搜索结果: 1-15 共查到“地球科学总论 organic carbon”相关记录15条 . 查询时间(0.093 秒)
Comparing microbial and chemical kinetics for modelling soil organic carbon decomposition using the DecoChem v1.0 and DecoBio v1.0 models
Comparing microbial chemical kinetics modelling soil organic carbon decomposition DecoChem v1.0 DecoBio v1.0 models
2014/12/19
Soil organic matter is a vast store of carbon, with a critical role in the global carbon cycle. Despite its importance, the dynamics of soil organic carbon decomposition, under the impact of climate c...
Estimating soil organic carbon stocks of Swiss forest soils by robust external-drift kriging
Swiss forest soils robust external-drift kriging
2014/12/18
Accurate estimates of soil organic carbon (SOC)
stocks are required to quantify carbon sources and sinks
caused by land use change at national scale.
Total Organic Carbon Enrichment and Source Rock Evaluation of the Lower Miocene Rocks Based on Well Logs: October Oil Field, Gulf of Suez-Egypt
Total Organic Carbon Source Rocks Well Logs October Oil Field Gulf of Suez
2013/3/11
October oil field is one of the largest hydrocarbon-bearing fields which produces oil from the sand section of the Lower Miocene Asl Formation. Two marl (Asl Marl) and shale (Hawara Formation) section...
Pedoecological Regularities of Organic Carbon Retention in Estonian Mineral Soils
Carbon Retention Capacity Land Use
2013/3/6
Soil organic carbon (SOC) retaining capacities of epipedon (EP), subsoil (SS) and soil cover (SC) as a whole, are soil type specific. Depending on individual and sites characteristics, the generalized...
Patterns of dissolved organic carbon and nitrogen fluxes in deciduous and coniferous forests under historic high nitrogen deposition
dissolved organic carbon nitrogen fluxes deciduous and coniferous forests historic high nitrogen deposition
2010/1/21
Numerous recent studies have indicated that dissolved organic carbon (DOC) and nitrogen (DON) play an important role in C and N cycling in natural ecosystems, and have shown that N deposition alters t...
Conservation of soil organic carbon,biodiversity and the provision of other ecosystem services along climatic gradients in West Africa
Conservation soil organic carbon biodiversity ecosystem services climatic gradients
2010/1/20
Terrestrial carbon resources are major drivers of development in West Africa. The distribution of these resources co-varies with ecosystem type and rainfall along a strong Northeast-Southwest climatic...
Mercury concentrations and pools in four Sierra Nevada forest sites,and relationships to organic carbon and nitrogen
Mercury concentrations pools Sierra Nevada forest sites organic carbon nitrogen
2010/1/20
This study presents data on mercury (Hg) concentrations, stochiometric relations to carbon (C) and nitrogen (N), and Hg pool sizes in four Sierra Nevada forest sites of similar exposure and precipitat...
The significance of organic carbon and nutrient export from peatland-dominated landscapes subject to disturbance,a stoichiometric perspective
organic carbon and nutrient export peatland-dominated landscapes stoichiometric perspective
2010/1/19
The terrestrial-aquatic interface is a crucial environment in which to consider the fate of exported terrestrial carbon in the aquatic system. Here the fate of dissolved organic carbon (DOC) may be co...
Sinking rates and ballast composition of particles in the Atlantic Ocean:implications for the organic carbon fluxes to the deep ocean
Sinking rates ballast composition Atlantic Ocean organic carbon fluxes deep ocean
2010/1/19
The flux of materials to the deep sea is dominated by larger, organic-rich particles with sinking rates varying between a few meters and several hundred meters per day. Mineral ballast may regulate th...
Particulate organic carbon (POC) in relation to other pore water carbon fractions in drained and rewetted fens in Southern Germany
organic carbon pore water carbon fractions drained and rewetted fens Southern Germany
2010/1/18
Numerous studies have dealt with carbon (C) contents in Histosols, but there are no studies quantifying the relative importance of the individual C components in pore waters. For this study, measureme...
Relationships between the surface concentration of particulate organic carbon and optical properties in the eastern South Pacific and eastern Atlantic Oceans
surface concentration particulate organic carbon optical properties eastern South Pacific
2010/1/15
We have examined several approaches for estimating the surface concentration of particulate organic carbon, POC, from optical measurements of spectral remote-sensing reflectance, Rrs(λ), using field d...
Effects of climate,fire and vegetation development on Holocene changes in total organic carbon concentration in three boreal forest lakes in northern Sweden
climate fire vegetation development Holocene changes organic carbon concentration
2010/1/14
Near infrared spectroscopy (NIRS), diatoms, pollen, charcoal, loss-on-ignition (LOI), and nutrient elements in lake sediments were used to assess important factors controlling Holocene changes in the ...
Modelling carbon overconsumption and the formation of extracellular particulate organic carbon
carbon overconsumption formation extracellular particulate organic carbon
2010/1/14
During phytoplankton growth a fraction of dissolved inorganic carbon (DIC) assimilated by phytoplankton is exuded in the form of dissolved organic carbon (DOC), which can be transformed into extracell...
Minor changes in soil organic carbon and charcoal concentrations detected in a temperate deciduous forest a year after an experimental slash-and-burn
Minor changes soil organic carbon charcoal concentrations temperate deciduous forest
2010/1/14
Anthropogenic fires affected the temperate deciduous forests of Central Europe over millennia. Biomass burning releases carbon to the atmosphere and produces charcoal, which potentially contributes to...
Aggregate and soil organic carbon dynamics in South Chilean Andisols
Aggregate soil organic carbon dynamics South Chilean Andisols
2010/1/12
Extreme sensitivity of soil organic carbon (SOC) to climate and land use change warrants further research in different terrestrial ecosystems. The aim of this study was to investigate the link between...
