Results 91 to 100 of about 1,566,668 (214)

Agricultural influences on carbon emissions and sequestration [PDF]

open access: yes, 2002
This report was presented at the UK Organic Research 2002 Conference. Agricultural systems contribute to carbon emissions through several mechanisms: the direct use of fossil fuels in farm operations, the indirect use of embodied energy in inputs that ...
Ball, Andrew S, Pretty, Jules N
core  

Biomarker analysis revealed tidal organic carbon input enhanced soil respiration and weakened carbon sequestration function of estuarine wetland: Field validation of the Jiuduansha Wetland in the Yangtze River estuary

open access: yesGeoderma
In estuarine wetlands, tidal water is an important source of organic carbon input besides plants. However, it remains unclear whether tidal organic carbon input can affect soil organic carbon turnover processes in estuarine wetlands, especially soil ...
Haoyu Dong   +5 more
doaj   +1 more source

Evaluating the two-pool decay model for biochar carbon permanence

open access: yesBiochar
Accurate estimation of biochar carbon permanence is essential for assessing its effectiveness as a carbon dioxide removal (CDR) strategy. The widely adopted framework, based on the two-pool carbon exponential decay model, forms the basis of policy ...
Hamed Sanei   +3 more
doaj   +1 more source

Storing carbon in soil. Can we slow a revolving door? [PDF]

open access: yes, 2012
There is no doubt that soils are a vast store of carbon and partially control the carbon dioxide content of the atmosphere. Maintaining soil organic matter is also crucial for production and environmental protection.
Schipper, Louis A.
core   +1 more source

Empirical LCAO parameters for $\pi$ molecular orbitals in planar organic molecules

open access: yes, 2008
We present a parametrization within a simplified LCAO model (a type of Hueckel model) for the description of $\pi$ molecular orbitals in organic molecules containing $\pi$-bonds between carbon, nitrogen, or oxygen atoms with $sp^2$ hybridization, which ...
Hawke, Laurence   +2 more
core   +3 more sources

Review of existing information on the interrelations between soil and climate change. (ClimSoil). Final report [PDF]

open access: yes, 2008
Carbon stock in EU soils – The soil carbon stocks in the EU27 are around 75 billion tonnes of carbon (C); of this stock around 50% is located in Sweden, Finland and the United Kingdom (because of the vast area of peatlands in these countries) and ...
Alm, Jukka   +16 more
core  

Comparing the linkages between carbon components and soil aggregates in vegetable fields to continuous input of different carbon sources.

open access: yesPLoS ONE
AimsTo address the issue of declining soil organic carbon (SOC) in vegetable fields, this study investigated the effects of continuous input of different carbon sources on soil carbon pool dynamics.MethodsA five-year field plot experiment was conducted ...
Yuan Yang Peng   +5 more
doaj   +1 more source

Soil organic carbon, carbon fractions, and microbial community under various organic amendments

open access: yesScientific Reports
The impact of various organic amendments on soil organic carbon (SOC) have rarely been reported. To address this, a laboratory experiment was designed to scrutinize the effects of different amendments on soil carbon fractions, microbial communities, and the underlying interactive mechanisms.
Baojian Wu   +6 more
openaire   +3 more sources

Empirical Analysis of Land-use Change and Soil Carbon Sequestration Cost in China [PDF]

open access: yes
This project examines the driving forces behind the land-use change and evaluates the effects of land-use transition on soil organic carbon density and sequestration cost in China. It contributes to the literature in three aspects.
Deng, Xiangzheng, Li, Man, Wu, JunJie
core   +1 more source

Blue organic long-persistent luminescence via upconversion from charge-transfer to locally excited singlet state

open access: yesNature Communications
Long-persistent luminescence (LPL) materials have applications from safety signage to bioimaging; however, existing organic LPL (OLPL) systems do not align with human scotopic vision, which is sensitive to blue light.
Zesen Lin   +17 more
doaj   +1 more source

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