Maize and rice double cropping benefits carbon footprint and soil carbon budget in paddy field

Sun, Meng; Zhan, Mei; Zhao, Ming; Tang, Lihua; Qin, Mingguang; Cao, Cougui; Cai, Mingli; Jiang, Yanbin; Liu, Z.H.

doi:10.1016/j.fcr.2019.107620

Cited by 28 publications

(16 citation statements)

References 62 publications

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“…Similarly, Chen et al (2020) showed that the CF for DR was 12.17% higher than RW, mainly attributed to higher CH 4 field emission of DR. Xu et al (2022) indicated that the RR system reduced average annual CF by 27.37% compared with the DR system, which may be due to the annual CF of the second season in RR was significantly lower than that of DR. Therefore, it demonstrated the possibility of rational selection of cultivation mode to balance yield and footprint impact, which is consistent with many previous studies ( Ali et al, 2012 ; Cha-un et al, 2017 ; Sun et al, 2019 ).…”

Section: Discussionsupporting

confidence: 90%

“… Liu et al (2020d) reported a higher CF in southern China mainly because of more intensive machinery operation and extensive use of plastic films. A significantly higher CF in a DR system reported by Sun et al (2019) possibly attributed to the adoption of higher emission factors of agricultural inputs. Results from this study are higher than the research by Cheng et al (2015) , since their calculation of CH 4 and N 2 O were based on lower statistical data and emission coefficients.…”

Section: Discussionmentioning

confidence: 89%

“…Many previous studies have reported the CF or NF of DR separately ( Sun et al, 2019 ; Jiang et al, 2020 ; Zhang and Xu, 2021 ), Chen et al (2020) proposed that CF of DR in China was lower than RW, while NF was higher than RW. Xu et al (2022) suggested that the conversion of DR to RR in central China could reduce CF.…”

Section: Introductionmentioning

confidence: 99%

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Shifting Rice Cropping Systems Mitigates Ecological Footprints and Enhances Grain Yield in Central China

et al. 2022

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Intensive cereal production has brought about increasingly serious environmental threats, including global warming, environmental acidification, and water shortage. As an important grain producer in the world, the rice cultivation system in central China has undergone excessive changes in the past few decades. However, few articles focused on the environmental impacts of these shifts from the perspective of ecological footprints. In this study, a 2-year field trial was carried out in Hubei province, China, to gain insight into carbon footprint (CF), nitrogen footprint (NF), and water footprint (WF) performance. The three treatments were, namely, double-rice system (DR), ratoon rice system (RR), and rice-wheat system (RW). Results demonstrated that RR significantly increased the grain yield by 10.22–15.09% compared with DR, while there was no significant difference in the grain yield between RW and DR in 2018–2019. All of the calculation results by three footprint approaches followed the order: RR < RW < DR; meanwhile, RR was always significantly lower than DR. Methane and NH3 field emissions were the hotspots of CF and NF, respectively. Blue WF accounts for 40.90–42.71% of DR, which was significantly higher than that of RR and RW, primarily because DR needs a lot of irrigation water in both seasons. The gray WF of RW was higher than those of DR and RR, mainly due to the higher application rate of N fertilizer. In conclusion, RR possesses the characteristics of low agricultural inputs and high grain yield and can reduce CF, NF, and WF, considering the future conditions of rural societal developments and rapid demographic changes; we highlighted that the RR could be a cleaner and sustainable approach to grain production.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 89%

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Shifting Rice Cropping Systems Mitigates Ecological Footprints and Enhances Grain Yield in Central China

et al. 2022

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“…This can be a good option to alternative plastic film and worth futher study for agricultural sustainable development and environmental protection. In addition, although the study and some others similar studies accomplished over a 2-years period 49 – 51 , some studies are more than 2 years, such as 4 or 6 years 1 , 20 , to reduce the effect of weather variability from year to year on crop growth, yield, irrigation and energy budget, carbon footprint 1 , 20 . Thus, this study needs to be conducted over a long period of time for further refine the results.…”

Section: Discussionmentioning

confidence: 95%

Energy budget and carbon footprint in a wheat and maize system under ridge furrow strategy in dry semi humid areas

2021

Sci Rep

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The well-irrigated planting strategy (WI) consumes a large amount of energy and exacerbates greenhouse gas emissions, endangering the sustainable agricultural production. This 2-year work aims to estimate the economic benefit, energy budget and carbon footprint of a wheat–maize double cropping system under conventional rain-fed flat planting (irrigation once a year, control), ridge–furrows with plastic film mulching on the ridge (irrigation once a year, RP), and the WI in dry semi-humid areas of China. Significantly higher wheat and maize yields and net returns were achieved under RP than those under the control, while a visible reduction was found for wheat yields when compared with the WI. The ratio of benefit: cost under RP was also higher by 10.5% than that under the control in the first rotation cycle, but did not differ with those under WI. The net energy output and carbon output followed the same trends with net returns, but the RP had the largest energy use efficiency, energy productivity carbon efficiency and carbon sustainability among treatments. Therefore, the RP was an effective substitution for well–irrigated planting strategy for achieving sustained agricultural development in dry semi-humid areas.

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“…A higher abundance of mcrA gene was observed in DR mode than that in RW and RF modes (Fig. 4), which was possibly driven by nutrient availability (Cha-un et al, 2017;Sun et al, 2019) due to the different soil properties among various cropping modes. In theory, DR mode, a biannual rice cultivation mode, had higher residual carbon (stubble and root), organic acid remaining, and more favorable anaerobic conditions for methanogens in the soil.…”

Section: Effect On Methanogenic Communitiesmentioning

confidence: 96%

Differences in methanogenic pathways and methanogenic communities in paddy soils under three typical cropping modes

Shen

Huang

et al. 2022

Preprint

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Microbial methane (CH4) production and emission are various in different paddy fields. However, little is known about values of anaerobically produced δ13CH4, methanogenic pathways, and their dominant communities in different paddy soils. Through anaerobic incubation experiments and the stable carbon isotope with fluoromethane inhibitor method, CH4 production potential (MPP), the relative contribution of acetoclastic methanogenesis (fac), and the abundance and community composition of methanogens in paddy soils were measured under three typical cropping modes (Rice-Wheat, RW; Rice-Fallow, RF; Double-Rice, DR) in China. The results showed that MPP was 13.4 μg CH4 g–1 d–1 in DR soil, 23% and 46% higher than that in RW and RF soils, respectively. Moreover, RF soil had the highest produced δ13CH4 value (–43.9‰) and the lowest produced δ13CO2 value (–26.3‰). Based on the isotope fractionations associated with H2/CO2-dependent methanogenesis (1.049–1.062), fac values in RF soil (80–98%) were much higher than that in RW (39–60%) and DR (52–75%) soils. Compared to RF soil, mcrA gene abundance in RW and DR soils increased by 29% and 40%, respectively. Furthermore, the dominant methanogens in RF soil were Methanosarcina (acetoclastic methanogens) while Methanosarcina and Methanobacterium (hydrogenotrophic methanogens) were in RW and DR soils. Redundancy analysis revealed that soil pH and soil texture affected the community structure of methanogens. These findings suggest that differences in paddy MPP and methanogenic pathways under the three typical cropping modes might be caused by the changes in methanogenic abundance and community composition driven by soil pH.

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Maize and rice double cropping benefits carbon footprint and soil carbon budget in paddy field

Cited by 28 publications

References 62 publications

Shifting Rice Cropping Systems Mitigates Ecological Footprints and Enhances Grain Yield in Central China

Shifting Rice Cropping Systems Mitigates Ecological Footprints and Enhances Grain Yield in Central China

Energy budget and carbon footprint in a wheat and maize system under ridge furrow strategy in dry semi humid areas

Differences in methanogenic pathways and methanogenic communities in paddy soils under three typical cropping modes

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