A5014054001- Soil Carbon and Nitrogen Dynamics
- Soil and Water Nutrient Dynamics
- Peatlands and Wetlands Ecology
- Microbial Community Ecology and Physiology
- Atmospheric and Environmental Gas Dynamics
- Heavy metals in environment
- Soil erosion and sediment transport
- Plant Water Relations and Carbon Dynamics
- Ecology and Vegetation Dynamics Studies
- Phosphorus and nutrient management
- Humic Substances and Bio-Organic Studies
- Iron oxide chemistry and applications
- CO2 Sequestration and Geologic Interactions
- Isotope Analysis in Ecology
- Clay minerals and soil interactions
- Ecosystem dynamics and resilience
- Species Distribution and Climate Change
- Soil Geostatistics and Mapping
- Plant Ecology and Soil Science
- Crop Yield and Soil Fertility
- ZnO doping and properties
- Environmental and Agricultural Sciences
- Land Use and Ecosystem Services
- Forest Ecology and Biodiversity Studies
- Radioactive element chemistry and processing
University of Florida
2020-2025
University of California, Berkeley
2015-2023
China West Normal University
2021
Zhejiang University
2021
Anhui Agricultural University
2020
Sichuan Agricultural University
2016-2019
University of California, Santa Barbara
2013-2018
Sichuan Academy of Forestry
2017-2018
University of California System
2015
University of Chinese Academy of Sciences
2013
Oscillating redox conditions are a common feature of humid tropical forest soils, driven by an ample supply and dynamics reductants, high moisture, microbial oxygen consumption, finely textured clays that limit diffusion. However, the net result variable soil regimes on iron (Fe) mineral associated carbon (C) forms fluxes is poorly understood in soils. Using 44-day incubation experiment with soils from Puerto Rico, we examined patterns Fe C transformations under four regimes: static anoxic,...
Abstract Traditional models of decomposition fail to capture litter mass loss patterns in dryland systems. This shortcoming has stimulated research into alternative drivers decomposition, including photodegradation. Here, we use aboveground data for (arid) sites from the Long‐term Intersite Decomposition Experiment Team set test hypotheses (models) about mechanisms and impacts Incorporating photodegradation a traditional biotic model substantially improved predictions at these sites,...
To better understand the impact of converting native forests to intensively managed plantations on soil carbon (C) and nitrogen (N) dynamics in subtropical China, we examined seasonal patterns water-soluble organic C (WSOC) N (WSON) concentrations soils Chinese chestnut (Castanea mollissima Blume) (CF) bamboo (Phyllostachys praecox C.D. Chu & C.S. Chou) plantation (BF) adjacent evergreen broadleaf (NF) Ling-long Mountain, Zhejiang Province, China. The were disturbed through surface...
ABSTRACT Fast‐growing tree species are widely used as pioneers for reforestation. These plantations strongly affect the ecosystem productivity and nutrient cycling, whereas their effect on soil microbial community is still unclear. In a reforestation chronosequence in subtropical China consisting of Eucalyptus plantation with ages 1, 2, 4 or 5 years, we examined response its function. The results showed that bulk density dissolved organic carbon decreased significantly along chronosequence....
Humid tropical forests are among the most productive ecosystems globally, yet they often occur on soils with high phosphorus (P) sorption capacity, lowering P availability to biota. Short-term anoxic events thought release sorbed and enhance its acquisition by soil microbes. However, actual effects of conditions microbial in humid forest surprisingly poorly studied. We used laboratory incubations bulk soils, NanoSIMS analysis single cells, landscape-scale measurements Luquillo Experimental...
Soil organic matter (SOM) stands out as one of the foremost indicators soil health. Soils with high SOM concentrations have been shown to be associated crop yield under drought conditions. However, a critical question remains unanswered: is yield-stabilizing effect attributable inherent properties, which remain unresponsive agricultural management practices, such texture and taxonomy? Or it driven by dynamic properties that reflect overall health soil? Following Health Assessment Protocol...
The opportunity of agricultural management practices to sequester soil organic carbon (SOC) is recognized as an important strategy for mitigating climate change. However, there low confidence when it comes understanding the magnitude benefit we can expect from SOC sequestration or how best achieve it. Several issues are often confounded mitigation potential and greenhouse gas (GHG) reductions agriculture, creating confusion making difficult clearly identify knowns, unknowns risks...
Abstract Cover crops have been widely adopted to improve soil functions in agroecosystems, including providing carbon (C) inputs that can contribute C sequestration. However, changes may be slow after introducing cover unfavorable environments for organic matter (SOM) accumulation, like the Southeast United States subtropical region characterized by a warm humid climate, and coarse‐textured soils. We examined labile pools as potential early indicators of SOM crop introduction sandy vegetable...
Responses of grassland carbon (C) cycling to climate change and land use remain a major uncertainty in model prediction future climate. To explore the impacts global on ecosystem C fluxes consequent changes storage, we have conducted field experiment with warming (+3 °C), altered precipitation (doubled halved), annual clipping at end growing seasons mixed-grass prairie Oklahoma, USA, from 2009 2013. Results showed that although respiration (ER) gross primary production (GPP) negatively...
Abstract Phosphorus (P) is a key limiting nutrient in highly weathered soils of humid tropical forests. A large proportion P these bound to redox‐sensitive iron (Fe) minerals; however, little known about how Fe redox interactions affect soil cycling. In an incubation experiment, we changed bulk regimes by varying headspace conditions (air versus N 2 gas) and examined the responses species two fluctuating treatments (4‐ or 8‐day oxic followed 4‐day anoxic) static (oxic anoxic). anoxic...
Ti1−xCoxO2 polycrystalline films have been prepared on Si(0 0 1) substrates by the plasma enhanced chemical vapour deposition technique at 280 °C without using any carrier gas. All show room-temperature ferromagnetic behaviours and no clusters are detected x-ray diffraction, photoelectron spectroscopy, atomic force microscopy, Raman superconducting quantum interference device measurements as doping concentration is lower than 4%. In addition, formation of non-ferromagnetic CoTiO3 under heavy...
Abstract It is a critical time to reflect on the National Ecological Observatory Network (NEON) science date as well envision what research can be done right now with NEON (and other) data and training needed enable diverse user community. became fully operational in May 2019 has pivoted from planning construction operation maintenance. In this overview, history of foundational thinking around are discussed. A framework open described discussion how situated part larger constellation—across...
An elegant new species of Fagaceae, Lithocarpus graniticus S. P. Chen & Y. Z. Lin, was discovered in the valley a granite mountain southern Fujian, China. The is most similar to L. cucullatus C. Huang T. Chang having grayish-white waxy scales on abaxial leaf surfaces, cupules enclosing more than 1/2 nut, and seed scar convex ca. 1/3 nut. It distinguished by its cupular cupule, relatively densely pilose inflorescences, ovate or ovate-elliptic leaves, sparsely indument branches surfaces...