Effects of warming and fertilization on paddy N2O emissions and ammonia volatilization

Deng, Xuzhe; Xu, Tingting; Xue, Lian; Hou, Pengfu; Xue, Lihong; Yang, Linzhang

doi:10.1016/j.agee.2023.108361

Cited by 13 publications

(4 citation statements)

References 51 publications

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“…These may further provide positive feedback to crop growth. On the other hand, the results indicated that warming tended to increase the soil pH, LOC and AN contents duo to the input and decomposition of dead ineffective tiller residue [ 29 , 30 ]. Generally, higher soil pH in acidic soil is beneficial in increasing the availability of electron acceptors and nutrient cycling, thus enhancing crop production [ 31 , 32 ].…”

Section: Discussionmentioning

confidence: 99%

“…In a green manure amendment experiment, Hou et al also highlighted the decisive role of soil LOC in paddy methane emissions [ 43 ]. In another study, Deng et al pointed out that the components of LOC (e.g., MBC, DOC) showed different responses to warming [ 30 ]. Hence, considering the critical role of soil LOC in paddy methane emissions, the response of SOC fractions to warming deserves attention in future research.…”

Section: Discussionmentioning

confidence: 99%

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Fertilization and Global Warming Impact on Paddy CH4 Emissions

Hou

Deng

Wang

et al. 2023

IJERPH

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Introduction: This study aimed to assess the influence of experimental warming and fertilization on rice yield and paddy methane emissions. Methods: A free-air temperature increase system was used for the experimental warming treatment (ET), while the control treatment used ambient temperature (AC). Each treatment contained two fertilization strategies, (i) normal fertilization with N, P and K fertilizers (CN) and (ii) without N fertilizer input (CK). Results: The yield was remarkably dictated by fertilization (p < 0.01), but not warming. Its value with CN treatment increased by 76.24% compared to CK. Also, the interactive effect of warming and fertilization on CH4 emissions was insignificant. The seasonal emissions from warming increased by 36.93% compared to AC, while the values under CN treatment increased by 79.92% compared to CK. Accordingly, the ET-CN treatment obtained the highest CH4 emissions (178.08 kg ha−1), notably higher than the other treatments. Also, the results showed that soil fertility is the main driver affecting CH4 emissions rather than soil microorganisms. Conclusions: Fertilization aggravates the increasing effect of warming on paddy methane emissions. It is a daunting task to optimize fertilization to ensure yield and reduce methane emissions amid global warming.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Fertilization and Global Warming Impact on Paddy CH4 Emissions

Hou

Deng

Wang

et al. 2023

IJERPH

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“…Deep fertilization transfers soil available nitrogen from the surface soil layer to the deep soil layer, reducing the NO 3 − -N and NH 4 + −N contents of the surface soil, while the humidity and aeration of the deep soil reduces N 2 O production [39]. In addition, the temperature of the deep soil is lower than that of the surface soil, but the temperature decrease is smaller, which can reduce N 2 O emissions [40] and NH 3 volatilization [41]. In addition to soil factors, D25 had the highest yield and biomass, while the increase in aboveground biomass and leaf area reduced the intensity of sunlight and air flow, thereby reducing NH 3 volatilization [42].…”

Section: Deep Fertilization Enhanced Soil Ch 4 Uptake and Decreased G...mentioning

confidence: 99%

Influence of the Depth of Nitrogen-Phosphorus Fertilizer Placement in Soil on Maize Yielding and Carbon Footprint in the Loess Plateau of China

Huang,

Wu,

Liu

et al. 2024

Agronomy

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Deep fertilization is a beneficial approach for reducing nitrogen losses. However, the effects of various fertilization depths on maize (Zea mays L.) productivity and environmental footprints have not been thoroughly understood. Therefore, a field experiment was conducted to investigate the effects of different fertilization depths of 5 cm (D5), 15 cm (D15), 25 cm (D25), and 35 cm (D35) on maize productivity and environmental footprints. Reactive nitrogen (Nr) losses and greenhouse gas (GHG) emissions were assessed using life cycle analysis. We hypothesized that deep fertilization can obtain lower carbon and nitrogen footprint. The results indicated that deep fertilization decreased the N2O and NH3 emissions while increasing the CH4 uptake. Compared with D5, D15 resulted in an increase in total GHG emissions and carbon footprint (CF), whereas D25 decreased by 13.0% and 23.6%, respectively. Compared with D5, the Nr losses under D15, D25, and D35 conditions was reduced by 11.3%, 17.3%, and 21.0%, respectively, and the nitrogen footprint (NF) was reduced by 16.0%, 27.4%, and 19.0%, respectively. The maize yield under D15 and D25 increased by 5.7% and 13.8%, respectively, compared with the D5 treatment, and the net economic benefits of the ecosystem increased by 7.1% and 17.1%, respectively. In summary, applying fertilizer at a depth of 25 cm can significantly reduce the environmental footprints and increase maize productivity, making it an effective fertilization strategy in the Loess Plateau region of China.

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“…14) 온도의 증가 및 암모니아의 농도가 증가함에 따라 암모니아의 휘발이 증가한다는 이전 연구 보고가 되었다. 15,16) Pelster 17) 는 초기 토양 수분함량에 따 라 암모니아 휘발이 증가함을 확인하였다. 암모니아 배출량 및 배출계수에 관한 연구가 많은 연구자에 의해 수행되어왔지 만 18,19,20) , 작물 종류와 비료 종류에 따라 암모니아 배출계수는 따로 산정되어야 하며, 토양 및 기후가 다른 국가별 암모니아 배출량을 보다 정확하게 평가하기 위해서는 정교하고 환경에 적합한 암모니아 배출량 평가가 필요하다.…”

Section: 이연진ㆍ임은채ㆍ홍성창ㆍ박성직unclassified

Characteristics of Ammonia Emissions from the use of Compost manure and Composite Fertilizer in Upland Field

Lee,

Im,

Hong

et al. 2023

J Korean Soc Environ Eng

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Objectives : This study aimed to monitor ammonia volatilization in upland fields under different nitrogen fertilizer applications, comparing compost manure (CM) and composite fertilizer (CF) and investigate the environmental factors influencing ammonia volatilization.Methods : Ammonia was collected using the static chamber method in upland fields, and the soil analyses were conducted before and after ammonia volatilization monitoring. Pearson's correlation analysis and machine learning were utilized to determine the relationship between ammonia volatilization and environmental factors. Growth characteristics of harvested crops were analyzed, and Duncan analysis confirmed significant differences between nitrogen fertilizer treatments.Results and Discussion : In both CM and CF fertilized fields, there was no significant difference in ammonia volatilization. However, more ammonia volatilization was observed in the potato field compared to the Chinese cabbage field, attributed to higher NH<sub>4</sub><sup>+</sup>-N content in the soil of the potato field. Machine learning identified soil temperature and moisture as significant factors affecting ammonia volatilization. The analysis of crop growth revealed a positive effect of increased nitrogen fertilizer application. The result showed that single CM application was insufficient to meet crop nutrient demands.Conclusion : This study quantified ammonia emissions, identified influencing factors, and provided valuable data for enhancing fertilizer use efficiency and nitrogen management strategies in agriculture.

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Effects of warming and fertilization on paddy N2O emissions and ammonia volatilization

Cited by 13 publications

References 51 publications

Fertilization and Global Warming Impact on Paddy CH4 Emissions

Fertilization and Global Warming Impact on Paddy CH4 Emissions

Influence of the Depth of Nitrogen-Phosphorus Fertilizer Placement in Soil on Maize Yielding and Carbon Footprint in the Loess Plateau of China

Characteristics of Ammonia Emissions from the use of Compost manure and Composite Fertilizer in Upland Field

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