concentrations from closely spaced intervals with no damage to the samples. Therefore, guidance on how to obtain reliable datasets and select suitable step sizes for different geological media are of great importance. Here we appl...
Article
The Cenomanian (Upper Cretaceous) Maha Sarakham Formation of the Khorat Basin, northeastern Thailand consists of three evaporite units (Lower, Middle and Upper Salt) interbedded with clastic sediments and exhibits abundant deposits of potash. Although numerous studies have been carried out on the Khorat potash deposit, results are still equivocal w...
Article
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The history and mechanisms of dust storms in northern China remain unclear owing to the paucity of reliable long-term, high-resolution geological records. In this study, we reconstructed the dust storm history of the last ~500 years in northern China, based on sedimentary coarse fraction (>63 µm) of a well-dated core from Lake Daihai, Inner Mongoli...
Article
Knowledge of the interactions between atmospheric dynamics, dust emissions and climate system are essential to understand the physical mechanisms for the dust lifecycle, their role in loess formation as well as the predictions of future dust concentration. However, these issues still remain relatively poorly known in Central Asia (CA). The extensiv...
Article
Here we present a decadal-resolved hydroclimate record covering the past 11 thousand years based on δ18O data of three stalagmites from Klang Cave (TK) on the Thai-Malay Peninsula, southern Thailand. The δ18O values indicate wetter conditions/more rainfall during the early Holocene from 11 to 7 thousand years before present (kyr BP). A large increa...
Article
Speleothem records from NE Asia are essential to understand the spatial patterns of the Asian Summer Monsoon (ASM) variability. In this paper, we present a new high-resolution and chronologically well-resolved speleothem record from Liu-li (LL) cave, NE China, through δ¹⁸O, δ¹³C and Sr/Ca ratio characterizing a dynamic ASM history over the past 668...
Article
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As important node cities in the Belt and Road region, Shenzhen and Bangkok are faced with similar environmental threats posed by the high‐speed social development process. Rapid urbanization leads to changes in vegetation growth and land cover types and then affects ecosystem services. In the current study, we used a time‐series normalized differen...
Article
Evaluating anthropogenic impacts on regional vegetation changes during historical time is not only important for a better understanding of the Anthropocene but also valuable in improving the vegetation-climate models. In this study, we analyzed stable isotopes (δ18O, δ13C) and trace elements (Mg/Ca, Sr/Ca) of a stalagmite from Huangchao Cave in cen...
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Plain Language Summary We present a 15,000‐year record of southern China precipitation based on well‐dated (n=130 radiometric ages) lake level variations of a closed basin lake. The reconstructed long‐term southern China precipitation trend is out of phase with boreal summer insolation, which has been shown to drive ASM precipitation, but broadly f...
Article
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Four saline lakes in the northeast of Qaidam Basin were selected to explore the distribution characteristics and influencing factors of uranium isotopes in lake waters with high evaporation background. The 238U concentration and the activity ratios of 234U/238U ([234U/238U]AR) showed that there was no significant change in the same lake, but there...
Article
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Changes in the intensity of the East Asian summer monsoon (EASM) are critical for regulating the regional hydrology, ecology, and human civilization, especially in the vicinity of the summer monsoon limit (SML). However, the detailed spatial variations of the SML in mainland China over the past 2000 years are uncertain due to the lack of high-resol...
Article
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As a unique continental archive, speleothem has been widely used in reconstructing paleoclimate change. However, the interpretation of Chinese speleothems δ¹⁸O has remained a subject of debate. Recently, a Community Atmosphere Model version 3 (CAM3) study indicated that the stalagmite δ¹⁸O from eastern China reflected the Indian summer monsoon (ISM...
Article
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XRF岩芯扫描分析方法在海洋和湖泊沉积环境变化方面的应用研究, 已取得了显著的成果. 然而, 目前其应用还没有广泛拓展到洞穴石笋的研究中. 在本文中, 我们利用最先进的第四代Avaatech高分辨率XRF岩芯扫描仪测试了3根石笋(2根文石石笋, 1根方解石石笋)的Sr元素以及Sr/Ca比值. 通过不同扫描路径之间和不同扫描分辨率之间的对比, 以及与ICP-OES、 Itrax XRF和Artax XRF结果的对比, 证实了Avaatech XRF岩芯扫描仪可以准确、 快速、 无损地进行石笋高分辨率Sr元素的测试. 此外, 我们还结合石笋氧同位素记录, 尝试解释了所测石笋Sr/Ca的古气候意义.
Article
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Application of X-ray fluorescence core-scanning (XRF-CS) on both marine and lake sediments has achieved remarkable results. However, its application has not been widely extended to the research on speleothems. In this study, we measure the Sr abundance and the Sr/Ca ratios of three stalagmites (two aragonite stalagmites, one calcite stalagmite) usi...
Article
We present a highly resolved oxygen isotope (d18O) record of the penultimate glacial-interglacial transition from a 230Th-dated stalagmite (SD1) from the Shangxiaofeng Cave in north-eastern China. Our d18O record reveals two prominent features. First, the SD1 d18O record documents a brief increase of d18O between 128.5 and 128.1 ka BP. Though this...
Article
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Cave oxygen isotope (δ¹⁸O) records have been important in characterizing Asian Monsoon variations on a wide range of timescales. The climatic significance of the δ¹⁸O proxy of the cave records and its main control factors, however, remain hotly debated, especially with respect to annual to decadal timescales. In particular, while the spatial and in...
Article
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Although the collapses of several Neolithic cultures in China are considered to have been associated with abrupt climate change during the 4.2kaBP event (4.2–3.9kaBP), the timing and nature of this event and the spatial distribution of precipitation between northern and southern China are still controversial. The hydroclimate of this event in south...
Article
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Irregularly sampled time series usually require data preprocessing before a desired time-series analysis can be applied. We propose an approach for distance measuring of pairs of data points which is directly applicable to irregularly sampled time series. In order to apply recurrence plot analysis to irregularly sampled time series, we use this app...
Article
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Hydroclimatic variations over the eastern Central Asia are highly sensitive to changes in hemispheric-scale atmospheric circulation systems. To fully understand the long-term variability and relationship between hydroclimate and atmospheric circulation system, we present a high-resolution lascustrine record of late Holocene hydroclimate from Lake S...
Article
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The collapses of several Neolithic cultures in China are considered to have been associated with abrupt climate change during the 4.2ka event (4.2–3.9kaBP). The hydroclimate of this event in the monsoonal region of China, however, is still poorly known, except for a few published stalagmite records from the lower reaches of Yangtze River. In this s...
Article
Polarity reversals of the geomagnetic field have occurred through billions of years of Earth history and were first revealed in the early 20th century. Almost a century later, details of transitional field behavior during geomagnetic reversals and excursions remain poorly known. Here, we present a multidecadally resolved geomagnetic excursion recor...
Article
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In southeastern China (SEC), the precipitation amount produced by the East Asian summer monsoon (EASM) is almost equivalent to that during the non-summer monsoon (NSM) period, both of them significantly affecting agriculture and socioeconomy. Here, we present a seasonally-resolved stalagmite δ18O record (δ18Os) for the interval 1810-2009 AD from E'...
Article
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Climate changes on Southeastern Tibetan Plateau have important impacts on social and economic development, as well as the ecosystem of southwestern China and Indo-China Peninsula. Here, we collected two stalagmites from Shenqi (Miraculous) cave in southern Sichuan, China. The stalagmite d 18 O record shows good coherence with local instrumental rai...
Article
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Based on stable hydrogen and oxygen isotope data (δ18O, δD) and meteorological observation data for complete hydrological annual precipitation from 2016 to 2017 in the monsoon marginal region of northern China (Fengxiang and Ningwu), the isotopic characteristics of precipitation and the sources of water vapor in these two regions combined were stud...
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We conducted a statistical study to characterize the nonlinear response of the East Asian summer monsoon (EASM) to its potential forcing factors over the last 260 ka on orbital timescales. We find that both variation in solar insolation and global ice volume were responsible for the nonlinear forcing of orbital–scale monsoonal variations, accountin...
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The upper Hanjiang River region is the recharge area of the middle route of South-to-North Water Transfer Project. The region is under construction of the Hanjiang-Weihe River Water Transfer Project in China. Monsoon precipitation variations in this region are critical to water resource and security of China. In this study, high-resolution monsoon...
Article
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The precipitation variability associated with the East Asian summer monsoon (EASM) has profound societal implications. Here, we use precisely dated and seasonally-resolved stalagmite oxygen isotope (δ¹⁸O) records from Shihua Cave, North China to reconstruct the EASM variability over the last 145 years. Our record shows a remarkable weakening of the...
Article
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Based on an absolutely dated stalagmite δ18O record from Yunnan Province, China, we reconstructed monsoon precipitation variations in southwest China since 1760 AD with a resolution of about 2 years. Combining the speleothem δ18O and observed rainfall records, we find an overall decreasing trend in monsoon precipitation in this region and suggest t...
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Biogenic reefs and carbonate platforms are valuable natural resources, which play a role in modulating global climate and carbon cycle through biological processes. In this study, by combining paleomagnetic data and 230Th dating with lithostratigraphic characters for the XK-1 biogenic reef sequence from the Xisha Islands, northern South China Sea,...
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Background, aim, and scope: A lot of studies suggested the Holocene climate change had played an important role in the evolution of the Neolithic cultures around the world. During the Holocene, there were a series of abrupt climate changes. One of the abrupt events occurred around ~5 ka BP, which significantly changed the environment of many region...
Article
We employed multi-proxy indices retrieved from sediments in Lake Chaonaqiu, an alpine lake on the western Loess Plateau (LP) of China, to reconstruct a precipitation history over the last ~300 years. The results correlate well with records from tree rings and historical documents in neighboring regions. We show that the lake oscillated between two...
Conference Paper
Here we present yearly-resolved oxygen and carbon isotopic records, spanning the past 300 years (1700-2003 AD), on an aragonitic stalagmite sample YPXR5 retrieved from Xianren Cave in Yunnan province, southwestern China. The chronology of our records was determined by 35 high-precision U-Th dates, with 2-sigma error as small as ±1 year. The YPXR5...
Conference Paper
Mid-Holocene climate variations played an important role in the development of the Neolithic Age culture over the world. Here we reconstruct the hydrological variability history in SE Minnesota during 3000-7269 yr BP, by using high resolution stalagmite records from Holy Grail Cave. The grey level variations show significant negative correlation wi...
Article
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This article provides a comprehensive review of the global monsoon that encompasses findings from studies of both modern monsoons and paleomonsoons. We introduce a definition for the global monsoon that incorporates its three-dimensional distribution and ultimate causes, emphasizing the direct drive of seasonal pressure system changes on monsoon ci...
Article
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The collapse of some pre-historical and historical cultures, including Chinese dynasties were presumably linked to widespread droughts, on the basis of synchronicities of societal crises and proxy-based climate events. Here, we present a comparison of ancient inscriptions in Dayu Cave from Qinling Mountains, central China, which described accurate...
Article
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Understanding the processes and rates of groundwater recharge in arid and semi-arid areas is crucial for utilizing and managing groundwater resources sustainably. We obtained three chloride profiles of the unsaturated-zone in the desert/loess transition zone of northwestern China and reconstructed the groundwater recharge variations over the last 1...
Article
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A speleothem δ(18)O record from Xiaobailong cave in southwest China characterizes changes in summer monsoon precipitation in Northeastern India, the Himalayan foothills, Bangladesh, and northern Indochina over the last 252 kyr. This record is dominated by 23-kyr precessional cycles punctuated by prominent millennial-scale oscillations that are sync...