Xiaojuan Yang

ORCID: 0000-0002-2686-745X
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Research Areas
  • X-ray Diffraction in Crystallography
  • Crystallization and Solubility Studies
  • Soil Carbon and Nitrogen Dynamics
  • Atmospheric and Environmental Gas Dynamics
  • Peatlands and Wetlands Ecology
  • Plant Water Relations and Carbon Dynamics
  • Soil and Water Nutrient Dynamics
  • Crystallography and molecular interactions
  • Climate variability and models
  • Ecology and Vegetation Dynamics Studies
  • Marine and coastal ecosystems
  • Plant responses to elevated CO2
  • Electrokinetic Soil Remediation Techniques
  • Climate Change Policy and Economics
  • Atmospheric chemistry and aerosols
  • Forest ecology and management
  • Geophysical and Geoelectrical Methods
  • Coastal wetland ecosystem dynamics
  • Mycorrhizal Fungi and Plant Interactions
  • Botany and Plant Ecology Studies
  • Methane Hydrates and Related Phenomena
  • Phosphorus and nutrient management
  • Environmental Impact and Sustainability
  • Mine drainage and remediation techniques
  • Forest Management and Policy

Shihezi University
2025

Xi'an Technological University
2025

Oak Ridge National Laboratory
2015-2024

Zhejiang University of Technology
2023-2024

Shanghai Electric (China)
2024

Research Institute of Highway
2023

Ministry of Transport
2023

State Key Laboratory of Advanced Electromagnetic Engineering and Technology
2023

Nanning Normal University
2023

Huazhong University of Science and Technology
2022-2023

Abstract. In spite of the importance phosphorus (P) as a limiting nutrient in terrestrial ecosystems, our understanding P dynamics and ability to model cycling are hampered by lack consistent measurements soil P. The Hedley fractionation method provides comprehensive assessment has been widely used recent decades. Here we expand an earlier study that summarized data from literature create larger database further investigate relationships between distributions different forms stages...

10.5194/bg-8-2907-2011 article EN cc-by Biogeosciences 2011-10-17

Summary The first generation of forest free‐air CO 2 enrichment ( FACE ) experiments has successfully provided deeper understanding about how forests respond to an increasing concentration in the atmosphere. Located aggrading stands temperate zone, they have a strong foundation for testing critical assumptions terrestrial biosphere models that are being used project future interactions between productivity and atmosphere, despite limited inference space these with regards range global...

10.1111/nph.13593 article EN New Phytologist 2015-08-06

Abstract. Phosphorus (P) is a major element required for biological activity in terrestrial ecosystems. Although the total P content most soils can be large, only small fraction available or an organic form utilization because it bound either incompletely weathered mineral particles, adsorbed on surfaces, or, over time of soil formation, made unavailable by secondary formation (occluded). In order to adequately represent phosphorus availability global biogeochemistry–climate models,...

10.5194/bg-10-2525-2013 article EN cc-by Biogeosciences 2013-04-16

Abstract. Tropical forests play a significant role in the global carbon cycle and climate. However, tropical cycling feedbacks from ecosystems to climate system remain critical uncertainties current generation of carbon–climate models. One major comes lack representation phosphorus (P), currently believed be most limiting nutrient regions. Here we introduce P dynamics C–N–P interactions into CLM4-CN (Community Land Model version 4 with prognostic Carbon Nitrogen) model investigate...

10.5194/bg-11-1667-2014 article EN cc-by Biogeosciences 2014-03-28

Abstract This paper documents the biogeochemistry configuration of Energy Exascale Earth System Model (E3SM), E3SMv1.1‐BGC. The model simulates historical carbon cycle dynamics, including losses predicted in response to land use and cover change, responses changes climate. In addition, we introduce several innovations treatment soil nutrient limitation mechanisms, explicit dependence on phosphorus availability. suite simulations described here includes E3SM contributions Coupled...

10.1029/2019ms001766 article EN cc-by-nc Journal of Advances in Modeling Earth Systems 2020-08-28

The maximum photosynthetic carboxylation rate (Vcmax ) is an influential plant trait that has multiple scaling hypotheses, which a source of uncertainty in predictive understanding global gross primary production (GPP). Four trait-scaling hypotheses (plant functional type, nutrient limitation, environmental filtering, and plasticity) with nine specific implementations were used to predict Vcmax distributions their impact on GPP the Sheffield Dynamic Global Vegetation Model (SDGVM). varied...

10.1111/nph.14623 article EN New Phytologist 2017-06-23

Nitrogen cycle dynamics have the capacity to attenuate magnitude of global terrestrial carbon sinks and sources driven by CO 2 fertilization changes in climate. In this study, two versions nitrogen components Integrated Science Assessment Model (ISAM) are used evaluate how variation availability influences response over 20th century environmental factors including atmospheric concentration, inputs, temperature, precipitation land use. The ISAM vary their treatment availability: ISAM‐NC has a...

10.1029/2009gb003519 article EN Global Biogeochemical Cycles 2009-12-01

A comprehensive model of terrestrial N dynamics has been developed and coupled with the geographically explicit C cycle component Integrated Science Assessment Model (ISAM). The C‐N represents all major processes in interactions between that affect plant productivity soil litter decomposition. Observations from LIDET data set were compiled for calibration evaluation decomposition submodel within ISAM. For aboveground decomposition, is accomplished by optimizing parameters related to four...

10.1029/2009gb003474 article EN Global Biogeochemical Cycles 2009-12-01

Abstract Over the past several decades, land modeling community has recognized importance of nutrient regulation on global terrestrial carbon cycle. Implementations limitation in models are diverse, varying from applying simple empirical down‐regulation potential gross primary productivity under deficit conditions to more mechanistic treatments. In this study, we introduce a new approach model multinutrient (nitrogen [N] and phosphorus [P]) limitations Energy Exascale Earth System Model...

10.1029/2018ms001571 article EN cc-by-nc-nd Journal of Advances in Modeling Earth Systems 2019-06-22

The response of terrestrial ecosystems to rising atmospheric CO2 concentration (Ca ), particularly under nutrient-limited conditions, is a major uncertainty in Earth System models. Eucalyptus Free-Air Enrichment (EucFACE) experiment, recently established nutrient- and water-limited woodland presents unique opportunity address this uncertainty, but can best do so if key model uncertainties have been identified advance. We applied seven vegetation models, which previously comprehensively...

10.1111/gcb.13268 article EN Global Change Biology 2016-03-06

Abstract Phosphorus (P) availability in soils limits crop yields many regions of the World, while excess soil P triggers aquatic eutrophication other regions. Numerous processes drive global spatial distribution agricultural soils, but their relative roles remain unclear. Here, we combined several data sets describing these drivers with a dynamics model to simulate and assess contributions different at scale. We analysed both labile inorganic ( ILAB ), proxy pool involved plant nutrition...

10.1111/gcb.13618 article EN Global Change Biology 2017-01-09

Abstract To evaluate boreal peatland C losses from warming, novel technologies were used to expose intact bog plots in northern Minnesota a range of future temperatures (+0°C +9°C) with and without elevated CO 2 (eCO ). After 3 years, warming linearly increased net loss at rate 31.3 g C·m −2 ·year −1 ·°C . Increasing associated decomposition corroborated by measures declining peat elevation. Effects eCO minor. Results indicate peatlands 4.5 18 times faster than historical rates accumulation,...

10.1029/2020av000163 article EN cc-by AGU Advances 2020-07-27

Abstract The Tibetan Plateau, known as the world’s “Third Pole” due to its high altitude, is experiencing rapid, intense climate change, similar and even far more than that occurring in Arctic Antarctic. Scientific data sharing very important address challenges of better understanding unprecedented changes Third Pole their impacts on global environment humans. National Plateau Data Center (TPDC, http://data.tpdc.ac.cn ) one first 20 national centers endorsed by Ministry Science Technology...

10.1175/bams-d-21-0004.1 article EN cc-by-nc-nd Bulletin of the American Meteorological Society 2021-06-15

A geographically explicit terrestrial carbon cycle component of the Integrated Science Assessment Model (ISAM) is used to examine response plant and soil stocks historical changes in cropland land cover, atmospheric CO 2 , climate. The ISAM model forced with two different cover change data sets for cropland: one spatially resolved set based on statistics (Ramankutty Foley, 1998, 1999) another regionally specific deforestation rates (Houghton Hackler, 1999, 2001; Houghton, 2000, 2003). To our...

10.1029/2004gb002349 article EN Global Biogeochemical Cycles 2005-05-05

Abstract Most of the Earth System Models ( ESMs ) project increases in net primary productivity NPP and terrestrial carbon (C) storage during 21st century. Despite empirical evidence that limited availability phosphorus (P) may limit response to increasing atmospheric CO 2 , none used previous Intergovernmental Panel on Climate Change assessment accounted for P limitation. We diagnosed from ESM simulations amount need support uptake by natural ecosystems using two approaches: demand derived...

10.1002/2016ef000472 article EN cc-by-nc-nd Earth s Future 2017-04-28

Abstract Tropical forests play a crucial role in the global carbon cycle, accounting for one third of net primary productivity and containing about 25% vegetation biomass soil carbon. This is particularly true tropical Amazon region, as these comprise approximately 50% world's forests. It therefore important us to understand represent processes that determine fluxes storage In this study, we show implementation phosphorus (P) cycle P limitation version 1 Energy Exascale Earth System Model...

10.1029/2019jg005082 article EN publisher-specific-oa Journal of Geophysical Research Biogeosciences 2019-10-15

Abstract Large areas of highly productive tropical forests occur on weathered soils with low concentrations available phosphorus (P). In such forests, root and microbial production acid phosphatase enzymes capable mineralizing organic is considered vital to increasing P for plant uptake. We measured both soil throughout depth alongside a variety factors better understand the potential roots biota increase availability constrain estimates biochemical mineralization within ecosystem models....

10.1002/ece3.7036 article EN cc-by Ecology and Evolution 2021-01-19

Most Earth system models (ESMs) do not explicitly represent the carbon (C) costs of plant nutrient acquisition, which leads to uncertainty in predictions current and future constraints land C sink. We integrate a productivity-optimizing nitrogen (N) phosphorus (P) acquisition model (fixation & uptake nutrients, FUN) into energy exascale (E3SM) (ELM). Global N P are dynamically simulated by ELM-FUN based on from mycorrhizae, direct root uptake, retranslocation senescing leaves, biological...

10.1029/2022ms003204 article EN Journal of Advances in Modeling Earth Systems 2022-08-01

Open fire biomass burning and domestic biofuel (e.g., cooking, heating, charcoal making) algorithms have been incorporated into a terrestrial ecosystem model to estimate CO 2 key reactive GHGs (CO, NO x , NMHCs) emissions for the year 2000. The are calculated over globe at 0.5° × spatial resolution using tree density imagery, two separate sets of data each global area burned land clearing croplands, along with consumption rate data. estimated annual total dry matter (DM) due open ranges...

10.1029/2005jd006237 article EN Journal of Geophysical Research Atmospheres 2006-03-21

Abstract The effects of phosphorus (P) availability on carbon (C) cycling in the Amazon region are investigated using CLM‐CNP. We demonstrate that coupling P dynamics reduces simulated historical terrestrial C sink due to increasing atmospheric CO 2 concentrations ([CO ]) by about 26%. Our exploratory simulations show response tropical forest [CO ] depends how elevated affects phosphatase enzyme production. warming more complex, depending interactions between humidity, C, and nutrient...

10.1002/2016gl069241 article EN Geophysical Research Letters 2016-06-30
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