Soil carbon storage, respiration potential, and organic matter quality across an age and climate gradient in southwestern Greenland

Polar Biology ◽  
2015 ◽  
Vol 39 (7) ◽  
pp. 1283-1295 ◽  
Author(s):  
Julia I. Bradley-Cook ◽  
Ross A. Virginia
Keyword(s):  
Organic Matter ◽  
Soil Carbon ◽  
Carbon Storage ◽  
Soil Carbon Storage ◽  
Organic Matter Quality ◽  
Climate Gradient

Soil carbon storage informed by particulate and mineral-associated organic matter

2019 ◽  
Vol 12 (12) ◽  
pp. 989-994 ◽  
Author(s):  
M. Francesca Cotrufo ◽  
Maria Giovanna Ranalli ◽  
Michelle L. Haddix ◽  
Johan Six ◽  
Emanuele Lugato
Keyword(s):  
Organic Matter ◽  
Soil Carbon ◽  
Carbon Storage ◽  
Soil Carbon Storage

How much more carbon can be sorbed to soil?

2020 ◽  
Author(s):  
Rose Abramoff ◽  
Katerina Georgiou ◽  
Bertrand Guenet ◽  
Margaret Torn ◽  
Yuanyuan Huang ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Carbon ◽  
Carbon Storage ◽  
Critical Role ◽  
Mean Annual Precipitation ◽  
Mean Annual Temperature ◽  
Soil Carbon Storage ◽  
Carbon Decomposition ◽  
Organic Matter Stabilization ◽  
Sorption Potential

<p>Quantifying the upper limit of stable soil carbon storage and relative saturation is essential for guiding policies designed to increase soil carbon storage, such as ‘4 per 1000’ sequestration initiative. Carbon stabilization processes are diverse, but one particular pool of carbon that is considered stable across climate zones and soil types is the mineral-associated fraction, measured using density or size fractionation. Some soil carbon decomposition models assume sorption to minerals is the main form of stabilization in this fraction. We estimate the global capacity of mineral soils in six soil orders to sorb additional dissolved organic carbon (DOC). We gathered data from 400 DOC sorption experiments representing 133 soil profiles across six soil orders. We used the relationship between DOC added and DOC sorbed to calibrate a modified Langmuir sorption equation, from which we quantified the DOC sorption potential in each soil. We found that the sorption potential is empirically related to climate variables (including mean annual temperature and mean annual precipitation) and soil geochemical variables (chiefly, percent clay, pH, and soil order). From this relationship, we then estimated the DOC sorption potential for 14631 profiles distributed globally. This amount was 1.4 (global median; 95% CI: 0.50, 2.8) kg C m<sup>-3</sup>, totaling 102 Pg C globally across six soil orders, representing up to a 7% increase in the existing total C stock. We show that there is greater capacity for additional DOC sorption in subsoils (30cm-1m) compared to top-soils (0-30cm). The gap between the modest potential of mineral sorption processes found in this study and the large total capacity of long-term organic matter stabilization (2541 Pg C for the six soil orders of this study) indicates that other mechanisms such as aggregation, the sorption of microbial necromass, layering, and co-precipitation also play a critical role in stable organic matter formation and persistence.</p>

scholarly journals Long-term nitrogen addition suppresses microbial degradation, enhances soil carbon storage, and alters the molecular composition of soil organic matter

2019 ◽  
Vol 142 (2) ◽  
pp. 299-313 ◽  
Author(s):  
Jun-Jian Wang ◽  
Richard D. Bowden ◽  
Kate Lajtha ◽  
Susan E. Washko ◽  
Sarah J. Wurzbacher ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Soil Carbon ◽  
Carbon Storage ◽  
Microbial Degradation ◽  
Nitrogen Addition ◽  
Molecular Composition ◽  
Soil Carbon Storage

Modeling Soil Carbon Storage in the “Espinal” Agroecosystem of Central Chile

2008 ◽  
Vol 22 (2) ◽  
pp. 148-158 ◽  
Author(s):  
Neal Stolpe ◽  
Cristina Muñoz ◽  
Erick Zagal ◽  
Carlos Ovalle
Keyword(s):  
Soil Carbon ◽  
Carbon Storage ◽  
Soil Carbon Storage ◽  
Central Chile

Long‐term effect of tillage and straw retention in conservation agriculture systems on soil carbon storage

2021 ◽  
Author(s):  
Beatriz Gómez‐Muñoz ◽  
Lars Stoumann Jensen ◽  
Lars Munkholm ◽  
Jørgen Eivind Olesen ◽  
Elly Møller Hansen ◽  
...  
Keyword(s):  
Soil Carbon ◽  
Carbon Storage ◽  
Conservation Agriculture ◽  
Term Effect ◽  
Soil Carbon Storage ◽  
Long Term Effect ◽  
Straw Retention ◽  
Agriculture Systems

scholarly journals Element interactions limit soil carbon storage

2006 ◽  
Vol 103 (17) ◽  
pp. 6571-6574 ◽  
Author(s):  
K.-J. van Groenigen ◽  
J. Six ◽  
B. A. Hungate ◽  
M.-A. de Graaff ◽  
N. van Breemen ◽  
...  
Keyword(s):  
Soil Carbon ◽  
Carbon Storage ◽  
Soil Carbon Storage ◽  
Element Interactions

Similar responses of soil carbon storage to drought and irrigation in terrestrial ecosystems but with contrasting mechanisms: A meta-analysis

2016 ◽  
Vol 228 ◽  
pp. 70-81 ◽  
Author(s):  
Xuhui Zhou ◽  
Lingyan Zhou ◽  
Yuanyuan Nie ◽  
Yuling Fu ◽  
Zhenggang Du ◽  
...  
Keyword(s):  
Soil Carbon ◽  
Carbon Storage ◽  
Meta Analysis ◽  
Terrestrial Ecosystems ◽  
Soil Carbon Storage
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