scholarly journals Soil organic carbon and nitrogen accumulation rates in cold and alpine environments over 1Ma

Geoderma ◽  
2012 ◽  
Vol 183-184 ◽  
pp. 109-123 ◽  
Author(s):  
Markus Egli ◽  
Filippo Favilli ◽  
Rolf Krebs ◽  
Barbara Pichler ◽  
Dennis Dahms
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Nitrogen Accumulation ◽  
Accumulation Rates ◽  
Carbon And Nitrogen ◽  
Alpine Environments

Soil Organic Carbon and Nitrogen Accumulation in Plots of Rhizoma Perennial Peanut and Bahiagrass Grown in Elevated Carbon Dioxide and Temperature

2006 ◽  
Vol 35 (4) ◽  
pp. 1405-1412 ◽  
Author(s):  
Leon Hartwell Allen ◽  
Stephan L. Albrecht ◽  
Kenneth J. Boote ◽  
Jean M. G. Thomas ◽  
Yoana C. Newman ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Elevated Carbon Dioxide ◽  
Nitrogen Accumulation ◽  
Carbon And Nitrogen

Soil Organic Carbon and Nitrogen Variations with Vegetation Succession in Passively Restored Freshwater Wetlands

Wetlands ◽  
2021 ◽  
Vol 41 (1) ◽  
Author(s):  
Yu An ◽  
Yang Gao ◽  
Xiaohui Liu ◽  
Shouzheng Tong ◽  
Bo Liu ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Vegetation Succession ◽  
Freshwater Wetlands ◽  
Carbon And Nitrogen

Long-Term Sediment, Carbon, and Nitrogen Accumulation Rates in Coastal Wetlands Impacted by Sea Level Rise

2021 ◽  
Author(s):  
Gillian Gundersen ◽  
D. Reide Corbett ◽  
Austyn Long ◽  
Melinda Martinez ◽  
Marcelo Ardón
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Coastal Wetlands ◽  
Nitrogen Accumulation ◽  
Accumulation Rates ◽  
Carbon And Nitrogen ◽  
Sediment Carbon

Soil organic carbon and nitrogen sequestration and turnover in aggregates under subtropical leucaena–grass pastures

Soil Research ◽  
2018 ◽  
Vol 56 (6) ◽  
pp. 632 ◽  
Author(s):  
Kathryn Conrad ◽  
Ram C. Dalal ◽  
Ryosuke Fujinuma ◽  
Neal W. Menzies
Keyword(s):  
Organic Matter ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Soil Aggregates ◽  
Soil Mass ◽  
Δ13c And Δ15n ◽  
Organic C ◽  
Carbon And Nitrogen ◽  
Nitrogen Sequestration ◽  
C And N

Stabilisation and protection of soil organic carbon (SOC) in macroaggregates and microaggregates represents an important mechanism for the sequestration of SOC. Legume-based grass pastures have the potential to contribute to aggregate formation and stabilisation, thereby leading to SOC sequestration. However, there is limited research on the C and N dynamics of soil organic matter (SOM) fractions in deep-rooted legume leucaena (Leucaena leucocephala)–grass pastures. We assessed the potential of leucaena to sequester carbon (C) and nitrogen (N) in soil aggregates by estimating the origin, quantity and distribution in the soil profile. We utilised a chronosequence (0–40 years) of seasonally grazed leucaena stands (3–6 m rows), which were sampled to a depth of 0.3 m at 0.1-m intervals. The soil was wet-sieved for different aggregate sizes (large macroaggregates, >2000 µm; small macroaggregates, 250–2000 µm; microaggregates, 53–250 µm; and <53 µm), including occluded particulate organic matter (oPOM) within macroaggregates (>250 µm), and then analysed for organic C, N and δ13C and δ15N. Leucaena promoted aggregation, which increased with the age of the leucaena stands, and in particular the formation of large macroaggregates compared with grass in the upper 0.2 m. Macroaggregates contained a greater SOC stock than microaggregates, principally as a function of the soil mass distribution. The oPOM-C and -N concentrations were highest in macroaggregates at all depths. The acid nonhydrolysable C and N distribution (recalcitrant SOM) provided no clear distinction in stabilisation of SOM between pastures. Leucaena- and possibly other legume-based grass pastures have potential to sequester SOC through stabilisation and protection of oPOM within macroaggregates in soil.

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