The sensitivity of soil organic carbon pools to land management varies depending on former tillage practices

Miller, G A; Rees, Robert M.; Griffiths, Bryan; Ball, B. C.; Cloy, Joanna M.

doi:10.1016/j.still.2019.104299

Cited by 14 publications

(11 citation statements)

References 39 publications

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“…The conundrum is that the soil organic matter is a crucial metric for soil health, but it is a difficult metric to interpret changes in soil health in the short term. The labile C indicators are included to work as the early detector of the effect of management practice (Luo et al 2015;Bongiorno et al 2019;Miller et al 2019). By representing both the labile (active C and soil protein) and more stable measures of soil organic matter (TC and TN, SOC), the SASH framework might offer a more useful metric to detect early changes, rather than relying on soil organic matter measures alone.…”

Section: Discussionmentioning

confidence: 99%

A soil health scoring framework for arable cropping systems in Saskatchewan, Canada

Congreves

2022

Can. J. Soil. Sci.

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Farmers are looking for appropriate tools for assessing and interpreting the health status of their soils; however, there is no standardized and prairie-based soil health scoring framework. As such, we focused on developing one for arable cropping systems in Saskatchewan. In 2018, soil samples (0-15, 15-30, and 30-60 cm depths) were collected from 55 arable fields across Saskatchewan, along with native prairie samples. Various soil chemical, physical, and biological attributes were measured (23 attributes in total). Based on the data distribution for each attribute, we developed scoring functions. The results from multivariate analyses were used to determine the weighting factors needed to integrate the individual scores from each soil attribute into a single Saskatchewan Assessment of Soil Health (SASH) score. Soil C and N indices (soil organic C, active C, total N, and soil protein) and total P produced the highest weighting factors. We also tested if there were linkages between the soil health and crop productivity by assessing the cereal yields for the past 10 years as reported from the same rural municipalities where the soil samples were collected. A positive relationship between soil health and yields was most apparent during dry years; thus, we recommend further research to explore this linkage at a finer-scale. Overall, this research forms the foundation of a promising framework that can be built upon, and in due course, lead to the development of a tool for producers who are interested in tracking soil health and using the results to inform management.

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Section: Discussionmentioning

confidence: 99%

A soil health scoring framework for arable cropping systems in Saskatchewan, Canada

Congreves

2022

Can. J. Soil. Sci.

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“…In addition to molecular structure, physical protection of organic material within soil aggregates and the chemical absorption of organic molecules by soil minerals (chemical protection) are also important to SOC stability (Angst et al, 2021; Gao, Wang, Li, Wu, et al, 2019; Zhang et al, 2017). Dead crop material converted into organic products can form intimate associations with soil aggregates and soil minerals through physicochemical and biological transformation (Lehmann & Kleber, 2015; Miller et al, 2019). Soil aggregates are a vital physical property, and nearly 90% of SOC in topsoil exists in aggregates (Jastrow, 1996), which are usually divided into different size classes with different stability (Devine et al, 2014; Modak et al, 2020; Razafimbelo et al, 2008; Six, Bossuyt, et al, 2004; Zhang, Zhu et al, 2018).…”

Section: Factors Affecting Soc Stabilitymentioning

confidence: 99%

“…Soil aggregates are a vital physical property, and nearly 90% of SOC in topsoil exists in aggregates (Jastrow, 1996), which are usually divided into different size classes with different stability (Devine et al, 2014; Modak et al, 2020; Razafimbelo et al, 2008; Six, Bossuyt, et al, 2004; Zhang, Zhu et al, 2018). Miller et al (2019) concluded that, besides occlusion within soil aggregates, chemical protection through association with soil minerals also determines SOC stability. Thus, interest in SOC stability, mineral‐mediated chemical stabilization, has increased considerably in recent years (Patzner et al, 2020).…”

Section: Factors Affecting Soc Stabilitymentioning

confidence: 99%

Mechanisms of soil organic carbon stability and its response to no‐till: A global synthesis and perspective

Kan

Liu

et al. 2021

Global Change Biology

147

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Mitigation to climate change due to the ever-increasing greenhouse gas (GHG) emissions is a challenging global issue (van Groenigen et al., 2011). Carbon (C) contained in soils to 1 m depth is about three times as much as in the atmosphere. Thus, even a small proportion of soil organic C (SOC) could induce quantitatively relevant variations in atmospheric carbon dioxide (CO 2 ) and generate positive feedbacks to climate change (Lal, 2004a). Furthermore, SOC plays a key role in determining soil health and agricultural productivity

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“…The conversion of land from natural ecosystems to agricultural lands has resulted in the global loss of 133 Pg of C from the soil, and it is widely acknowledged that these degraded, carbon‐depleted lands offer the greatest potential to store significant additional quantities of carbon by implementing restorative land management practices (Lal, 2018; Sanderman et al, 2017). The influence of land use change, because of the alteration of management practices such as ploughing, on the physical fractions of topsoil SOM is well understood (Leifeld & Kögel‐Knabner, 2005; Miller et al, 2019). However, the impact that land use and land management change have on subsoils is more likely to be influenced by the depth and composition of root exudates, the leaching of dissolved organic matter, and the burial of organic matter by soil organisms (Lorenz & Lal, 2005).…”

Section: Introductionmentioning

confidence: 99%

Soil organic matter storage in temperate lowland arable, grassland and woodland topsoil and subsoil

Antony

Collins

Clark

et al. 2022

Soil Use and Management

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Increasing concentrations of atmospheric CO 2 are currently causing global concern because of their propensity to change our climate (Smith et al., 2016). Soils contain approximately 1500 Gt of organic carbon to a depth of 1 m globally and represent the largest terrestrial pool of organic carbon (Batjes, 1996;Jobbágy & Jackson, 2000). Cultivation and management of agricultural soils and the associated liberation of organic carbon as CO 2 have been cited as major factors contributing to this atmospheric CO 2 increase (Lal, 2018). Recent policy initiatives (e.g.

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The sensitivity of soil organic carbon pools to land management varies depending on former tillage practices

Cited by 14 publications

References 39 publications

A soil health scoring framework for arable cropping systems in Saskatchewan, Canada

A soil health scoring framework for arable cropping systems in Saskatchewan, Canada

Mechanisms of soil organic carbon stability and its response to no‐till: A global synthesis and perspective

Soil organic matter storage in temperate lowland arable, grassland and woodland topsoil and subsoil

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