Well-Designed Multispecies Grassland Mixtures Enhance Both Soil C Inputs and Aboveground Productivity DOI
Esben Øster Mortensen, Diego Ábalos, Jim Rasmussen

et al.

Published: Jan. 1, 2024

Language: Английский

A legume-grass cover crop builds mineral-associated organic matter across variable agricultural soils DOI
R. Kent Connell, Timothy Y. James, Jennifer Blesh

et al.

Soil Biology and Biochemistry, Journal Year: 2025, Volume and Issue: unknown, P. 109726 - 109726

Published: Jan. 1, 2025

Language: Английский

Citations

2
Well-designed multi-species grassland mixtures enhance both soil carbon inputs and aboveground productivity DOI Creative Commons
Esben Øster Mortensen, Diego Ábalos, Jim Rasmussen

et al.

Agriculture Ecosystems & Environment, Journal Year: 2025, Volume and Issue: 385, P. 109578 - 109578

Published: Feb. 27, 2025

Language: Английский

Citations

2
Cover crop root morphology rather than quality controls the fate of root and rhizodeposition C into distinct soil C pools DOI Creative Commons
Tine Engedal, Jakob Magid, Veronika Hansen

et al.

Global Change Biology, Journal Year: 2023, Volume and Issue: 29(19), P. 5677 - 5690

Published: July 31, 2023

Abstract Cover crops increase carbon (C) inputs to agricultural soils, and thus have the potential mitigate climate change through enhanced soil organic (SOC) storage. However, few studies explored fate of belowground C associated with varying root traits into distinct SOC pools mineral‐associated (MAOC) particulate (POC). Therefore, a packed 0.5 m column trial was established 0.25 topsoil subsoil four cover species (winter rye, oilseed radish, chicory, hairy vetch) known differ in C:N ratio morphology. were 14 CO 2 ‐labeled for 3 months, then, half columns sampled quantify rhizodeposition C. In remaining columns, plant shoots harvested undisturbed roots left incubation. Bulk from both sampling times subjected simple fractionation scheme, where <50 >50 μm fraction assumed represent MAOC POC, respectively. The fast‐growing rye radish produced highest percentage loss via (%ClvR) showed pattern, 22% more branched (rye 6%–8% less (radish chicory). This suggests that morphology plays key role determining After 1 year incubation at room temperature, POC positively correlated absolute terms. formation efficiencies (cover crop‐derived as share inputs) higher vetch (21% 15%, respectively) than chicory (9% 10%, respectively), suggesting greater importance (or indirectly, morphology) solely substrate longer term stabilization.

Language: Английский

Citations

23
Cover crops affect pool specific soil organic carbon in cropland – A meta‐analysis DOI Creative Commons
Julia Fohrafellner, Katharina Keiblinger,

Sophie Zechmeister‐Boltenstern

et al.

European Journal of Soil Science, Journal Year: 2024, Volume and Issue: 75(2)

Published: March 1, 2024

Abstract Cover crops (CC) offer numerous benefits to agroecosystems, particularly in the realm of soil organic carbon (SOC) accrual and loss mitigation. However, uncertainties persist regarding extent which CCs, co‐occurrence with environmental factors, influence SOC responses associated C pools. We therefore performed a weighted meta‐analysis on effects CCs mineral‐associated (MAOC), particulate (POC) microbial biomass (MBC) pool compared no CC cultivation arable cropland. Our study summarized global research comparable management, focus climatic zones representative Europe, such as arid, temperate boreal climates. In this meta‐analysis, we included 71 independent studies from 61 articles published between 1990 June 2023 several scientific grey literature databases. Sensitivity analysis was conducted did not identify any significant publication bias. The results revealed that had an overall statistically positive effect pools, increasing MAOC by 4.8% (95% CI: 0.6%–9.4%, n = 16), POC 23.2% 13.9%–34.4%, 39) MBC 20.2% 11.7%–30.7%, 30) top soil, cultivation. Thereby, feed into stable well more labile dependent clay content initial concentration, whereas influenced moderators peak experiment duration. For MBC, for example, content, crop rotation duration tillage depth were identified important drivers. Based our pools moderators, needs. A pressing need additional experiments exploring found, particular POC. Further, emphasize necessity conducting European spanning north–south gradient. conclusion, show is key strategy promote different Additionally, provides new insights state knowledge changes offering quantitative summary shedding light sources heterogeneity affecting these findings.

Language: Английский

Citations

11
Unprotected carbon dominates decadal soil carbon increase DOI Creative Commons
Minglong Liu, Shilu Zheng, Elise Pendall

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Feb. 27, 2025

Language: Английский

Citations

1
Smart Mixture Design Can Steer the Fate of Root‐Derived Carbon Into Mineral‐Associated and Particulate Organic Matter in Intensively Managed Grasslands DOI Creative Commons
Esben Øster Mortensen, Diego Ábalos, Tine Engedal

et al.

Global Change Biology, Journal Year: 2025, Volume and Issue: 31(3)

Published: March 1, 2025

Species choice and richness in intensively managed grassland mixtures regulate soil carbon (C) input via rhizodeposition, with potential consequences for long-term organic storage. Based on a field trial different grass-legume-forb mixtures, we removed roots from the soil, which was then subjected to particle-size fractionation trace fresh (net C rhizodeposition) into particulate matter (POM) mineral-associated (MAOM). We related these fractions root traits. Using multiple-pulse 13C-CO2-labeling, captured net formation of (MAOC) (POC) at end growing season. Pure stand perennial ryegrass (Lolium perenne) had higher quantities rhizodeposited allocated MAOC POC (0.21 0.13 g kg-1 dry respectively) compared (ranging 0.10 0.12 0.05 0.06 POC). However, proportion (%MAOC relation that legumes. did not affect quantity or POC, nor %MAOC. The were positively associated length. In contrast, %MAOC diameter lower C:N ratio. Despite legumes, main driver total amount rhizodeposition. These results highlight importance legumes rhizodeposition high length increasing both quantities. Our study shows how plant community design can be used increase and/or facilitate By revealing traits behind relationships between communities formation, provide guide species selection grasslands mitigate climate change.

Language: Английский

Citations

1
Cover crop cultivation strategies in a Scandinavian context for climate change mitigation and biogas production – Insights from a life cycle perspective DOI Creative Commons
Johan Nilsson,

Maria Ernfors,

Thomas Prade

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 918, P. 170629 - 170629

Published: Feb. 4, 2024

Cover crop cultivation can be a vital strategy for mitigating climate change in agriculture, by increasing soil carbon stocks and resource efficiency within the cropping system. Another mitigation option is to harvest cover use biomass replace greenhouse gas-intensive products, such as fossil fuels. Harvesting could also reduce risk of elevated N

Language: Английский

Citations

4
Using visible-near infrared spectroscopy to estimate whole-profile soil organic carbon and its fractions DOI Creative Commons

Mingxuan Qi,

Songchao Chen, Yu‐Chen Wei

et al.

Soil & Environmental Health, Journal Year: 2024, Volume and Issue: 2(3), P. 100100 - 100100

Published: July 18, 2024

Soil organic carbon (SOC) is crucial for soil health and quality, its sequestration has been suggested as a natural solution to climate change. Accurate cost-efficient determination of SOC functional fractions essential effective management. Visible near-infrared spectroscopy (vis-NIR) emerged approach. However, ability predict whole-profile content rarely assessed. Here, we measured two fractions, particulate (POC) mineral-associated (MAOC), down depth 200 ​cm in seven sequential layers across 183 dryland cropping fields northwest, southwest, south China. Then, vis-NIR spectra the samples were collected train machine learning model (partial least squares regression) SOC, POC, MAOC, ratio MAOC (MAOC/SOC – an index vulnerability). We found that accuracy indicated by coefficient validation (Rval2) 0.39, 0.30, 0.49, 0.48 MAOC/SOC, respectively. Incorporating mean annual temperature improved performance, Rval2 was increased 0.64, 0.31, 0.63, 0.51 four variables, Further incorporating into 0.82, 0.59, These results suggest combining with readily-available data total measurements enables fast accurate estimation POC diverse environmental conditions, facilitating reliable prediction dynamics over large spatial extents.

Language: Английский

Citations

4
Rhizodeposition stimulates soil carbon decomposition and promotes formation of mineral-associated carbon with increased clay content DOI Creative Commons
Md. Rumainul Islam, Bahareh Bicharanloo, Xing Yu

et al.

Geoderma, Journal Year: 2025, Volume and Issue: 454, P. 117180 - 117180

Published: Jan. 27, 2025

Language: Английский

Citations

0
Differences in the physical protection mechanisms of soil organic carbon with 13C-labeled straw and biochar DOI Creative Commons
Caidi Yang,

Yuexin Chang,

Jingjing Liu

et al.

Biochar, Journal Year: 2025, Volume and Issue: 7(1)

Published: Feb. 12, 2025

Language: Английский

Citations

0