A5063100739- Atmospheric and Environmental Gas Dynamics
- Climate variability and models
- Soil Carbon and Nitrogen Dynamics
- Soil and Water Nutrient Dynamics
- Atmospheric chemistry and aerosols
- Plant Water Relations and Carbon Dynamics
- Land Use and Ecosystem Services
- Remote Sensing in Agriculture
- Peatlands and Wetlands Ecology
- Hydrology and Watershed Management Studies
- Groundwater and Isotope Geochemistry
- Climate change impacts on agriculture
- Urban Heat Island Mitigation
- Atmospheric Ozone and Climate
- Fire effects on ecosystems
- Flood Risk Assessment and Management
- Agriculture Sustainability and Environmental Impact
- Plant responses to elevated CO2
- Hydrological Forecasting Using AI
- Species Distribution and Climate Change
- Forest Management and Policy
- Crop Yield and Soil Fertility
- Ecology and Vegetation Dynamics Studies
- Rangeland Management and Livestock Ecology
- Phosphorus and nutrient management
Iowa State University
2016-2025
Ruijin Hospital
2024-2025
Shanghai Jiao Tong University
2024-2025
Shanghai Institute of Hematology
2024-2025
Shanghai Electric (China)
2024
University of Wisconsin–Madison
2022
Changzhou University
2022
Auburn University
2009-2018
Institute of Geographic Sciences and Natural Resources Research
2007
Chinese Academy of Sciences
2007
Abstract. In addition to enhancing agricultural productivity, synthetic nitrogen (N) and phosphorous (P) fertilizer application in croplands dramatically alters global nutrient budget, water quality, greenhouse gas balance, their feedback the climate system. However, due lack of geospatial input data, current Earth system land surface modeling studies have ignore or use oversimplified data (e.g., static, spatially uniform use) characterize N P over decadal century-long periods. this study,...
Anthropogenic nitrous pollutant emissions in China significantly increased during the last decades, which contributed to accelerated nitrogen (N) deposition. In order characterize spatial pattern of deposition, we employed kriging technique interpolate sampling data precipitation chemistry and ambient air concentration from site‐network observations over China. The estimation wet deposition was limited aqueous NO 3 − NH 4 + , while 2 only species involved predicted dry fluxes. To obtain...
Abstract Soil is the largest organic carbon (C) pool of terrestrial ecosystems, and C loss from soil accounts for a large proportion land‐atmosphere exchange. Therefore, small change in (SOC) can affect atmospheric dioxide (CO 2 ) concentration climate change. In past decades, wide variety studies have been conducted to quantify global SOC stocks exchange with atmosphere through site measurements, inventories, empirical/process‐based modeling. However, these estimates are highly uncertain,...
Our understanding and quantification of global soil nitrous oxide (N2 O) emissions the underlying processes remain largely uncertain. Here, we assessed effects multiple anthropogenic natural factors, including nitrogen fertilizer (N) application, atmospheric N deposition, manure land cover change, climate rising CO2 concentration, on N2 O for period 1861-2016 using a standard simulation protocol with seven process-based terrestrial biosphere models. Results suggest have increased from 6.3 ±...
The magnitude, spatial, and temporal patterns of the terrestrial carbon sink underlying mechanisms remain uncertain need to be investigated.China is important in determining global balance terms both emission uptake.Of particular importance climate-change policy management ability evaluate relative contributions multiple environmental factors net source China's ecosystems.Here effects (climate, atmospheric CO 2 , ozone pollution, nitrogen deposition, fertilizer application, land cover/land...
Abstract Understanding the role of climate extremes and their impact on carbon (C) cycle is increasingly a focus Earth system science. Climate such as droughts, heat waves, or heavy precipitation events can cause substantial changes in terrestrial C fluxes. On other hand, extreme fluxes are often, but not always, driven by conditions. Here we present an analysis how temperature precipitation, related to each 10 state‐of‐the‐art models, all same forcing. We use model outputs from North...
In rice cultivation, there are controversial reports on net impacts of nitrogen (N) fertilizers methane (CH 4 ) emissions. Nitrogen increase crop growth as well alter CH producing (Methanogens) and consuming (Methanotrophs) microbes, thereby produce complex effects Objectives this study were to determine impact N emissions identify their underlying mechanisms in the soils. Database was obtained from 33 published papers that contained observations fertilizer (28-406 kg ha-1 treatment its...
Abstract. Ecosystems are important and dynamic components of the global carbon cycle, terrestrial biospheric models (TBMs) crucial tools in further understanding how is stored exchanged with atmosphere across a variety spatial temporal scales. Improving TBM skills, quantifying reducing their estimation uncertainties, pose significant challenges. The Multi-scale Synthesis Terrestrial Model Intercomparison Project (MsTMIP) formal multi-scale multi-model intercomparison effort set up to tackle...
<strong class="journal-contentHeaderColor">Abstract.</strong> Terrestrial biosphere models (TBMs) have become an integral tool for extrapolating local observations and understanding of land–atmosphere carbon exchange to larger regions. The North American Carbon Program (NACP) Multi-scale synthesis Model Intercomparison Project (MsTMIP) is a formal model intercomparison evaluation effort focused on improving the diagnosis attribution at regional global scales. MsTMIP builds upon current past...
Abstract Greenhouse gas (GHG)‐induced climate change is among the most pressing sustainability challenges facing humanity today, posing serious risks for ecosystem health. Methane (CH 4 ) and nitrous oxide (N 2 O) are two important GHGs after carbon dioxide (CO ), but their regional global budgets not well known. In this study, we applied a process‐based coupled biogeochemical model to concurrently estimate magnitude spatial temporal patterns of CH N O fluxes as driven by multiple...
Abstract Nitrous oxide (N 2 O) is an important greenhouse gas and also ozone-depleting substance that has both natural anthropogenic sources. Large estimation uncertainty remains on the magnitude spatiotemporal patterns of N O fluxes key drivers production in terrestrial biosphere. Some biosphere models have been evolved to account for nitrogen processes show capability simulate emissions from land ecosystems at global scale, but large discrepancies exist among their estimates primarily...
Abstract Carbon budget accounting relies heavily on Food and Agriculture Organization land-use data reported by governments. Here we develop a new cover-change database for China, finding that differing historical survey methods biased China’s causing large errors in databases. Land ecosystem model simulations driven with the reveal strong carbon sink of 8.9 ± 0.8 Pg from 1980 to 2019 which was not captured data-based estimations due signals. The characterized rapid forest expansion 2019,...
Terrestrial ecosystems play a vital role in regulating the accumulation of carbon (C) atmosphere. Understanding factors controlling land C uptake is critical for reducing uncertainties projections future climate. The relative importance changing climate, rising atmospheric CO
Abstract. A tremendous amount of anthropogenic nitrogen (N) fertilizer has been applied to agricultural lands promote crop production in the US since 1850s. However, inappropriate N management practices have caused numerous ecological and environmental problems which are difficult quantify due paucity spatially explicit time-series use maps. Understanding assessing history could provide important implications for enhancing efficiency reducing loss. In this study, we therefore developed...
Abstract. Given the important role of nitrogen input from livestock systems in terrestrial nutrient cycles and atmospheric chemical composition, it is vital to have a robust estimation magnitude spatiotemporal variation manure production its application cropland across globe. In this study, we used dataset Global Livestock Impact Mapping System (GLIMS) conjunction with country-specific annual populations reconstruct during 1860–2014. The estimated increased 21.4 Tg N yr−1 1860 131.0 2014...
Abstract. Nitrous oxide (N2O) is a long-lived potent greenhouse gas and stratospheric ozone-depleting substance that has been accumulating in the atmosphere since preindustrial period. The mole fraction of atmospheric N2O increased by nearly 25 % from 270 ppb (parts per billion) 1750 to 336 2022, with fastest annual growth rate 1980 more than 1.3 yr−1 both 2020 2021. According Sixth Assessment Report Intergovernmental Panel on Climate Change (IPCC AR6), relative contribution total enhanced...
Abstract Forest carbon sequestration capacity in China remains uncertain due to underrepresented tree demographic dynamics and overlooked of harvest impacts. In this study, we employ a process-based biogeochemical model make projections by using national forest inventories, covering approximately 415,000 permanent plots, revealing an expansion biomass stock 13.6 ± 1.5 Pg C from 2020 2100, with additional sink through augmentation wood product pool (0.6-2.0 C) spatiotemporal optimization...
[1] China's terrestrial ecosystems have been recognized as an atmospheric CO2 sink; however, it is uncertain whether this sink can alleviate global warming given the fluxes of CH4 and N2O. In study, we used a process-based ecosystem model driven by multiple environmental factors to examine net potential resulting from exchanges CO2, CH4, N2O between atmosphere during 1961–2005. past 45 years, were found sequestrate at rate 179.3 Tg C yr−1 with 95% confidence range (62.0 yr−1, 264.9 yr−1)...
Abstract. Continental-scale estimations of terrestrial methane (CH4) and nitrous oxide (N2O) fluxes over a long time period are crucial to accurately assess the global balance greenhouse gases enhance our understanding prediction climate change ecosystem feedbacks. Using process-based biogeochemical model, Dynamic Land Ecosystem Model (DLEM), we quantified simultaneously CH4 N2O in North America's ecosystems from 1979 2008. During past 30 years, approximately 14.69 ± 1.64 T g C a−1 (1 = 1012...
The terrestrial ecosystems of North America have been identified as a sink atmospheric CO2 though there is no consensus on the magnitude. However, emissions non-CO2 greenhouse gases (CH4 and N2O) may offset or even overturn climate cooling effect induced by sink. Using coupled biogeochemical model, in this study, we estimated combined global warming potentials (GWP) CO2, CH4 N2O fluxes American quantified relative contributions environmental factors to GWP changes during 1979-2010....