Soil organic carbon saturation in cropland-grassland systems: Storage potential and soil quality

Guillaume, Thomas; Makowski, David; Libohova, Zamir; Bragazza, Luca; Sallaku, Fatbardh; Sinaj, Sokrat

doi:10.1016/j.geoderma.2021.115529

Cited by 50 publications

(13 citation statements)

References 61 publications

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“…As the core of soil fertility, soil organic carbon is inextricably linked to the material cycle and energy flow in the soil. DOC is an active part of organic carbon, which is fast, less stable, and easily oxidized (Kaiser and Kalbitz, 2012;Guillaume et al, 2022;. Biochar and vermicompost can effectively increase the organic matter content of the soil Bi et al, 2021), which accounts for less than 10% of soil's solid phase composition but plays a critical role in driving microbial activity and promoting mineral transformation.…”

Section: Figurementioning

confidence: 99%

Effects of biochar and vermicompost on microorganisms and enzymatic activities in greenhouse soil

Zhang

Liu

et al. 2023

Front. Environ. Sci.

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The effects of different contents of biochar and vermicompost on the microbial and enzymatic activities of greenhouse soil were determined to provide a theoretical basis for improving the quality of greenhouse soil. The experiment was conducted in a greenhouse using potted tomatoes. Five treatments consisted of different amount ratios of organic amendments: 1% biochar (BC1), 3% biochar (BC3), 5% biochar (BC5), 3% vermicompost (VC3), and 5% vermicompost (VC5), with no addition of organic amendments as the control (CK). Compared with CK, the pH, organic matter content, and DOC concentration increased in treatment groups. The organic matter content of BC3 and BC5 significantly increased by 54.6% and 72.8%, respectively, and DOC concentration of BC3 significantly increased by 43.9%. Biochar and vermicompost significantly increased the diversity of bacterial and fungal communities in soil, as well as the abundance of Actinomycetes, Acidobacteria, Ascomycetes, and Aspergillus, and reduced the abundance of Aspergillus. The activities of urease and alkaline phosphatase were significantly increased, and the activity of nitrate reductase was inhibited in all treatment groups compared with CK. In addition, a highly significant positive correlation was observed among pH, Acidobacteria phylum abundance, and alkaline phosphatase activity in all treatments. DOC concentration was positively correlated with pH, organic matter content, Acidobacteria phylum abundance and alkaline phosphatase activity. Biochar and vermicompost were effective in improving the physicochemical properties of greenhouse soil, enhancing microbial diversity, and affecting enzymatic activities. Therefore, BC3 (3% biochar) had the most significant effect on community diversity and alkaline phosphatase and nitrate reductase activities. VC5 (5% vermicompost) had the best promotion effect on urease activity. This study highlights that biochar and vermicompost as organic amendments are recommended to improve the quality of greenhouse soils.

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Section: Figurementioning

confidence: 99%

Effects of biochar and vermicompost on microorganisms and enzymatic activities in greenhouse soil

Zhang

Liu

et al. 2023

Front. Environ. Sci.

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“…The process of soil aggregation, nutrient supply, and macro-aggregate stabilization can control carbon enrichment from the loss of soil mass due to erosion and transformation. The input of organic matter through the return of organic biomass can quickly stimulate the formation of soil humus colloidal particles that can protect physically, chemically, and biologically faster decomposition rate for better soil quality [56].…”

Section: 4correlation Between Carbon Biomass and Soil Carbonmentioning

confidence: 99%

Comparison of carbon content in soil and biomass in various types of sub-optimal dryland use in Aceh Besar, Indonesia

Sufardi

Syafruddin

Arabia

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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This study was conducted to compare the content of carbon in soil and in biomass vegetation in various types of sub-optimal dryland in Aceh Besar district, Indonesia. Soil samples were collected from seven soil depths from 0 to 100 cm under 12 land uses including primary forest, secondary forest, pine forest, Eucalyptus forests, teak forest, forest shrubs, shrublands, and grasslands, mixed gardens, moorlands, rainfed rice fields, and bare lands. The measurement of plant biomass is differentiated according to the type of vegetation based on the BSN (2020) procedure [1]. The biomass of vegetations used allometric equations. The results of the study showed that the C content of the soil at a depth of 0-30 cm was higher than the C content at 30-100 cm. Carbon soil potential at the depth of 0-100 cm and biomass carbon contents in the sub-optimal dryland of Aceh Besar varies greatly between land-use types. The primary forest has the highest potential for soil carbon and biomass carbon compared to other land-use types. Soil and biomass C potentials in the primary forest were 332.28 ± 28.75 t ha-1 and 241.71 ± 24.46 t ha-1 (70.4%), respectively, with soil C stock of 25,103.68 Gg. The lowest soil C potential was found in bare land, namely 57.54±5.87 t ha-1 with a biomass C potential of 0.53 ±0.06 t ha-1, while the lowest soil C stock was found in the teak forest, which was 4.83 Gg. There is a positive correlation between soil C stock and biomass C content. The ratio of soil C and biomass C in the sub-optimal dryland of Aceh Besar varied from 0.01 to 1.57.

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“…SOC and soil health are closely related and their depletion often happens concurrently (Lal, 2004). It is expectd that SOC stocks vary between associated management practices, for example, higher SOC stocks on fields with livestock integration and no-till (Guillaume et al, 2022). Singh et al (2018) summarize a range of studies that found positive effects on SOC storage and soil quality under no-till, addition of organic amendments, higher crop diversity, and light to moderate grazing in crop-livestock farming.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The potential of regenerative agriculture to improve soil health on Gotland, Sweden

Daverkosen

Holzknecht

Friedel

et al. 2022

J. Plant Nutr. Soil Sci.

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Background: Regenerative agriculture has gained attention in mainstream media, academic literature, and international politics in recent years. While many practices and outcomes relate to RA, there is no uniform definition of the term, and only a few comprehensive scientific studies exist of "real-life" farms and the complexity of what is considered regenerative management and its impact on soil health. Aims:This study aimed to relate the impact of single and various combinations of regenerative management practices to soil health indicators on Gotland, Sweden.Methods: Soil health of 17 farm fields and six gardens was assessed on 11 farms that had applied regenerative agricultural practices for zero to 30 years. We measured a variety of physical (bulk density , infiltration rate, wet aggregate stability, root depth and abundance, penetration resistance), chemical (pH, electric conductivity, C:N ratio, total organic carbon ) and biological (earthworm abundance, active carbon, microbial biomass carbon) soil indicators. These parameters were related to regenerative practices (reduced tillage, application of organic matter , livestock integration, crop diversity, and share of legumes and perennials) through a combination of hierarchical clustering, Analysis of Variance and Tukey's tests, principal component analysis, and multiple linear regressions.Results: At our study sites, the application of organic matter had a positive impact on bulk density, carbon-related parameters, wet aggregate stability, and infiltration rate, while reduced tillage and increased share of perennials combined had a positive impact on vegetation density, root abundance and depth, and wet aggregate stability. The field plots were divided into four clusters according to their management, and we found significantly higher values of total organic carbon (*), C:N (*), infiltration rate (**), and earthworm abundance (*) for crop-high-org-input, the management cluster with highest values of organic matter application and no tillage. We found significantly higher values of vegetation density (***) and root abundance (**) for perm-cover-livestock, the cluster with no tillage, integration of livestocks, and permanent cover (*** p < 0.001, ** p < 0.01, *p < 0.05, • p > 0.1). Conclusions:We support existing knowledge on positive impacts of regenerative practices, namely, the addition of an organic amendment that improved C-related parameters,This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Soil organic carbon saturation in cropland-grassland systems: Storage potential and soil quality

Cited by 50 publications

References 61 publications

Effects of biochar and vermicompost on microorganisms and enzymatic activities in greenhouse soil

Effects of biochar and vermicompost on microorganisms and enzymatic activities in greenhouse soil

Comparison of carbon content in soil and biomass in various types of sub-optimal dryland use in Aceh Besar, Indonesia

The potential of regenerative agriculture to improve soil health on Gotland, Sweden

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