Soil organic carbon content affects the stability of biochar in paddy soil

Wu, Mengxiong; Han, Xingguo; Zhong, Ting; Yuan, Mengdong; Wu, Weixiang

doi:10.1016/j.agee.2016.02.033

Cited by 49 publications

(18 citation statements)

References 37 publications

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“…Soil properties also affect long-term CO 2 sequestration capacity. Wu et al (2016) reported that paddy soils with low organic carbon content were suitable for CO 2 sequestration by biochar on a long-term basis [69]. Other geo-environmental parameters, including climate [70], topography [71], soil microorganisms [72,73], and soil management practices such as tillage, irrigation, and fertilization [74], also affected the content of soil carbon.…”

Section: Inorganic Carbonsmentioning

confidence: 99%

The Role of Biochar in Regulating the Carbon, Phosphorus, and Nitrogen Cycles Exemplified by Soil Systems

Pan

Dong

et al. 2021

Sustainability

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Biochar is a carbon-rich material prepared from the pyrolysis of biomass under various conditions. Recently, biochar drew great attention due to its promising potential in climate change mitigation, soil amendment, and environmental control. Obviously, biochar can be a beneficial soil amendment in several ways including preventing nutrients loss due to leaching, increasing N and P mineralization, and enabling the microbial mediation of N2O and CO2 emissions. However, there are also conflicting reports on biochar effects, such as water logging and weathering induced change of surface properties that ultimately affects microbial growth and soil fertility. Despite the voluminous reports on soil and biochar properties, few studies have systematically addressed the effects of biochar on the sequestration of carbon, nitrogen, and phosphorus in soils. Information on microbially-mediated transformation of carbon (C), nitrogen (N), and phosphorus (P) species in the soil environment remains relatively uncertain. A systematic documentation of how biochar influences the fate and transport of carbon, phosphorus, and nitrogen in soil is crucial to promoting biochar applications toward environmental sustainability. This report first provides an overview on the adsorption of carbon, phosphorus, and nitrogen species on biochar, particularly in soil systems. Then, the biochar-mediated transformation of organic species, and the transport of carbon, nitrogen, and phosphorus in soil systems are discussed. This review also reports on the weathering process of biochar and implications in the soil environment. Lastly, the current knowledge gaps and priority research directions for the biochar-amended systems in the future are assessed. This review focuses on literatures published in the past decade (2009–2021) on the adsorption, degradation, transport, weathering, and transformation of C, N, and P species in soil systems with respect to biochar applications.

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Section: Inorganic Carbonsmentioning

confidence: 99%

The Role of Biochar in Regulating the Carbon, Phosphorus, and Nitrogen Cycles Exemplified by Soil Systems

Pan

Dong

et al. 2021

Sustainability

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“…Similar results were also reported by Bruun et al (2012) and Yin et al (2014) where CO 2 efflux were associated to mineralization of labile C content of biochar. Wu et al (2016) and Teutscherova et al (2017) reported that combined application of biochar and compost exerted positive effect on C mineralization and soil organic matter decomposition. Similar to these results, Deng et al (2017) also found that soil respiration increased with increasing doses of biochar at least during the first 30 days of incubation period.…”

Section: Nitrogen Mineralizationmentioning

confidence: 99%

Biochar Application Improves Soil Respiration and Nitrogen Mineralization in Alkaline Calcareous Soil under Two Cropping Systems

Shah¹,

Tariq²,

Muhammad³

2021

SJA

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“…To improve the utilization efficiency of straw, crop straw can be converted into biochar. It has been reported that straw biochar can significantly increase the content of soil organic matter and maintain soil quality [6], and the application of straw-derived biochar was reported to enhance carbon sequestration in paddy soils [7]. Soil organic carbon mineralization is an important carbon source for CO 2 emissions, and organic carbon fixation is of great significance to the CO 2 sink [8].…”

Section: Introductionmentioning

confidence: 99%

Effects of Two Types of Straw Biochar on the Mineralization of Soil Organic Carbon in Farmland

et al. 2020

Sustainability

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To investigate the effects of biochar on soil carbon composition and transformation, the effects of 1%, 2%, and 5% mass ratios of banana and cassava straw biochar on carbon dioxide release, total organic carbon (TOC), soluble organic carbon (SOC), and enzyme activity in soil were studied in incubation experiments at a constant temperature in the laboratory. The results showed that the cumulative CO2 emissions from cassava straw were 15.82 (1% addition ratio) and 28.14 μg·kg−1 (2%), which were lower than those from banana straw, i.e., 46.77 (1%) and 59.26 μg·kg−1 (2%). After culture, the total organic carbon contents of cassava straw were 8.55 (5%), 5.27 (2%), and 3.98 μg·kg−1 (1%), which were higher than those of banana straw, i.e., 6.31 (5%), 4.23 (2%), and 3.16 μg·kg−1 (1%). The organic carbon mineralization rate in each treatment showed a trend of increasing first, then decreasing, and finally stabilizing. There was a very significant positive correlation between catalase and urease activity in soil with cassava straw biochar and between catalase activity and SOC mineralization with banana straw biochar. It plays an important role in the transformation and decomposition of organic carbon. These results show that the application of biomass carbon can significantly improve the organic carbon content and enzyme activity of farmland soil, increase the cumulative mineralization amount and mineralization rate of SOC, and thus increase the carbon sequestration capacity of soil.

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Soil organic carbon content affects the stability of biochar in paddy soil

Cited by 49 publications

References 37 publications

The Role of Biochar in Regulating the Carbon, Phosphorus, and Nitrogen Cycles Exemplified by Soil Systems

The Role of Biochar in Regulating the Carbon, Phosphorus, and Nitrogen Cycles Exemplified by Soil Systems

Biochar Application Improves Soil Respiration and Nitrogen Mineralization in Alkaline Calcareous Soil under Two Cropping Systems

Effects of Two Types of Straw Biochar on the Mineralization of Soil Organic Carbon in Farmland

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