Soil Inorganic Carbon as a Potential Sink in Carbon Storage in Dryland Soils—A Review

Naorem, Anandkumar; Somasundaram, J.; Dalal, Ram C.; Patra, A. K.; Rao, Cherukumalli Srinivasa; Lal, Rattan

doi:10.3390/agriculture12081256

Cited by 39 publications

(31 citation statements)

References 122 publications

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“…Because of climate constraints, the soils in arid regions have an inherently low stock of organic C (Table 3). However, they also have a lot of inorganic C, mostly in the form of soil carbonates (Table 3) [61]. On average, Lal [62] reported that dryland ecosystems sequestered between 0.1 and 0.2 Mg ha −1 year −1 of soil inorganic C. In addition to acting as a sink for atmospheric CO 2 , inorganic C in soil may also play a positive function in soil aggregation via the interaction of carbonates with SOM.…”

Section: Soil Organic and Inorganic Carbonmentioning

confidence: 99%

Soil Constraints in an Arid Environment—Challenges, Prospects, and Implications

et al. 2023

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Climate models project that many terrestrial ecosystems will become drier over the course of this century, leading to a drastic increase in the global extent of arid soils. In order to decrease the effects of climate change on global food security, it is crucial to understand the arid environment and the constraints associated with arid soils. Although the effects of aridity on aboveground organisms have been studied extensively, our understanding of how it affects soil processes and nutrient cycling is lacking. One of the primary agricultural constraints, particularly in arid locations, is water scarcity, due to which arid soils are characterized by sparse vegetation cover, low soil organic carbon, poor soil structure, reduced soil biodiversity, and a high rate of soil erosion via wind. Increased aridity will limit the availability of essential plant nutrients and crop growth, and subsequently pose serious threats to key ecological processes and services. The increasing rate of soil salinization is another major environmental hazard that further limits the agricultural potential of arid soils. These soil constraints can be ameliorated and the crop yields increased through case-specific optimization of irrigation and drainage management, enhancing the native beneficial soil microbes, and combinations of soil amendments, conditioners, and residue management. This review explores technologies to ameliorate soil constraints and increase yields to maintain crop output in arid soils.

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Section: Soil Organic and Inorganic Carbonmentioning

confidence: 99%

Soil Constraints in an Arid Environment—Challenges, Prospects, and Implications

et al. 2023

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“…According to the authors, Jones (2003) and Dessalegn et al (2014), uncontrolled erosion causes the removal of basic cations like magnesium and calcium and leaves behind unbalanced acidic cations, resulting in a decline in pH. Low pH in a degraded system lowers the restoration rates and reduces carbon sequestration (Rengel, 2003;Naorem et al, 2022). Variation of soil TOC, TN, and C:N across the vegetation cover practices, indicated by the findings were attributive to the benefits of the terraces as a conservation measure, particularly in highly disturbed systems like farmlands.…”

Section: Discussion Soil Properties Change Across Vegetation Cover ...mentioning

confidence: 99%

Effect of land rehabilitation measures on soil organic carbon fractions in semi-arid environment

Mutio

Kebeney²,

Njoroge³

et al. 2023

Front. Sustain. Food Syst.

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Soil erosion threatens the sustainable intensification of food systems among smallholder farmers in arid and semi-arid lands (ASALs). Intensifying adoption of soil mitigation and rehabilitation measures is thus needed urgently in these ASALs, but scaling up these measures depends on scientific evidence of their contributions to key components of sustainable intensification such as soil organic carbon. However, there is no information on how existing mitigation and rehabilitation measures influence soil carbon fractions and carbon management indices in ASALs. This study evaluated the influence of soil erosion mitigation and rehabilitation measures on soil carbon fractions and management indices in Arenic Lixisols of semi-arid environments in West Pokot County, Kenya. We evaluated different vegetation types (maize-beans intercrop and pastures) with and without two locally developed terrace designs for soil conservation (Fanya Juu and Fanya Chini). Combining terracing with annual cropping significantly increased total organic carbon (TOC). The highest TOC (13 g C kg−1) was recorded in pasturelands with terraces while degraded land with no intervention was found to have the lowest TOC (6.0 g C kg−1). Terraced farms with longer residence time (>4 years old) had significantly higher organic carbon than (<4 years old). Other soil properties remained stable with terrace age (1–5 years). Labile SOC and non-labile SOC differed significantly within and across vegetation types with or without terraces (p < 0.05). Pasture and crop systems with terraces had high labile SOC content of 5.9 g C kg−1 and 7.2 g C kg−1, respectively. Labile SOC followed the TOC trend with terrace age, i.e., increasing from 1 year to 5 years old. Combined pasture and terraces had a significantly higher carbon management index (CMI) of 161.7, or 14 times the CMI found in degraded systems with no interventions and 1.5 times the combined crop system with terraces. CMI was also directly correlated with residence time terraces had stayed in the crop system, increasing from 1 year to 5 years old. Contrary to CMI and other indices, the weighted enrichment ratio was found to inversely correlate with age of terrace. Improvement of carbon content and CMI resulted from restorative measures and likely improved soil quality and ecosystem functions. Although terraces play a significant role in the restoration of degraded soils as indicated by the above-mentioned changes, they are most beneficial when used in combination with croplands because of the high level of disturbance and flows of both inputs and outputs of carbon for these croplands.

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“…Agricultural soil carbon sinks in China have significant potential to reduce emissions, representing an important means to cope with climate change. Therefore, it is very important to deeply understand the current situation of agricultural carbon sinks and carbon sources in China, as well as their spatiotemporal evolution over long periods of time, in order to guide the next step of agricultural modernization and low carbon ( Figure 3 ) [ 12 , 13 , 14 , 15 , 16 , 17 , 18 ].…”

Section: Literature Review Of Soil Carbon Sequestrationmentioning

confidence: 99%

“… Natural and anthropogenic factors influencing the formation of soil inorganic carbon in dryland soils (Naorem, A [ 18 ]). …”

Section: Figurementioning

confidence: 99%

Exploration of the Implementation of Carbon Neutralization in the Field of Natural Resources under the Background of Sustainable Development—An Overview

Zhang

Yang

et al. 2022

IJERPH

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On 15 March 2021, Chinese President Xi Jinping pointed out that “achieving carbon peak and carbon neutrality is a broad and profound economic and social systemic change” and called for “putting energy and resources conservation in the first place”. Natural resources are the material basis, space carrier and energy source of high-quality development. The source of carbon emissions is resource utilization, and carbon reduction and removal also depend on resources. The improvement of carbon sink capacity is inseparable from natural resources. To achieve the goal of “double carbon”, it is necessary to consolidate the carbon sink capacity of the ecosystem, as well as enhancing its carbon sink increment. Among natural resources, forest carbon sinks, soil carbon sinks and karst carbon sinks have significant emission reduction potential and cost advantages, representing important means to deal with climate change. This paper reviews the relevant research results at home and abroad, summarizes the carbon sink estimation, carbon sink potential, carbon sink influencing factors, ecological compensation mechanism and other aspects, analyzes the path selection of establishing carbon sink green development, and puts forward corresponding policies and suggestions, providing a theoretical reference for the achievement of the carbon neutrality goal in the field of natural resources in China.

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Soil Inorganic Carbon as a Potential Sink in Carbon Storage in Dryland Soils—A Review

Cited by 39 publications

References 122 publications

Soil Constraints in an Arid Environment—Challenges, Prospects, and Implications

Soil Constraints in an Arid Environment—Challenges, Prospects, and Implications

Effect of land rehabilitation measures on soil organic carbon fractions in semi-arid environment

Exploration of the Implementation of Carbon Neutralization in the Field of Natural Resources under the Background of Sustainable Development—An Overview

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