Forest and grassland cover types reduce net greenhouse gas emissions from agricultural soils

Baah-Acheamfour, Mark; Carlyle, Cameron N.; Lim, Sang-Sun; Bork, Edward W.; Chang, Scott X.

doi:10.1016/j.scitotenv.2016.07.106

Cited by 55 publications

(37 citation statements)

References 73 publications

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“…A closed-chamber method [31][32][33] was used to estimate the CO 2 , CH 4 , and N 2 O emission fluxes. Rounded PVC chambers (50 cm in diameter and 3 cm in height) were placed permanently under the pots as pedestals.…”

Section: Gas Sampling and Analysismentioning

confidence: 99%

“…In this study, the net greenhouse gas emissions from each treatment were between 25.11 and 59.52 t·hm −2 , which was the "source" of the greenhouse gases. West and Marland [73] and Baahacheamfour et al [33] also hold the idea that the net greenhouse gases of the farmland ecosystem were mainly emitted rather than being sequestered. The net GHGS of CK FW , NPK FW , and BC FW increased by 33.6%, 17.6%, and 15.1%, respectively, more than that of the CK F , NPK F , and BC F treatments.…”

Section: Net Greenhouse Gas Balance Of the Ghg Emissions Of The Soilmentioning

confidence: 99%

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Effects of Biochar on the Net Greenhouse Gas Emissions under Continuous Flooding and Water-Saving Irrigation Conditions in Paddy Soils

Niu

Zhou

et al. 2018

Sustainability

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In this study, we investigated the greenhouse gas emission under different application of biochar in the conditions of continuous flooding and water-saving irrigation in paddy fields, whereas, plant and soil carbon sequestration were considered in the calculation of net greenhouse gas emissions. The emission rates of methane (CH 4 ), carbon dioxide (CO 2 ), and nitrous oxide (N 2 O) gases were simultaneously monitored once every 7-10 days using the closed-chamber method. As a whole, the net greenhouse gas emission in the water-saving irrigation was more than that of the continuous flooding irrigation conditions. Compared with the water-saving irrigation, the continuous flooding irrigation significantly increased the CH 4 in the control (CK) and chemical fertilizer treatments (NPK). The CO 2 emissions increased in each treatment of the water-saving irrigation condition, especially in the chemical fertilizer treatments (NPK FW ). Similarly, the soil N 2 O emission was very sensitive to the water-saving irrigation condition. An interesting finding is that the biochar application in soils cut down the soil N 2 O emission more significantly than NPK FW in the water-saving irrigation condition while the effect of biochar increased under the continuous flooding irrigation condition.

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Section: Gas Sampling and Analysismentioning

confidence: 99%

Section: Net Greenhouse Gas Balance Of the Ghg Emissions Of The Soilmentioning

confidence: 99%

Effects of Biochar on the Net Greenhouse Gas Emissions under Continuous Flooding and Water-Saving Irrigation Conditions in Paddy Soils

Niu

Zhou

et al. 2018

Sustainability

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“…Several estimates showed that agroforestry systems in temperate regions have higher C pools than other climatic regions [28,36]. Silvopastoral systems were found to be superior in terms of both C sequestration and reducing GHG emissions [32,34,41] compared to agroforestry systems that included annual cropland. Interventions like enrichment planting and organic amendment of soils to slow down nutrient release are also site-specific in regulating their effectiveness [13].…”

Section: Discussionmentioning

confidence: 99%

“…The SOC stock in both the 0-10 cm and 10-30 cm soil layers were greater within the forested land cover type than in the adjacent herbland [42]. In terms of GHG emissions, the silvopasture system had 15% greater CH 4 uptake and 44% lower N 2 O emission compared with the shelterbelt and silvopasture systems [34].…”

Section: Agroforestry/management Activities/location Carbon/ghg Data mentioning

confidence: 91%

“…Compared to sole herbland pastures, the presence of trees in the former leads to greater topsoil and subsoil C content, and larger litter inputs result in higher free and occluded organic matter (OM) fractions, and ultimately higher levels of stabilized SOM fractions [41]. A study in central Alberta, Canada showed that silvopastoral systems had higher SOC and lower GHG emissions compared to agroforestry systems containing either hedgerows or shelterbelts combined with annual cropland [32,34]. Mean SOC in the bulk soil at 0-10 cm depth was 81, 48 and 63 g kg −1 in the silvopasture, shelterbelt and hedgerow systems, respectively.…”

Section: Agroforestry/management Activities/location Carbon/ghg Data mentioning

confidence: 99%

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Enrichment Planting and Soil Amendments Enhance Carbon Sequestration and Reduce Greenhouse Gas Emissions in Agroforestry Systems: A Review

Shrestha

Chang

Bork

et al. 2018

Forests

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Agroforestry practices that intentionally integrate trees with crops and/or livestock in an agricultural production system could enhance carbon (C) sequestration and reduce greenhouse gas (GHG) emissions from terrestrial ecosystems, thereby mitigating global climate change. Beneficial management practices such as enrichment planting and the application of soil amendments can affect C sequestration and GHG emissions in agroforestry systems; however, such effects are not well understood. A literature review was conducted to synthesize information on the prospects for enhancing C sequestration and reducing GHG emissions through enrichment (i.e., in-fill) tree planting, a common practice in improving stand density within existing forests, and the application of organic amendments to soils. Our review indicates that in agroforests only a few studies have examined the effect of enrichment planting, which has been reported to increase C storage in plant biomass. The effect of adding organic amendments such as biochar, compost and manure to soil on enhancing C sequestration and reducing GHG emissions is well documented, but primarily in conventional crop production systems. Within croplands, application of biochar derived from various feedstocks, has been shown to increase soil organic C content, reduce CO 2 and N 2 O emissions, and increase CH 4 uptake, as compared to no application of biochar. Depending on the feedstock used to produce biochar, biochar application can reduce N 2 O emission by 3% to 84% as compared to no addition of biochars. On the other hand, application of compost emits less CO 2 and N 2 O as compared to the application of manure, while the application of pelleted manure leads to more N 2 O emission compared to the application of raw manure. In summary, enrichment planting and application of organic soil amendments such as compost and biochar will be better options than the application of raw manure for enhancing C sequestration and reducing GHG emissions. However, there is a shortage of data to support these practices in the field, and thus further research on the effect of these two areas of management intervention on C cycling will be imperative to developing best management practices to enhance C sequestration and minimize GHG emissions from agroforestry systems.

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Alley Cropping Practices

Garrett¹,

Wolz²,

Walter³

et al. 2021

ASA, CSSA, and SSSA Books

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Forest and grassland cover types reduce net greenhouse gas emissions from agricultural soils

Cited by 55 publications

References 73 publications

Effects of Biochar on the Net Greenhouse Gas Emissions under Continuous Flooding and Water-Saving Irrigation Conditions in Paddy Soils

Effects of Biochar on the Net Greenhouse Gas Emissions under Continuous Flooding and Water-Saving Irrigation Conditions in Paddy Soils

Enrichment Planting and Soil Amendments Enhance Carbon Sequestration and Reduce Greenhouse Gas Emissions in Agroforestry Systems: A Review

Alley Cropping Practices

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