Evaluation of carbon sequestration potential in corn fields with different management systems

Khorramdel, Soroor; Koocheki, A.; Mahallati, Mehdi Nassiri; Khorasani, Reza; Ghorbani, Reza

doi:10.1016/j.still.2013.04.008

Cited by 44 publications

(27 citation statements)

References 43 publications

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“…Agricultural management practices, such as tillage and fertilization, control the decomposition rates of soil organic matter (SOM) (Lal, 2004;Marquina et al, 2015;Sauerbeck, 2001;West & Marland, 2002), strongly influencing the CO 2 exchange between soil and atmosphere. Fertilization rate and type (Lal, 2004) also affect soil CO 2 efflux by controlling the quality and quantity of SOM (Khorramdel, Koocheki, Nassiri Mahallati, Khorasani, & Ghorbani, 2013) and thus its decomposition rate (Sauerbeck, 2001). While soil inorganic carbon (SIC) comprises most of the soil C pool, especially in arid and semiarid regions (Eswaran et al, 2000), the contribution of CaCO 3 to soil CO 2 efflux is usually neglected (Kuzyakov, 2006;Rey, 2015;Zamanian, Pustovoytov, & Kuzyakov, 2016).…”

Section: Introductionmentioning

confidence: 99%

Nitrogen fertilization raises CO₂ efflux from inorganic carbon: A global assessment

Zamanian

Zarebanadkouki

Kuzyakov

2018

Global Change Biology

194

118

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Nitrogen (N) fertilization is an indispensable agricultural practice worldwide, serving the survival of half of the global population. Nitrogen transformation (e.g., nitrification) in soil as well as plant N uptake releases protons and increases soil acidification. Neutralizing this acidity in carbonate-containing soils (7.49 × 10 ha; ca. 54% of the global land surface area) leads to a CO release corresponding to 0.21 kg C per kg of applied N. We here for the first time raise this problem of acidification of carbonate-containing soils and assess the global CO release from pedogenic and geogenic carbonates in the upper 1 m soil depth. Based on a global N-fertilization map and the distribution of soils containing CaCO , we calculated the CO amount released annually from the acidification of such soils to be 7.48 × 10 g C/year. This level of continuous CO release will remain constant at least until soils are fertilized by N. Moreover, we estimated that about 273 × 10 g CO -C are released annually in the same process of CaCO neutralization but involving liming of acid soils. These two CO sources correspond to 3% of global CO emissions by fossil fuel combustion or 30% of CO by land-use changes. Importantly, the duration of CO release after land-use changes usually lasts only 1-3 decades before a new C equilibrium is reached in soil. In contrast, the CO released by CaCO acidification cannot reach equilibrium, as long as N fertilizer is applied until it becomes completely neutralized. As the CaCO amounts in soils, if present, are nearly unlimited, their complete dissolution and CO release will take centuries or even millennia. This emphasizes the necessity of preventing soil acidification in N-fertilized soils as an effective strategy to inhibit millennia of CO efflux to the atmosphere. Hence, N fertilization should be strictly calculated based on plant-demand, and overfertilization should be avoided not only because N is a source of local and regional eutrophication, but also because of the continuous CO release by global acidification.

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Section: Introductionmentioning

confidence: 99%

Nitrogen fertilization raises CO₂ efflux from inorganic carbon: A global assessment

Zamanian

Zarebanadkouki

Kuzyakov

2018

Global Change Biology

194

118

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“…Carbon sequestration is an effective way to reduce atmospheric carbon dioxide [25]. The carbon content of the total yield is assumed to be about 0.45 g g 21 yield [56].…”

Section: Carbon Efficiency Ratiomentioning

confidence: 99%

“…As crops are a major consumer of the atmospheric CO 2 , carbon sequestration analysis can also be a useful tool in assaying the environmental impacts of crop production [25]. In this regard, carbon sequestration, GHG emissions, and energy use efficiency of sugar beet production in western Iran were studied by Yousefi et al [26], who reported that the highest share of input energy was for nitrogen fertilizer, electricity, diesel oil, and water for irrigation, respectively.…”

Section: Introductionmentioning

confidence: 99%

An integrated analysis of non‐renewable energy use, GHG emissions, carbon efficiency of groundnut sole cropping and groundnut‐bean intercropping agro‐ecosystems

Firouzi

Nikkhah

Rosentrater

2017

Env Prog and Sustain Energy

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The aim of this study was to investigate the non‐renewable energy use efficiency, greenhouse gas (GHG) emissions, and carbon efficiency of groundnut sole cropping and groundnut‐bean intercropping agro‐ecosystems. Data were collected from 136 farmers using face‐to‐face questionnaires in the Kiashahr region of northern Iran. The results analysis suggested that the non‐renewable energy ratio of groundnut‐bean intercrop agro‐ecosystem (6.03) was greater than that of groundnut sole cropping system (4.59). The highest share of non‐renewable energy belonged to diesel fuel, which was followed by the nitrogen fertilizer for both systems. This demonstrates the importance of fossil fuel and N fertilizer use management in both agro‐ecosystems. The total GHG emissions from groundnut and groundnut‐bean intercrop agro‐ecosystems were computed as 636.14 and 657.36 kgCO2eq ha−1, respectively. The highest impact of GHG emissions was from diesel fuel within both farming systems, confirming the prominent role of the fossil fuel input again. The carbon efficiency for groundnut‐bean intercrop agro‐ecosystem (14.78) was greater than that of the groundnut sole cropping system (11.14). Therefore, groundnut‐bean agro‐ecosystem can be observed to be more effective for carbon sequestration. The use of greater amounts of biological resources helps to improve the efficiency of energy use and mitigation of GHG emissions in both agro‐ecosystems. © 2017 American Institute of Chemical Engineers Environ Prog, 36: 1832–1839, 2017

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“…If land has been previously occupied with crops rather than forests, this situation changes according to the carbon content of the crop cultivated prior to the establishment of dwarf orchards: Caatinga forest (savanna) carbon content in cashew-producing regions averages 14.9 t C ha À1 (MCT, 2010), common cashew orchards aged 25 to 45 average 52 t C ha À1 (Montenegro, 2011), and corn fields average 0.75 t C ha À1 (Khorramdela et al, 2013). Thus, if dwarf orchards are located on land previously occupied by the common cashew (scenario 1), the impact of the REF-farm on climate change may increase by 67 percent (Fig.…”

Section: Impacts Of Cashew Cropping Systems Considering the Land Manmentioning

confidence: 99%

Environmental assessment of tropical perennial crops: the case of the Brazilian cashew

Figueiredo

Potting

Serrano

et al. 2016

Journal of Cleaner Production

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Evaluation of carbon sequestration potential in corn fields with different management systems

Cited by 44 publications

References 43 publications

Nitrogen fertilization raises CO₂ efflux from inorganic carbon: A global assessment

Nitrogen fertilization raises CO₂ efflux from inorganic carbon: A global assessment

An integrated analysis of non‐renewable energy use, GHG emissions, carbon efficiency of groundnut sole cropping and groundnut‐bean intercropping agro‐ecosystems

Environmental assessment of tropical perennial crops: the case of the Brazilian cashew

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Evaluation of carbon sequestration potential in corn fields with different management systems

Cited by 44 publications

References 43 publications

Nitrogen fertilization raises CO2 efflux from inorganic carbon: A global assessment

Nitrogen fertilization raises CO2 efflux from inorganic carbon: A global assessment

An integrated analysis of non‐renewable energy use, GHG emissions, carbon efficiency of groundnut sole cropping and groundnut‐bean intercropping agro‐ecosystems

Environmental assessment of tropical perennial crops: the case of the Brazilian cashew

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Nitrogen fertilization raises CO₂ efflux from inorganic carbon: A global assessment

Nitrogen fertilization raises CO₂ efflux from inorganic carbon: A global assessment