A5100611277- Marine and coastal ecosystems
- Atmospheric chemistry and aerosols
- Climate change impacts on agriculture
- Toxic Organic Pollutants Impact
- Climate variability and models
- Hydrology and Drought Analysis
- Microbial bioremediation and biosurfactants
- Air Quality and Health Impacts
- Radioactive element chemistry and processing
- Advanced oxidation water treatment
- Geochemistry and Elemental Analysis
- Atmospheric aerosols and clouds
- Isotope Analysis in Ecology
- Algal biology and biofuel production
- Mercury impact and mitigation studies
- Photosynthetic Processes and Mechanisms
- Iron oxide chemistry and applications
- Groundwater flow and contamination studies
- Arsenic contamination and mitigation
- Environmental Changes in China
- Chemical Reactions and Isotopes
- Environmental remediation with nanomaterials
- Rangeland Management and Livestock Ecology
- Environmental Quality and Pollution
- Remote Sensing and LiDAR Applications
University of Chinese Academy of Sciences
2011-2025
Guangzhou Institute of Geochemistry
2023-2025
Chinese Academy of Sciences
2011-2024
China University of Geosciences
2020-2024
Ocean University of China
2022-2023
Inner Mongolia University
2022
Institute of Atmospheric Physics
2020-2021
Lanzhou University
2016-2017
Qingdao Institute of Bioenergy and Bioprocess Technology
2011-2013
Abstract Desertification is the impoverishment of arid, semiarid, and some subhumid ecosystems. The assessment global scale desertification vulnerability to climate change human activity important help decision makers formulate best strategies for land rehabilitation combat in sensitive areas. There no map that considers both activities. main aim this study was construct a new index, index (GDVI), by combining activity, provide another perspective on scale, project its future evolution....
Reactive oxygen species (ROS) production in O2-perturbed subsurface environments has been increasingly documented recent years. However, the constraining conditions under which abiotic and/or biotic mechanisms predominate for ROS remain ambiguous. Here, we demonstrate that mechanism, and abiotic, is determined by sediment redox properties compositions. Upon oxygenation of 10 field sediments, cumulative H2O2 concentrations reached up to 554 μmol/kg within 2 h. The autoclaving sterilization...
Hydroxyl radical (•OH) production by electron transfer from Fe(II)-bearing clay minerals to oxygen has been increasingly reported. However, the influence of ubiquitous coexisting humic acid (HA) on this process is poorly understood. Here, we investigated effect different HA •OH during oxygenation reduced nontronite NAu-2 (rNAu-2), montmorillonite, and sediment. Results showed that could enhance production, enhancement was related content reactive Fe(II) in rNAu-2 electron-accepting capacity...
Dark formation of hydroxyl radicals (•OH) from soil/sediment oxygenation has been increasingly reported, and solid Fe(II) is considered as the main electron donor for O2 activation. However, role organic matter (SOM) in •OH production not clear, although it represents an important pool subsurface. In this study, reduced humic acid (HAred) was investigated at pH 7.0. linearly correlated with electrons released HAred suspension. Solid transferred rapidly to via surface-reduced moieties...
Significance of reactive oxygen species (ROS) in subsurface has been increasingly documented recent years, whereas the mechanisms controlling ROS production and distribution remain poorly understood. Here we show that water table fluctuations regulate dynamics hydrogen peroxide (H2O2) unconfined aquifers. In one hydrological year, measured H2O2 an aquifer impacted by a 14 m level fluctuation adjacent Yangtze River. concentrations groundwater attained up to 123 nM at rising stage summer, but...
Hydrogen peroxide (H2O2) and hydroxyl radical (•OH) production during oxygenation of reduced iron (Fe(II)) natural organic matter (NOM) in the subsurface has been increasingly discovered, whereas effect C/Fe molar ratio Fe(II) NOM coexisting systems remains poorly understood. In this study, aqueous humic acid (HAred) mixture at different ratios (0-20) were oxygenated. Results show that both H2O2 •OH accumulation increased almost linearly with increase ratio, a more prominent high ratios. At...
Electron transfer (ET) is the essence of most biogeochemical processes related to element cycling and contaminant attenuation, whereas ET between different minerals controlling mechanism remain elusive. Here, we used surface-associated Fe(II) as a proxy explore reduced nontronite NAu-2 (rNAu-2) Fe (hydr)oxides in their coexisting systems. Results showed that could occur from rNAu-2 ferrihydrite but not goethite, amount was determined by number reactive sites reduction potential difference...
Novel brominated flame retardants (NBFRs) and dechlorane plus (DP) have been widely used as alternatives to traditional BFRs. However, little is known about the temporal trends of NBFR DP pollution in e-waste recycling sites. In current study, three composite sediment cores were collected from an e-waste-polluted pond located a typical site South China investigate historical occurrence composition NBFRs DP. The detected all layers with concentration ranges 5.71~180,895 4.95~109,847 ng/g dw,...
Abstract. Although anthropogenic dust has received more attention from the climate research community, its dominant role in production process is still not identified. In this study, we analysed relationship between and population density/change over global semi-arid regions found that are major source producing dust. The results showed obvious cropland than other land cover types (crop mosaics, grassland, urbanized regions) of increases as density grows to 90 persons km−2. Four selected...
Abstract Enhanced near‐surface atmospheric warming has occurred over East Asia in recent decades, especially drylands. Although local factors have been confirmed to provide considerable contributions this warming, such not sufficiently analyzed. In study, we extracted the radiatively forced temperature (RFT) associated with built‐up greenhouse gases, aerosol emission, and various other radiative forcing found a close relationship between RFT CO 2 . addition, using climate model experiments,...
A trophic position (TP) model (TPmix model) that simultaneously considered discrimination factor and βGlu/Phe variations was developed in this study first applied to investigate the transfer of halogenated organic pollutants (HOPs) wetland food webs. The TPmix characterized structure web more accurately significantly improved reliability TMF compared TPbulk, TPAAs, TPsimmr models, which were calculated based on methods stable nitrogen isotope analysis bulk, traditional AAs-N-CSIA, weighted...
Abstract The present study utilizes the standard precipitation index (SPI) to differentiate Asian summer droughts that are associated with variations of over periods 3, 9 and 24 months (termed as short‐term, medium‐term long‐term droughts, respectively). Then, relationships between these atmospheric circulation, sea surface temperature (SST), soil moisture investigated. While spatial temporal characteristics short‐term fairly similar, display different features. leading mode exhibits a...
Abstract Drought variations are determined by precipitation and temperature changes. The present study examines the relative contributions of to temporal short‐term, medium‐term long‐term droughts over Asia. This is accomplished comparing (a) Standardized Precipitation Index (SPI) Evapotranspiration (SPEI) that extend 3, 9 24 months (i.e., droughts, respectively) (b) strength relationship SPEI temperature. Both contribute north–south dipole pattern short‐term with a relatively larger...
Liquid crystal monomers (LCMs) are emerging organic pollutants due to their potential persistence, toxicity, and bioaccumulation. This study first characterized the levels compositions of 19 LCMs in organisms Pearl River Estuary (PRE), estimated bioaccumulation trophic transfer potential, identified priority contaminants. were generally accumulated from sediment, LCM concentrations all ranged 32.35 1367 ng/g lipid weight. The main biphenyls analogues (BAs) (76.6%), followed by cyanobiphenyls...
Abstract. Dust emissions refer to the spatial displacement of dust particles from wind forcing, which is a key component circulation. It plays an important role in energy, hydrological, and carbon cycles Earth's systems. However, most emission schemes only consider natural dust, neglecting anthropogenic induced by human activities, led large uncertainties quantitative estimations numerical modeling. To fully mechanisms emissions, both indirect direct were constructed developed study....