How does burning of rice straw affect CH4 and N2O emissions? A comparative experiment of different on-field straw management practices

Romasanta, Ryan R.; Sander, Bjoern Ole; Gaihre, Yam Kanta; Alberto, Ma. Carmelita R.; Gummert, Martin; Quilty, James R.; Hùng, Nguyễn Văn; Castalone, Angeli Grace; Balingbing, Carlito; Sandro, Joseph M.; Correa, Teodoro Q.; Waßmann, Reiner

doi:10.1016/j.agee.2016.12.042

Cited by 169 publications

(69 citation statements)

References 37 publications

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“…Furthermore, the absorption peaks of MG6 disappear at 1734 cm − 1 and 1512 cm − 1 of MG1, indicating that the NaOH Wavenumber (cm -1 ) Figure 5: FTIR spectrogram of wheat straw fibers before and after modifications. 6 Advances in Materials Science and Engineering solution dissolves partially hemicellulose and lignin, depleting their contents, enhancing the crystallinity [36], and ultimately lowering water absorption. As compared with water modifying, with the removal of alkali extracts, the damage caused to hemicellulose and lignin molecular chains is greater than that of the water-modified fibers, and surface pores and defects of the fibers are more exposed (Figure 6).…”

Section: Effect Of Modification Methods On Chemical Structure Ofmentioning

confidence: 99%

“…Straw incineration in open air not only wastes valuable renewable natural resources but also causes environmental pollution and poses great threats to traffic safety of highways, railways, and civil aviation flights and causes serious harm to human health and safety. It has become a major social problem [6,7]. erefore, it has become an urgent task for the scientific researchers in China and the world to speed up the comprehensive utilization of straw resources and realize the commercialization and recycling of straw to improve the atmospheric environment.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Modification Methods of Wheat Straw Fibers on Water Absorbency and Mechanical Properties of Wheat Straw Fiber Cement-Based Composites

Jiang

Cui

et al. 2020

Advances in Materials Science and Engineering

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Five modification methods are adopted for wheat straw fibers (WSFs). e effects of modification methods on the water absorbency of wheat straw fiber/wheat straw fiber cement-based composite (WSFCC) and the mechanical properties of WSFCC are analyzed. e crystallinity, chemical structure, and micromorphology of WSFs and WSFCC 28-day specimens are characterized by XRD, FTIR, and SEM methods. e results show that the water absorption of WSFs modified with sodium silicate solution, pure acrylic acid emulsion, and silicone waterproof emulsion surface spraying is 10.67%, 5.18%, and 1.05% lower than that of unmodified WSFs, respectively. Alkali modification is the ideal method for improving the strength of WSFCC. Establishing a fitting formula of the relationship between water absorption of WSFs and strength of WSFCC specimens has important theoretical and practical guiding significance for development and application of WSFCC.

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Section: Effect Of Modification Methods On Chemical Structure Ofmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Modification Methods of Wheat Straw Fibers on Water Absorbency and Mechanical Properties of Wheat Straw Fiber Cement-Based Composites

Jiang

Cui

et al. 2020

Advances in Materials Science and Engineering

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“…This glide could be attributed to the appearance of large-scale haze episodes in China, leading to a series of control policies. Due to the serious impact of air pollution, the government began to pay more attention to the crop residue burning, which could emit large amounts of CO 2 and other air pollutants [29][30][31]. Meanwhile, national environmental supervision, including the control of crop residue burning, has been conducted since January, 2015.…”

Section: The Attribution Of the Temporal Distribution Of Crop Residuementioning

confidence: 99%

Understanding Temporal and Spatial Distribution of Crop Residue Burning in China from 2003 to 2017 Using MODIS Data

Zhuang

Yang

et al. 2018

Remote Sensing

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Abstract:Crop residue burning, which is a convenient approach to process excessive crop straws, has a negative impact on local and regional air quality and soil structures. China, as a major agricultural country with a large population, should take more effective measures to control crop residue burning. In this case, a better understanding of long-term spatio-temporal variations of crop residue burning in China is required. The MODIS products MOD14A1/MYD14A1 were employed in this research. Meanwhile, due to the vast territory of China, we divided the study area into seven regions based on the national administrative divisions to examine crop residue burning in each region, respectively. The temporal analysis of crop residue burning in different regions demonstrates a fluctuated, but generally upward, trend from 2003 to 2017. For monthly variations of crop residue burning in different regions, detected fire spots in June mainly concentrated in Central China (CC), East China (EC), and North China (NC). A majority of detected fire spots in Northeast China (NEC) and Northwest China (NWC) appeared in April and October. For other months, a small number of fire spots were distributed in all regions in a scattered manner. Furthermore, from a spatio-temporal perspective, this research revealed that crop residue burning in NEC was the most active among all regions both in spring and autumn. For summer, EC holds a larger proportion of burning spots than other regions. For winter, the number of burning spots in most regions was close. This research conducts a comprehensive analysis of crop residue burning in China at both a national and regional scale. The methodology and results from this research provide useful reference for better monitoring and controlling crop residue burning in China.

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“…The benefits of complete straw removal on reducing emissions, however, are offset by reduced SOC sequestration, soil quality, and long-term yields. Maximum emission reductions and yield (and SOC deposition) may be best achieved by partial straw return/removal in most continuous rice systems (Romasanta et al 2017). This balance can still increase SOC storage over time and provide adequate crop nutrients.…”

Section: Water Managementmentioning

confidence: 99%

Rice Straw Management Effects on Greenhouse Gas Emissions and Mitigation Options

Allen

Pascual

Romasanta

et al. 2019

Sustainable Rice Straw Management

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Lowland rice is a significant source of anthropogenic greenhouse gas emissions (GHGEs) and the primary source of agricultural emissions for many developing countries in Asia. At the same time, rice soils represent one of the largest global soil organic carbon sinks. Straw management is a key factor in controlling the emissions and mitigation potential of rice primarily by affecting methane (CH 4 ) from anaerobic decomposition and carbon losses from burning. Achieving climatesmart management of rice while also improving yields and farm profits, however, is challenging due to economic-environmental trade-offs. This balance could be met with appropriate site-specific practices. This chapter discusses these straw management practices that affect yield-scaled GHGEs and mitigation options in different rice environments.

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How does burning of rice straw affect CH4 and N2O emissions? A comparative experiment of different on-field straw management practices

Cited by 169 publications

References 37 publications

Effect of Modification Methods of Wheat Straw Fibers on Water Absorbency and Mechanical Properties of Wheat Straw Fiber Cement-Based Composites

Effect of Modification Methods of Wheat Straw Fibers on Water Absorbency and Mechanical Properties of Wheat Straw Fiber Cement-Based Composites

Understanding Temporal and Spatial Distribution of Crop Residue Burning in China from 2003 to 2017 Using MODIS Data

Rice Straw Management Effects on Greenhouse Gas Emissions and Mitigation Options

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