A5060795553- Groundwater and Isotope Geochemistry
- Geology and Paleoclimatology Research
- Karst Systems and Hydrogeology
- Marine and coastal ecosystems
- Atmospheric chemistry and aerosols
- Air Quality and Health Impacts
- Heavy metals in environment
- earthquake and tectonic studies
- Hydrocarbon exploration and reservoir analysis
- Soil and Water Nutrient Dynamics
- Geological and Geochemical Analysis
- Mercury impact and mitigation studies
- Methane Hydrates and Related Phenomena
- Geochemistry and Geologic Mapping
- Air Quality Monitoring and Forecasting
- High-pressure geophysics and materials
- Atmospheric and Environmental Gas Dynamics
- Hydrology and Watershed Management Studies
- Groundwater flow and contamination studies
- Atmospheric Ozone and Climate
- Isotope Analysis in Ecology
- Soil Carbon and Nitrogen Dynamics
- Water Quality and Pollution Assessment
- Geochemistry and Elemental Analysis
- Climate variability and models
Tianjin University
2016-2025
Tianjin Meteorological Bureau
2023
Institute of Geochemistry
2006-2016
Chinese Academy of Sciences
2006-2016
University of Chinese Academy of Sciences
2006
Toyama Industrial Technology Center
2002
Nitrate pollution of the karstic groundwater is an increasingly serious problem with development Guiyang, capital city Guizhou Province, southwest China. The higher content NO3- in compared to surface water during both summer and winter seasons indicates that system cannot easily recover once contaminated nitrate. In order assess sources conversion nitrate we analyzed major ions, delta(15)N-NH4+, delta(15)N-NO3-, delta(18)O-NO3- samples collected seasons. results show dominant species...
Abstract Changes in the intensity of East Asian summer monsoon (EASM) are critical for regulating regional hydrology, ecology, and human civilization, especially vicinity limit (SML). However, detailed spatial variations SML mainland China over past 2000 years uncertain due to lack high-resolution paleoclimate archives. As a result, accurate location during transition from Medieval Warm Period (MWP) Little Ice Age (LIA), as well its impacts on ecology society, poorly understood. Here, we...
Abstract Increasing lines of evidence question the homogenous response Asian Summer Monsoon (ASM) precipitation patterns, requiring rethinking forcing mechanisms. Here we show a ~15,000‐year quantitative history based on well‐dated lake levels at Lake Chenghai, subtropical China. and inferred were high during Bølling‐Allerød, early late Holocene, but low middle Holocene. The orbital scale trend is out phase with boreal summer insolation, later has been widely suggested as driver ASM...
The episodic growth of high-elevation orogenic plateaux is controlled by a series geodynamic processes. However, determining the underlying mechanisms that drive plateau dynamics over geological history and constraining depths at which originates, remains challenging. Here we present He-CO2-N2 systematics hydrothermal fluids reveal existence lithospheric-scale fault system in southeastern Tibetan Plateau, whereby multi-stage occurred past continues to present. He isotopes provide unambiguous...
Snow serves as a vital scavenging mechanism to gas-phase and particle-phase organic nitrogen substances in the atmosphere, providing significant link between land-atmosphere flux of surface-earth system. Here, we used optical instruments (UV–vis excitation-emission matrix fluorescence) Fourier transform ion cyclotron resonance mass spectrometer (FT-ICR MS) elucidate molecular composition potential precursors snow samples collected simultaneously at four megacities North China. The elemental...
Abstract The concentration and isotopic composition of nitrate were analyzed to improve an understanding sources transformation processes in a typical karstic agricultural field the Houzhai catchment, Guizhou Province, Southwest China. results revealed that no distinct spatial pattern content exists this karst catchment. Nitrate surface stream (SFS) had slightly lighter lower compared with subterranean (STS) during dry season. Concentrations SFS increased concentrations similar those STS wet...
Abstract. Biomass burning and primary biological aerosol particles account for an important part of urban aerosols. Floods studies have been conducted on the chemical compositions fine aerosols (PM2.5) in megacities where haze pollution is one severe environmental issues China. However, little known about their size distributions atmospheric boundary layer. Here, size-segregated samples were collected Beijing during clear days from April 2017 to January 2018. Three anhydrosugars, six...
Abstract The Karakoram fault (KKF) is an important strike‐slip boundary for accommodating deformation following the India‐Asia collision. However, whether confined to crust or it extends into mantle remains highly debated. Here, we show that KKF overwhelmingly dominated by crustal degassing related a 4 He‐ and CO 2 ‐rich fluid reservoir (for example, He contents up ∼1.0–1.6 vol.%; 3 He/ = 0.027 ± 0.013 R A (1 σ , n 47); /N 3.7–57.8). Crustal‐scale active driven faulting could mobilize from...
Abstract The active Himalayan-Tibetan orogen, where India underthrusts into Asia, is an important geological source of carbon dioxide (CO 2 ) emission Earth’s atmosphere. However, the extent to which Indian underthrusting could stimulate mobilization deeply-sourced and its subsequent remains unknown. Here, we use a combination field observations coupled with in-situ CO flux measurements helium isotopic data, study controls on origins fluxes in 400-kilometre-long rift transecting northern...
Because of active exchange between surface and groundwater a karstic hydrological system, the Guiyang, capital city Guizhou Province, southwest China, has been seriously polluted by anthropogenic inputs NO3−, SO42−, Cl−, Na+. In this work, δ37Cl chloride δ34S variations sulfate in surface/groundwater system were studied, with main focus to identify contaminant sources, including their origins. The surface, ground, rain, sewage water studied showed variable values, range −4.1 +2.0‰, −20.4...