Unleashing the Sequestration Potential of Soil Organic Carbon Under Climate and Land Use Change Scenarios in Danish Agroecosystems DOI

Joan Gutierrez,

Diego Grados, Anders Bjørn Møller

и другие.

Опубликована: Янв. 1, 2023

Future global climate changes are expected to increase soil organic carbon (SOC) decomposition. However, the combined effect of C inputs, land use changes, and on SOC turnover is still unclear. Exploring this SOC-climate-land interaction allows us understand stabilization mechanisms examine whether can act as a source or sink for CO2. The current study estimates sequestration potential in topsoil layer Danish agricultural lands by 2038, considering change future scenarios using Rothamsted Carbon (RothC) model. Additionally, we quantified loss vulnerability existing projected based capacity stabilize OC. We used quantile random forest model estimate initial-SOC stock 2018, simulated with RothC business-as-usual (BAU) scenario crop rotation (LUC) under conditions 2038. compared stocks saturation deficit. initial ranged from 10 181 Mg ha-1 different parts country. projections showed 8.1 BAU 6 after LUC adoption. This was strongly influenced warmer temperatures clay content. proposed became mitigation measure against negative accumulation, especially sandy soils high livestock density. A accumulation C-saturated suggests an non-complexed SOC, which vulnerable being lost into atmosphere With these results, provide information prioritize areas where management practices be adopted enhance stable forms preserve labile-existing stocks.

Язык: Английский

Impacts of conservation agriculture on soil C and N stocks and organic matter fractions: comparing commercial producer fields with a long-term small-plot experiment in Brown Chernozems of Saskatchewan DOI
Mervin St. Luce, B.G. McConkey, J.J. Schoenau

и другие.

Canadian Journal of Soil Science, Год журнала: 2024, Номер 104(3), С. 283 - 301

Опубликована: Май 13, 2024

Conservation agriculture (CA) is increasingly promoted to build soil organic matter (SOM) based on findings from predominantly small-plot long-term agroecosystem experiments (LTAEs), with minimal on-farm data. Using commercial producer fields ( n = 20) in the Brown Chernozemic zones of Saskatchewan, Canada, which were sampled before (1996) and after (2018) adopting direct-seeding continuous cropping (1997), we examined changes carbon (SOC) total nitrogen (STN) stocks, along C N stocks particulate (POM) mineral-associated (MAOM), compared them an LTAE same zone. After 21 years, SOC STN (0–30 cm depth) increased by 13% 21%, respectively, fields, more pronounced finer- than coarser-textured soils. Conversely, there no significant 18 years (1998–2016) CA (continuous wheat pulse-wheat under no-tillage (PW-NT)) LTAE, except that stock for PW-NT decreased 7.7%. The estimated rate change 30 depth was similar between (0.28 0.16 Mg ha −1 year , respectively), but not (0.04 −0.03 respectively). Changes evident MAOM POM fraction both cases. Although impact may be similar, as observed SOC, actual will depend site-specific factors, specific practice. Therefore, monitoring studies are needed accurate assessments SOM sequestration potentials.

Язык: Английский

Процитировано

3
Long-term effects of tillage practices and future climate scenarios on topsoil organic carbon stocks in Lower Austria – a modelling and long-term experiment study DOI Creative Commons
Marton Toth,

Jess Davies,

John Quinton

и другие.

International Soil and Water Conservation Research, Год журнала: 2025, Номер unknown

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

0
Significant advances in plant-available and replenishable macro- and micronutrients with soil health-oriented conservation farming: Novel insights from a multi-site on-farm evaluation DOI Creative Commons
Christoph Rosinger, Katharina Keiblinger, Luca Giuliano Bernardini

и другие.

Geoderma, Год журнала: 2025, Номер 457, С. 117275 - 117275

Опубликована: Апрель 9, 2025

Язык: Английский

Процитировано

0
Characterization of aggregate-stabilized dissolved organic matter release - A novel approach to determine soil health advances of conservation farming systems DOI Creative Commons
Orracha Sae-Tun, Katharina Keiblinger, Christoph Rosinger

и другие.

Plant and Soil, Год журнала: 2022, Номер 488(1-2), С. 101 - 119

Опубликована: Окт. 6, 2022

Abstract Purpose Since principles of conservation agriculture mimic the soil conditions undisturbed natural soils, linking aggregation and dissolved organic matter (DOM) occlusion would therefore provide a targeted descriptor for health advances innovative farming systems. This study aimed to assess structure-related DOM patterns systems underlying bio-chemical drivers by using novel method combined analysis aggregate breakdown release. Methods Soil samples were collected from conventional farming, reference over wide range types. Ultrasonication with continuous UV–Vis measurement was used characterize release soil. Measures dynamics related physical chemical properties determine strongest predictors Results The quantity released stabilization showed steady continuum starting standard through towards soils however less complex occluded in more stable aggregates than arable soils. overall are shaped agricultural management site-specific modifiers driving mineral-organic interactions Conclusions simultaneous quantification captures key biophysical effects revealed significant differences between land-use linkage functional descriptors provides an improved approach monitor cropping

Язык: Английский

Процитировано

13
Labile not stable SOC fractions constitute the manageable drivers of soil health advances in carbon farming DOI Creative Commons

Sebastian Wieser,

Katharina Keiblinger, Axel Mentler

и другие.

Geoderma, Год журнала: 2024, Номер 449, С. 116991 - 116991

Опубликована: Авг. 14, 2024

The assessment of soil health and the determination carbon stability in soils are current challenges that have gained momentum through initiatives at national as well international scales. However, inferring universally valid parameters directly linked to permanence remains challenging. Our aim was evaluate potential simultaneous thermal analysis (STA) for an improved monitoring advances context farming strategies. For this purpose, on-farm comparison ten conservation agricultural systems with adjacent conventional farms performed based on STA measures were related key biological physical indicators functions. Using autocorrelation-based approach, we identified independent indicators, revealing efforts predominantly increased labile organic matter fractions range 300–400 °C, while thermally more recalcitrant did not respond system transformation. Similarly, most revealed highest correlation temperature ranges mass loss fractions. relation commonly used (SOC, r=0.971) total nitrogen (TN, r=0.981). also inference microbial activity such dimethylsulfoxid reduction, biomass substrate-induced respiration could be demonstrated r>0.663. results thus highlight future tasks climate change mitigation potentials health.

Язык: Английский

Процитировано

2
Interplay between living or dead plant carbon input and soil organic matter – key drivers and agricultural management for soil carbon sequestration DOI Open Access
Katharina Keiblinger, Florian Wichern, Wen‐Feng Cong

и другие.

Plant and Soil, Год журнала: 2023, Номер 488(1-2), С. 1 - 8

Опубликована: Июль 1, 2023

Язык: Английский

Процитировано

5
Sugarcane/Soybean Intercropping with Reduced Nitrogen Application Synergistically Increases Plant Carbon Fixation and Soil Organic Carbon Sequestration DOI Creative Commons

Tantan Zhang,

Yali Liu, Lin Li

и другие.

Plants, Год журнала: 2024, Номер 13(16), С. 2337 - 2337

Опубликована: Авг. 22, 2024

Sugarcane/soybean intercropping and reduced nitrogen (N) application as an important sustainable agricultural pattern can increase crop primary productivity improve soil ecological functions, thereby affecting organic carbon (SOC) input turnover. To explore the potential mechanism of sugarcane/soybean SOC sequestration, a two-factor long-term field experiment was carried out, which included planting (sugarcane monocropping (MS), 1:1 (SB1), 1:2 (SB2)) addition levels (reduced N (N1: 300 kg·hm−2) conventional (N2: 525 kg·hm−2)). The results showed that shoot root C fixation in system were significantly higher than those sugarcane during whole growth period sugarcane, level had no significant effect on plants system. also increased contents total (TOC), labile fraction [microbial biomass (MBC) dissolved (DOC)] this more obvious at N1 level. We further analyzed relationship between plant sequestration content using regression equations found both correlated with TOC, MBC, DOC content. This suggests increases amount to by improving then promotes each fraction. study indicate patterns synergistically fixation, is great significance for yields, increasing fertility, reducing greenhouse gas emissions from fields.

Язык: Английский

Процитировано

1
SOC: clay ratio: A mechanistically-sound, universal soil health indicator across ecological zones and land use categories? DOI Creative Commons
Walter W. Wenzel, Alireza Golestanifard, Olivier Duboc

и другие.

Geoderma, Год журнала: 2024, Номер 452, С. 117080 - 117080

Опубликована: Ноя. 20, 2024

Язык: Английский

Процитировано

1
Highway to health: Microbial pathways of soil organic carbon accrual in conservation farming systems DOI Creative Commons

Sabine Huber,

Christoph Rosinger, Gernot Bodner

и другие.

Geoderma, Год журнала: 2024, Номер 452, С. 117115 - 117115

Опубликована: Ноя. 22, 2024

Язык: Английский

Процитировано

1
Suitability of microbial and organic matter indicators for on‐farm soil health monitoring DOI Creative Commons
Sabine Huber, Luca Giuliano Bernardini, Alexandra Bennett

и другие.

Soil Use and Management, Год журнала: 2023, Номер 40(1)

Опубликована: Ноя. 15, 2023

Abstract In addition to standard laboratory testing of soil samples, on‐farm health monitoring methods are needed help farmers assess progress in adopting new management practices. However, there is currently a lack studies evaluating the suitability semi‐quantitative indicators accurately rank target properties according results. Therefore, this study assessed with potential for field use compared common approaches determination (i) organic carbon (SOC), (ii) (C) fractions and (iii) microbial activity. The comparison allowed evaluation validity, practicality cost‐effectiveness approaches. For purpose, three sites north‐eastern Austria contrasting textures (light, medium, heavy) two different systems (namely ‘pioneer’ ‘standard’) were selected. Pioneer soils managed long‐term principles using conservation agricultural practices while neighbouring fields under represent conventional Beyond texture site differences, both field‐adapted revealed differences between pioneer systems. Overall, management‐specific most pronounced light heavy textured soil. Although provided more accurate results less variability, field‐based still identified trends parameters system. Our can thus serve as guide selection suitable assessing areas research practical application.

Язык: Английский

Процитировано

3