Biogeochemical transformation of greenhouse gas emissions from terrestrial to atmospheric environment and potential feedback to climate forcing

Shakoor, Awais; Ashraf, Fatima; Shakoor, Saba; Mustafa, Adnan; Rehman, Abdul; Altaf, Muhammad Mohsin

doi:10.1007/s11356-020-10151-1

Cited by 76 publications

(31 citation statements)

References 238 publications

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“…Generally, animal manure comprises a significant amount of nitrogen, phosphorus, and other nutrients that the plant needs to grow (Cavalli et al, 2017). However, manure application significantly contributes up to 45% of global N 2 O emissions from the agricultural soils (Hou et al, 2016;Shakoor et al, 2020a). Microbial denitrification and nitrification processes considered the main processes for regulating the N 2 O from agricultural soils (Rodríguez, 2019;Shakoor et al, 2016), which are dependent on the availability of C and N substrate (Groffman and Tiedje, 1991;Zhou et al, 2017).…”

Section: The Overall Response Of Animal Manure and Biochar On N 2 O Emissionsmentioning

confidence: 99%

“…Nitrification is considered the dominant process that regulates the N 2 O emissions in coarse textured soils (Zhou et al, 2014). Furthermore, the application of animal manure significantly provides C substrate to denitrifiers that can easily increase N 2 O emissions from agricultural soils (Shakoor et al et al, 2020a). Fine textured soils have small pores due to aggregation (Kunickis et al, 2010) that can easily hold water contents.…”

Section: Soil Texturementioning

confidence: 99%

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Nitrous oxide emission from agricultural soils: Application of animal manure or biochar? A global meta-analysis

Shakoor

Shahzad

Chatterjee³

et al. 2021

Journal of Environmental Management

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Organic amendments (animal manure and biochar) to agricultural soils may enhance soil organic carbon (SOC) contents, improve soil fertility and crop productivity but also contribute to global warming through nitrous oxide (N 2 O) emission. However, the effects of organic amendments on N 2 O emissions from agricultural soils seem variable among numerous research studies and remains uncertain. Here, eighty-five publications (peer-reviewed) were selected to perform a meta-analysis study. The results of this meta-analysis study show that the application of animal manure enhanced N 2 O emissions by 17.7%, whereas, biochar amendment significantly mitigated N 2 O emissions by 19.7%. Moreover, coarse textured soils increased [lnRR = 182.6%, 95% confidence interval (CI) = 151.4%, 217.7%] N 2 O emission after animal manure, in contrast, N 2 O emission mitigated by 7.0% from coarse textured soils after biochar amendment. In addition, this study found that 121-320 kg N ha − 1 and ⩽ 30 T ha − 1 application rates of animal manure and biochar mitigated N 2 O emissions by 72.3% and 22.5%, respectively. Soil pH also played a vital role in regulating the N 2 O emissions after organic amendments. Furthermore, > 10 soil C: N ratios increased N 2 O emissions by 121.4% and 27.6% after animal and biochar amendments, respectively. Overall, animal manure C: N ratios significantly enhanced N 2 O emissions, while, biochar C: N ratio had not shown any effect on N 2 O emissions. Overall, average N 2 O emission factors (EFs) for animal manure and biochar amendments were 0.46% and − 0.08%, respectively. Thus, the results of this meta-analysis study provide scientific evidence about how organic amendments such as animal manure and biochar regulating the N 2 O emission from agricultural soils.

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Section: The Overall Response Of Animal Manure and Biochar On N 2 O Emissionsmentioning

confidence: 99%

Section: Soil Texturementioning

confidence: 99%

Nitrous oxide emission from agricultural soils: Application of animal manure or biochar? A global meta-analysis

Shakoor

Shahzad

Chatterjee³

et al. 2021

Journal of Environmental Management

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“…These challenges are leading to uncontrolled accumulation of greenhouses gases in the Earth's atmosphere [2]. The global concentration of greenhouse gas emissions (GHGs) has been accelerating particularly rapidly since the beginning of the industrial era because of various anthropogenic activities [3]; for instance, although the concentration of CO 2 in the 1760s was 280 ppm, the current estimate is 410 ppm, and is expected to reach 590 ppm by the end of 2100 [2]. The global tracking of greenhouse gas emissions provides a framework for assessing the contribution of individual countries to the climate change challenge.…”

Section: Introductionmentioning

confidence: 99%

GHGs Emission from the Agricultural Sector within EU-28: A Multivariate Analysis Approach

et al. 2021

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Climate mitigation and adaptation planning (CMAP) has recently been implemented across the EU-28 to reduce GHG emissions (CO2, CH4, N2O). Thus, the aim of this study was to provide an overview of GHG emissions from the agricultural sector in the EU-28 from 1990 to 2019, and cluster the EU-28 countries regarding their total GHG emissions. The results emphasize the positive impact of CMAP through a negative trend of the total GHG emissions (−2653.01 thousand tons/year, p < 0.05). Despite the positive and not significant trend of the total CO2 emissions, both CH4 and N2O exhibited a negative and significant trend. At the country scale, Italy, the United Kingdom, and the Netherlands showed the highest reduction in total GHG emissions, by −282.61thousand tons/year (p < 0.05), −266.40 thousand tons/year (p < 0.05), and −262.91 thousand tons/year (p < 0.05), respectively. The output of the multivariate analysis approach indicates changes in the pattern of GHG emissions between 1990 and 2019, where CO2 emissions decreased in the case of Poland and Czechia. The output of this study highlights the positive impact of CMAP, adopted by EU countries, in minimizing GHG emissions. Despite some fluctuations in CO2 emissions, strategies for attaining carbon neutrality in the agricultural sector, across the European Union, should be pursued.

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“…In Bangladesh, CO 2 emissions increased by 609% from 1990 to 2017 due to increased energy consumption and land use change 1 . A gradual increase in the emissions of carbon dioxide (CO 2 ) is believed to be a major contributor to global warming 2 – 4 . Although Bangladesh makes up only a small contribution to global emissions, the country is expected to be among the most vulnerable to climate change 5 , 6 .…”

Section: Introductionmentioning

confidence: 99%

Carbon stocks of homestead forests have a mitigation potential to climate change in Bangladesh

Baul

Peuly

Nandi

et al. 2021

Sci Rep

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A total of 176 homestead forests at three altitudes in the Chittagong Hill Tracts, Bangladesh were randomly surveyed to estimate carbon (C) stocks and how stand structure affects the biomass C. All woody vegetations were measured, and litter and soil (0–30 cm depth) were sampled. The tree biomass C stock in the top two altitude forests was up to 37–48% higher than in low altitude, owing to significantly higher tree density and species diversity. An increase in species diversity index by one unit increased the biomass stock by 23 Mg C ha−1. The C stock of litterfall in low altitude forests was 22–28% higher than in the top two altitude due to the deposition of litters downslope and deliberate use of mulch for soil improvement and conservation, resulting in up to 5% higher total soil C. The topsoil C was 10–25% higher than the deeper soil, depending on the altitude. The forest stored 89 Mg C ha−1, indicating a potential for C sequestration in trees outside forest. This study would help policymakers to strengthen the recognition of small-scale forests for mitigation in REDD + (reducing emissions from deforestation and forest degradation, the role of conservation, sustainable management of forests, and enhancement of forest carbon stocks) and support owners through C credits from sustainably managed forests.

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Biogeochemical transformation of greenhouse gas emissions from terrestrial to atmospheric environment and potential feedback to climate forcing

Cited by 76 publications

References 238 publications

Nitrous oxide emission from agricultural soils: Application of animal manure or biochar? A global meta-analysis

Nitrous oxide emission from agricultural soils: Application of animal manure or biochar? A global meta-analysis

GHGs Emission from the Agricultural Sector within EU-28: A Multivariate Analysis Approach

Carbon stocks of homestead forests have a mitigation potential to climate change in Bangladesh

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