نتایج جستجو برای: carbon and nitrogen mineralization potentials

تعداد نتایج: 16919291  

Journal: :Journal of Environmental Management 2021

Effective solutions for efficient carbon dioxide (CO2) capture in air at room temperature are high demand due to the major impacts CO2 has on global climatic changes. Solid adsorbents materials received great attention over past years, among them, magnesium-based sorbents have been identified as a promising solution intermediate temperatures. This study reports first time (1) synthesis of monoc...

2010
Y. P. Wang

Carbon storage by many terrestrial ecosystems can be limited by nutrients, predominantly nitrogen (N) and phosphorus (P), in addition to other environmental constraints, water, light and temperature. However the spatial distribution and the extent of both N and P limitation at the global scale have not been quantified. Here we have developed a global model of carbon (C), nitrogen (N) and phosph...

2001
Manon Croft Line Rochefort Chantal J. Beauchamp

Knowledge concerning the microbial characteristics of natural and post-vacuum extracted ombrotrophic peatlands, as well as peatlands under restoration is limited. In one experiment, microbial comparisons of paired neighboring natural and post-vacuum peatlands in eastern Québec (Canada) were studied to assess the effects of peat mining on microbial indicators and nitrogen (N) cycling. Microbial ...

Journal: :Journal of environmental quality 2012
Ann-Marie Fortuna C Wayne Honeycutt George Vandemark Timothy S Griffin Robert P Larkin Zhongqi He Brian J Wienhold Karamat R Sistani Stephan L Albrecht Bryan L Woodbury Henry A Torbert J Mark Powell Robert K Hubbard Roger A Eigenberg Robert J Wright J Richard Alldredge James B Harsh

Soil biotic and abiotic factors strongly influence nitrogen (N) availability and increases in nitrification rates associated with the application of manure. In this study, we examine the effects of edaphic properties and a dairy (Bos taurus) slurry amendment on N availability, nitrification rates and nitrifier communities. Soils of variable texture and clay mineralogy were collected from six US...

Journal: :Global change biology 2017
Ensheng Weng Caroline E Farrior Ray Dybzinski Stephen W Pacala

Earth system models are incorporating plant trait diversity into their land components to better predict vegetation dynamics in a changing climate. However, extant plant trait distributions will not allow extrapolations to novel community assemblages in future climates, which will require a mechanistic understanding of the trade-offs that determine trait diversity. In this study, we show how ph...

2009

The interaction between disturbance and climate change and resultant effects on ecosystem carbon (C) and nitrogen (N) fluxes are poorly understood. Here, we model (using CENTURY version 4.5) how climate change may affect C and N fluxes among mature and regenerating lodgepole pine (Pinus contorta var. latifolia Engelm. ex S. Wats.) stands that vary in postfire tree density following stand-replac...

2007
Cengiz DARICI

Glyphosate isopropylamine and trifluralin are herbicides widely used in Turkish agriculture. The recommended field dose (RFD) (480 g of active ingredient l for both glyphosate and trifluralin) and 2 × RFD of these herbicides were added to the soil of olive trees (Olea europaea L., Oleaceae) growing on the Çukurova University Campus (Adana) under Mediterranean climate conditions in order to dete...

Interatomic potentials, which describe interactions between elements of nanosystems, are crucial in theoretical study of their physical properties. We focus on two well known empirical potentials, i.e. Tersoff's and Brenner's potentials, and compare their performance in calculation of thermal transport in carbon nanotubes. In this way, we study the temperature and diameter dependence of thermal...

2007
J. S. King K. S. Pregitzer D. R. Zak M. E. Kubiske

Rising atmospheric carbon dioxide has the potential to alter leaf litter chemistry, potentially affecting decomposition and rates of carbon and nitrogen cycling in forest ecosystems. This study was conducted to determine whether growth under elevated atmospheric CO2 altered the quality and microbial decomposition of leaf litter of a widely distributed northern hardwood species at sites of low a...

2009
Ena Smidt Johannes Tintner Katharina Meissl Erwin Binner

Composts play an important role in the context of resource recovery and soil improvement by increasing soil organic matter. This study focuses on compost quality in terms of humic acid (HA) content which due to its favorable properties provides benefits for soils and plants. A series of Austrian and foreign composts (174 samples) were investigated to find out the level of HAs built up during co...

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