A5077575953- Geology and Paleoclimatology Research
- Pleistocene-Era Hominins and Archaeology
- Tree-ring climate responses
- Isotope Analysis in Ecology
- Archaeology and ancient environmental studies
- Ecology and Vegetation Dynamics Studies
- Geological formations and processes
- Marine and environmental studies
- Species Distribution and Climate Change
- Lichen and fungal ecology
- Cryospheric studies and observations
- Plant Ecology and Soil Science
- Microbial Community Ecology and Physiology
- Environmental DNA in Biodiversity Studies
- Pacific and Southeast Asian Studies
- Climate change and permafrost
- Climate variability and models
- Geological Studies and Exploration
- Remote Sensing and Land Use
- Landslides and related hazards
- Rangeland Management and Livestock Ecology
- Paleontology and Stratigraphy of Fossils
- Evolution and Paleontology Studies
- Fire effects on ecosystems
- Coastal wetland ecosystem dynamics
Institute of Tibetan Plateau Research
2018-2025
Chinese Academy of Sciences
2013-2025
Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung
2014-2023
Zhejiang Normal University
2023
Center for Excellence in Tibetan Plateau Earth Sciences
2019-2021
Institute of Archaeology and Ethnography
2020-2021
University of Potsdam
2013-2017
Hebei Normal University
2008-2016
University of Chinese Academy of Sciences
2013
Institute of Botany
2013
Abstract The lack of a precisely-dated, unequivocal climate proxy from northern China, where precipitation variability is traditionally considered as an East Asian summer monsoon (EASM) indicator, impedes our understanding the behaviour and dynamics EASM. Here we present well-dated, pollen-based, ~20-yr-resolution quantitative reconstruction (derived using transfer function) alpine lake in North which provides for first time direct record EASM evolution since 14.7 ka (ka = thousands years...
Proxy-based reconstructions and modeling of Holocene spatiotemporal precipitation patterns for China Mongolia have hitherto yielded contradictory results indicating that the basic mechanisms behind East Asian Summer Monsoon its interaction with westerly jet stream remain poorly understood. We present quantitative derived from 101 fossil pollen records analyse them help a minimal empirical model. show jet-stream axis shifted gradually southward became less tilted since middle Holocene. This...
Understanding the history and regional singularities of human impact on vegetation is key to developing strategies for sustainable ecosystem management. In this study, fossil modern pollen datasets from China are employed investigate temporal changes in composition, analogue quality, diversity during Holocene. Anthropogenic disturbance vegetation's responses also assessed. Results reveal that assemblages non-forest communities fail provide evidence western part (annual precipitation less...
Soil dissolved organic matter (DOM) is crucial to atmospheric, terrestrial and aquatic environments as well human life. Here, by characterizing DOM from 89 grassland soils throughout China, we reveal the spatial association between geochemistry in dry season vs annual ecosystem exchange cancer cases. The humic-like high molecular weight (3.4–25 kDa) fractions with lower biodegradability, decline northern southern regions of are correlated soil respiration net productivity at continental...
Abstract A comprehensive understanding of the regional vegetation responses to long‐term climate change will help forecast Earth system dynamics. Based on a new well‐dated pollen data set from Kanas Lake and review published records in around Altai Mountains, dynamics forcing mechanisms are discussed. In forest optimum occurred during 10–7 ka for upper zone tree line decline and/or ecological shifts were caused by climatic cooling 7 ka. lower zone, reached an middle Holocene, then increased...
A cal. 20-year-resolution pollen record from Gonghai Lake presented the detailed process of mountain vegetation succession and East Asian Summer Monsoon (EASM) changes since last deglaciation in Shanxi Province, North China. Modern distribution lake surface assemblages suggested that fossil mainly came local surrounding Lake, which reflected elevational plant communities study area. From 14,700 to 11,100 yr BP, open forests meadows dominated by shrubs herbaceous species area, suggesting a...
Abstract. Here we describe LegacyClimate 1.0, a dataset of the reconstruction mean July temperature (TJuly), annual (Tann), and precipitation (Pann) from 2594 fossil pollen records Northern Hemisphere, spanning entire Holocene, with some reaching back to Last Glacial Period. Two methods, modern analog technique (MAT) weighted averaging partial least squares regression (WA-PLS), reveal similar results regarding spatial temporal patterns. To reduce impact on reconstruction, vice versa, also...
Abstract. A mismatch between model- and proxy-based Holocene climate change, known as the “Holocene conundrum”, may partially originate from poor spatial coverage of reconstructions in, for example, Asia, limiting number grid cells model–data comparisons. Here we investigate hemispheric, latitudinal, regional mean time series time-slice anomaly maps pollen-based annual temperature, July precipitation 1908 records in Northern Hemisphere extratropics. Temperature trends show strong latitudinal...
The term "Holocene temperature conundrum" refers to the inconsistencies between proxy-based reconstructions and transient model simulations, it challenges our understanding of global evolution during Holocene. Climate indicate a cooling trend following Holocene Thermal Maximum, while simulations consistent warming due ice-sheet retreat rising greenhouse gas concentrations. Various factors, such as seasonal biases overlooked feedback processes, have been proposed potential causes for this...
This study investigates the spatial and temporal distributions of 14 key arboreal taxa their driving forces during last 22,000 calendar years before ad 1950 (kyr BP) using a taxonomically harmonized temporally standardized fossil pollen dataset with 500-year resolution from eastern part continental Asia. Logistic regression was used to estimate abundance thresholds for vegetation occurrence (presence or dominance), based on modern data present ranges in China. Our investigation reveals...
Abstract. We collected the available relative pollen productivity estimates (PPEs) for 27 major taxa from Eurasia and applied them to estimate plant abundances during last 40 ka cal BP (calibrated thousand years before present) using counts 203 fossil records in northern Asia (north of 40∘ N). These were organized into 42 site groups regional mean calculated REVEALS (Regional Estimates Vegetation Abundance Large Sites) model. Time-series clustering, constrained hierarchical detrended...
Abstract. A modern pollen dataset with an even distribution of sites is essential for pollen-based past vegetation and climate estimations. As there were geographical gaps in previous datasets covering the central eastern Tibetan Plateau, lake surface sediment samples (n=117) collected from alpine meadow region on Plateau between elevations 3720 5170 m a.s.l. Pollen identification counting based standard approaches, data interpolated a robust meteorological dataset. series numerical analyses...