Reactive transport simulation of organic and inorganic carbon cycling following carbon dioxide sorption onto soil amendments in drylands DOI Creative Commons
Stefanie Helmrich, Alexandra J. Ringsby, Kate Maher

et al.

Frontiers in Climate, Journal Year: 2025, Volume and Issue: 7

Published: March 7, 2025

Terrestrial nature-based climate solutions (NbCS) for carbon dioxide removal (CDR) are critical mitigating change. However, the arid climates characteristic of drylands (aridity index <0.65) often limit effectiveness many NbCS. At same time, cover approximately 45% global land area and threatened by soil degradation, necessitating deployment CDR methods that also promote health. Soil amendments with high CO 2 sorption capacity, such as biochar, could provide potential health benefits in provided they do not negatively impact large inorganic pools typical dryland soils. The dynamics therefore assessing response systems to sorbing amendments. To assess sorption, we developed a 1D reactive transport model unsaturated soils equilibrium dissolved calcite under varying respiration rates amendment application conditions. simulations highlight how alteration due biochar affects carbon, pH, Ca 2+ , calcite. transient conditions emerge, including delayed emissions respired emphasize need consider times monitoring campaigns based on measurements. In scenarios where is low, drylands, becomes increasingly important. Although variable was modest relative overall deployment, impacts altered gas important developed.

Language: Английский

Soil Carbon Cannot Efficiently Accumulate in Sand‐Based River Valley DOI Open Access
Zhao Song, Jifa Cui,

Zhiping Wang

et al.

Land Degradation and Development, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 18, 2025

ABSTRACT River valley is traditionally thought a landform with efficient soil carbon accumulation, because it generally low‐lying wetter area relative to surrounding landforms. However, has been less studied in sand‐based river of arid and semi‐arid regions. This study was mainly understand the capacity accumulation Xilin Mongolia Plateau by comparing steppe sandland. We found that storage per unit sequenced > meadow sandland, which inversely associated sand fraction. Soil close mean value three landforms, without significant difference between both. wetland water body were also synthesized at weak accumulation. These results can be concluded had no predominance high‐lying Sand‐based soils are more aerated than loamy clayey soils, their organic easily decomposed. Again, composed silicate; low quantities inorganic carbons further mineralized dissolved erosion valley, respectively. Furthermore, plant productivity, climate, sediment transport, deposition cannot efficiently promote suggest overestimated evaluating

Language: Английский

Citations

0
Factors driving inorganic carbon levels in the soils of the conterminous USA DOI
Gafur GÖZÜKARA, Alfred E. Hartemink, Yakun Zhang

et al.

CATENA, Journal Year: 2025, Volume and Issue: 252, P. 108841 - 108841

Published: Feb. 20, 2025

Language: Английский

Citations

0
Incorporating aridity in soil carbon stewardship frameworks DOI
Maurizio Cotrufo, Jocelyn M. Lavallee

Nature Climate Change, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 25, 2025

Language: Английский

Citations

0
Depth-dependent effects of aggregate-associated organic, inorganic carbon, and stoichiometry on soil structural stability following farmland abandonment DOI

Zhenfeng Zang,

Liang Yu,

Shujuan Deng

et al.

CATENA, Journal Year: 2025, Volume and Issue: 252, P. 108864 - 108864

Published: March 1, 2025

Language: Английский

Citations

0
Reactive transport simulation of organic and inorganic carbon cycling following carbon dioxide sorption onto soil amendments in drylands DOI Creative Commons
Stefanie Helmrich, Alexandra J. Ringsby, Kate Maher

et al.

Frontiers in Climate, Journal Year: 2025, Volume and Issue: 7

Published: March 7, 2025

Terrestrial nature-based climate solutions (NbCS) for carbon dioxide removal (CDR) are critical mitigating change. However, the arid climates characteristic of drylands (aridity index <0.65) often limit effectiveness many NbCS. At same time, cover approximately 45% global land area and threatened by soil degradation, necessitating deployment CDR methods that also promote health. Soil amendments with high CO 2 sorption capacity, such as biochar, could provide potential health benefits in provided they do not negatively impact large inorganic pools typical dryland soils. The dynamics therefore assessing response systems to sorbing amendments. To assess sorption, we developed a 1D reactive transport model unsaturated soils equilibrium dissolved calcite under varying respiration rates amendment application conditions. simulations highlight how alteration due biochar affects carbon, pH, Ca 2+ , calcite. transient conditions emerge, including delayed emissions respired emphasize need consider times monitoring campaigns based on measurements. In scenarios where is low, drylands, becomes increasingly important. Although variable was modest relative overall deployment, impacts altered gas important developed.

Language: Английский

Citations

0