Comparison of net global warming potential between continuous flooding and midseason drainage in monsoon region paddy during rice cropping

Haque, Md. Mozammel; Kim, Gil Won; Kim, Pil Joo; Kim, Sang Yoon

doi:10.1016/j.fcr.2016.04.007

Cited by 55 publications

(22 citation statements)

References 58 publications

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“…Significant increase in CO 2 emissions were observed mostly in rice paddy studies when continuous flooding was compared with intermittent drainage or flooding. In a study by Haque et al [71], the average CO 2 emissions were significantly increased by 47% in a mid-season drainage treatment compared to continuous flooding. A similar increase (19%) in CO 2 emissions was reported by Haque et al [72] in another study when they compared continuous flooding and intermittent drainage.…”

Section: Effects Of Irrigation On Co 2 Emissionsmentioning

confidence: 95%

“…For example, increase in N 2 O emissions (up to 4.5 kg N 2 O ha −1 ) was observed in studies that applied intermittent irrigation as compared to traditional irrigation or continuous flooding [65,72,77,83,[86][87][88]91]. Similarly, a number of studies demonstrated that continuous flooding leads to lower N 2 O emissions as compared to water-saving irrigation treatments in studies done in China, South Korea, and the USA [57,64,71,76,84,85].…”

Section: Effects Of Irrigation On N 2 O Emissionsmentioning

confidence: 98%

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Irrigation and Greenhouse Gas Emissions: A Review of Field-Based Studies

et al. 2020

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Irrigation practices can greatly influence greenhouse gas (GHG) emissions because of their control on soil microbial activity and substrate supply. However, the effects of different irrigation management practices, such as flood irrigations versus reduced volume methods, including drip and sprinkler irrigation, on GHG emissions are still poorly understood. Therefore, this review was performed to investigate the effects of different irrigation management strategies on the emission of nitrous oxide (N2O), carbon dioxide (CO2), and methane (CH4) by synthesizing existing research that either directly or indirectly examined the effects of at least two irrigation rates on GHG emissions within a single field-based study. Out of thirty-two articles selected for review, reduced irrigation was found to be effective in lowering the rate of CH4 emissions, while flood irrigation had the highest CH4 emission. The rate of CO2 emission increased mostly under low irrigation, and the effect of irrigation strategies on N2O emissions were inconsistent, though a majority of studies reported low N2O emissions in continuously flooded field treatments. The global warming potential (GWP) demonstrated that reduced or water-saving irrigation strategies have the potential to decrease the effect of GHG emissions. In general, GWP was higher for the field that was continuously flooded. The major finding from this review is that optimizing irrigation may help to reduce CH4 emissions and net GWP. However, more field research assessing the effect of varying rates of irrigation on the emission of GHGs from the agricultural field is warranted.

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Section: Effects Of Irrigation On Co 2 Emissionsmentioning

confidence: 95%

Section: Effects Of Irrigation On N 2 O Emissionsmentioning

confidence: 98%

Irrigation and Greenhouse Gas Emissions: A Review of Field-Based Studies

et al. 2020

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“…In relation to continuous flooding irrigation, the intermittent irrigation reduced seasonal CH 4 emissions by 47%, and increased N 2 O emissions by 876% in the Brazil paddy fields [35]. Midseason drainage significantly reduced seasonal CH 4 fluxes of paddy fields in South Korea by 50-53%, but significantly increased N 2 O flux by 20-37% over conventional flooding [36]. Irrigation techniques had no significant effect on GHG regulation due to the main part of GHGs in this study being to uptake CO 2 .…”

Section: Ghg Regulation and Its Economic Valuesmentioning

confidence: 99%

The Economic Value of Gas Exchange in a Paddy Field Ecosystem Using Water-Saving Irrigation

ShiHong¹,

Xiao²,

Junzeng³

2018

Pol. J. Environ. Stud.

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Although the main function of rice fields is to produce rice, they also provide a range of other ecosystem services [1], including O 2 production, CO 2 reduction, summer temperature cooling, flood mitigation, and so on [2]. Meanwhile, paddy fields have a negative effect on the environment through greenhouse gas emissions and agricultural non-point pollution [3-4]. Much literature has evaluated these ecosystem services by rice paddies, and these results show that rice fields provide more positive values in maintaining the sustainability of a regional or even global ecosystem [5-7]. Ecosystem services have been recognized throughout the rice-growing world and been considered in agricultural policy-making [8-9].

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“…In the modern agricultural industry, rice yields and environmental impacts have to be evaluated simultaneously when determining the appropriate soil management strategy [13]. More environmentally friendly agricultural systems are being explored that results in higher rice productivity for food security and with lower net GWP and GHGI [14]. For example, the presence of frogs, ducks, and fish can reduce the occurrence of diseases, pests, and weeds in rice fields [15,16].…”

Section: Introductionmentioning

confidence: 99%

Effects of Integrated Rice-Frog Farming on Paddy Field Greenhouse Gas Emissions

Fang

Dai

et al. 2019

IJERPH

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Integrated rice-frog farming (IRFF), as a mode of ecological farming, is fundamental in realizing sustainable development in agriculture. Yet its production of greenhouse gas (GHG) emissions remains unclear. Here, a randomized plot field experiment was performed to study the GHG emissions for various farming systems during the rice growing season. The farming systems included: conventional farming (CF), green integrated rice-frog farming (GIRF), and organic integrated rice-frog farming (OIRF). Results indicate that the cumulative methane (CH4) emissions from the whole growth period were divergent for the three farming systems, with OIRF having the highest value and CF having the lowest. For nitrous oxide (N2O) emissions, the order is reversed. IRFF significantly increased the dissolved oxygen (DO), soil redox potential (Eh), total organic carbon (TOC) content, and soil C:N ratio, which is closely related to GHG emissions in rice fields. Additionally, the average emissions of carbon dioxide (CO2) from soils during rice growing seasons ranged from 2312.27 to 2589.62 kg ha−1 and showed no significant difference in the three treatments. Rice yield in the GIRF and OIRF were lower (2.0% and 16.7%) than the control. The CH4 emissions contributed to 83.0–96.8% of global warming potential (GWP). Compared to CF, the treatment of GIRF and OIRF increased the GWP by 41.3% and 98.2% during the whole growing period of rice, respectively. IRFF significantly increased greenhouse gas intensity (GHGI, 0.79 kg CO2-eq ha−1 grain yield), by 91.1% over the control. Compared to the OIRF, GIRF decreased the GHGI by approximately 39.4% (0.59 kg CO2-eq ha−1 grain yield), which was 44.2% higher than that of the control. The results of structural equation model showed that the contribution of fertilization to CH4 emissions in paddy fields was much greater than that of frog activity. Moreover, frog activity could decrease GWP by reducing CH4 emissions from rice fields. And while GIRF showed a slight increase in GHG emissions, it could still be considered as a good strategy for providing an environmentally-friendly option in maintaining crop yield in paddy fields.

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Comparison of net global warming potential between continuous flooding and midseason drainage in monsoon region paddy during rice cropping

Cited by 55 publications

References 58 publications

Irrigation and Greenhouse Gas Emissions: A Review of Field-Based Studies

Irrigation and Greenhouse Gas Emissions: A Review of Field-Based Studies

The Economic Value of Gas Exchange in a Paddy Field Ecosystem Using Water-Saving Irrigation

Effects of Integrated Rice-Frog Farming on Paddy Field Greenhouse Gas Emissions

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