搜索结果: 1-15 共查到“地球科学总论 Organic Matter”相关记录17条 . 查询时间(0.365 秒)
Long residence times of rapidly decomposable soil organic matter: application of a multi-phase, multi-component, and vertically resolved model (BAMS1) to soil carbon dynamics
Long residence times rapidly decomposable soil organic matter multi-phase multi-component vertically resolved model soil carbon dynamics
2014/12/19
Accurate representation of soil organic matter (SOM) dynamics in Earth system models is critical for future climate prediction, yet large uncertainties exist regarding how, and to what extent, the sui...
Inversion And Analysis Of Chromophoric Dissolved Organic Matter In Estuarine And Coastal Regions Using Hyperspectral Remote Sensing
Earth sciences Chromophoric dissolved organic matter Climate change Inversion Ocean color Remote sensing Estuaries
2014/10/22
CDOM (chromophoric dissolved organic matter) plays an important role in determining underwater light field and aquatic photochemical and biological processes. Knowing CDOM properties, origin, sink, co...
Dissolved Organic Matter-Complexed Iron in Two Rivers with Different Types of Soils in Watershed Area
Dissolved Organic Matter (DOM) Dissolved Humic Substances (DHS)
2013/3/11
Concentrations of dissolved organic matter (DOM), dissolved humic substances (DHS), and DOM-complexed Fe (DOM-Fe) in Yamakuni and Oita Rivers, Japan, of which headstream is near in location, flow pass...
Measuring and modeling continuous quality distributions of soil organic matter
continuous quality distributions soil organic matter
2010/1/21
An understanding of the dynamics of soil organic matter (SOM) is important for our ability to develop management practices that preserve soil quality and sequester carbon. Most SOM decomposition model...
Measuring and modeling continuous quality distributions of soil organic matter
Measuring modeling continuous quality distributions soil organic matter
2010/1/7
An understanding of the dynamics of soil organic matter (SOM) is important for our ability to develop management practices that preserve soil quality and sequester carbon. Most SOM decomposition model...
Organic matter sedimentation in the western Barents Sea region:Terrestrial and marine contribution based on isotopic composition and organic nitrogen content
Organic matter sedimentation western Barents Sea region Terrestrial and marine contribution
2009/12/2
Here, we present bulk organic geochemical data from a spatial grid of surface samples from the western Barents Sea region. The results show that the distribution of organic carbon in surface sediments...
Nitrous oxide production in boreal soils with variable organic matter content at low temperature – snow manipulation experiment
Nitrous oxide production boreal soils organic matter content low temperature
2010/1/21
Agricultural soils are the most important sources for the greenhouse gas nitrous oxide (N2O), which is produced and emitted from soils also at low temperatures. The processes behind emissions at low t...
Evidence for surface organic matter modulation of air-sea CO2 gas exchange
Evidence surface organic matter modulation air-sea CO2 gas exchange
2010/1/20
Air-sea CO2 exchange depends on the air-sea CO2 gradient and the gas transfer velocity (k), computed as a function of wind speed. Large discrepancies among relationships predicting k from wind suggest...
Paleovegetation reconstruction using δ13C of Soil Organic Matter
Paleovegetation reconstruction δ13C Soil Organic Matter
2010/1/18
The relative contributions of C3 and C4 plants to vegetation at a given locality may be estimated by means of δ13C of soil organic matter. This approach holds a great potential for paleoecological rec...
Build-up and decline of organic matter during PeECE III
Build-up decline organic matter PeECE III
2010/1/15
Increasing atmospheric carbon dioxide (CO2) concentrations due to anthropogenic fossil fuel combustion are currently changing the ocean's chemistry. Increasing oceanic [CO2] and consequently decreasin...
Distribution of inorganic and organic nutrients in the South Pacific Ocean − evidence for long-term accumulation of organic matter in nitrogen-depleted waters
inorganic and organic nutrients South Pacific Ocean − evidence long-term accumulation
2010/1/15
During the BIOSOPE cruise the RV Atalante was dedicated to study the biogeochemical properties in the South Pacific between the Marquesas Islands (141° W–8° S) and the Chilean upwelling (73° W–34° S)....
On the treatment of particulate organic matter sinking in large-scale models of marine biogeochemical cycles
treatment particulate organic matter large-scale models marine biogeochemical cycles
2010/1/15
Various functions have been suggested and applied to represent the sedimentation and remineralisation of particulate organic matter (POM) in numerical ocean models. Here we investigate some representa...
Thermal stability responses of soil organic matter to long-term fertilization practices
Thermal stability responses soil organic matter long-term fertilization practices
2010/1/13
We used differential scanning calorimetry (DSC) to infer thermal properties of soil organic matter (SOM) in the static fertilization experiment in Bad Lauchstädt, Germany, which has been establis...
Is resistant soil organic matter more sensitive to temperature than the labile organic matter?
resistant soil organic temperature labile organic matter
2010/1/13
A recent paper by Knorr et al. (2005a) suggested that the decomposition of resistant soil organic matter is more temperature sensitive than labile organic matter. In Knorr et al.'s (2005a) model, the ...
Halogens in pore water of peat bogs – the role of peat decomposition and dissolved organic matter
Halogens pore water peat bogs peat decomposition dissolved organic matter
2010/1/13
Halogens are strongly enriched in peat and peatlands and such they are one of their largest active terrestrial reservoir. The enrichment of halogens in peat is mainly attributed to the formation of or...