Annual nitrous oxide emissions from open-air and greenhouse vegetable cropping systems in China

Liu, Qiaohui; Qin, Yan; Zou, Jianwen; Guo, Yanqin; Gao, Zhiliang

doi:10.1007/s11104-013-1622-3

Cited by 49 publications

(34 citation statements)

References 34 publications

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“…Our background N 2 O emission is comparable to the preliminary estimate of 3.66-4.24 kg N ha −1 yr −1 for Japanese tea fields (Akiyama et al, 2006), but it is relatively low, compared to the reported value of 7.1 kg N ha −1 yr −1 for another tea field in the Chinese subtropical region (Fu et al, 2012). Nevertheless, these background N 2 O emissions revealed by present and previous studies in tea plantations are generally higher than those estimates for cereal grain croplands (ranging from 0.1 to 3.67 kg N ha −1 yr −1 , with a mean of 1.35 kg N ha −1 yr −1 , Gu et al, 2007) and vegetable fields (1.1-2.7 kg N ha −1 yr −1 , Wang et al, 2011;Liu et al, 2013) in China, or the recommended default value of 1 kg N ha −1 yr −1 by IPCC (IPCC, 2006). Similarly, our mean background NO emission from tea plantations is greater, relative to cereal grain croplands (0.2-0.9 kg N ha −1 yr −1 , Yao et al, 2013;Yan et al, 2015) and vegetable fields (0.2-0.8 kg N ha −1 yr −1 , Yao et al, 2015) in China.…”

Section: Background N 2 O and No Emissions And Direct Emission Factorcontrasting

confidence: 68%

Organically fertilized tea plantation stimulates N<sub>2</sub>O emissions and lowers NO fluxes in subtropical China

et al. 2015

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Abstract. Tea plantations are rapidly expanding in China and other countries in the tropical and subtropical zones, but so far there are very few studies including direct measurements of nitrogenous gas fluxes from tea plantations. On the basis of 2-year field measurements from 2012 to 2014, we provided an insight into the assessment of annual nitrous oxide (N 2 O) and nitric oxide (NO) fluxes from Chinese subtropical tea plantations under three practices of conventional urea application, alternative oilcake incorporation and no nitrogen fertilization. Clearly, the N 2 O and NO fluxes exhibited large intra-and inter-annual variations, and furthermore, their temporal variability could be well described by a combination of soil environmental factors including soil mineral N, water-filled pore space and temperature, based on a revised "hole-in-the-pipe" model. Averaged over a 2-year study, annual background N 2 O and NO emissions were approximately 4.0 and 1.6 kg N ha −1 yr −1 , respectively. Compared to no nitrogen fertilization, both urea and oilcake application significantly stimulated annual N 2 O and NO emissions, amounting to 14.4-32.7 kg N 2 O-N ha −1 yr −1 and at least 12.3-19.4 kg NO-N ha −1 yr −1 , respectively. In comparison with conventional urea treatment, on average, the application of organic fertilizer significantly increased N 2 O emission by 71 % but decreased NO emission by 22 %. Although the magnitude of N 2 O and NO fluxes was substantially influenced by the source of N, the annual direct emission factors of N fertilizer were estimated to be 2.8-5.9, 2.7-4.0 and 6.8-9.1 % for N 2 O, NO and N 2 O+NO, respectively, which are significantly higher than those defaults for global upland croplands. This indicated that the rarely determined N 2 O and NO formation appeared to be a significant pathway in the nitrogen cycle of tea plantations, which are a potential source of national nitrogenous gases inventory.

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Section: Background N 2 O and No Emissions And Direct Emission Factorcontrasting

confidence: 68%

Organically fertilized tea plantation stimulates N<sub>2</sub>O emissions and lowers NO fluxes in subtropical China

et al. 2015

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“…), ranging from 0.044 to 0.17 mg N m −2 h −1 . These values were similar to the results from other studies in China (Table ) . The N 2 O emissions could be primarily attributed to the denitrification of high amounts of residual nitrate in the solar greenhouses .…”

Section: Discussionsupporting

confidence: 90%

“…). These values were much higher than those from the SG greenhouses and other studies (Table , with an average of 0.40 mg N m −2 h −1 ) . In addition, the total N 2 O emissions from the SG‐CM and SG‐SM greenhouses were more than 10 times higher than those from the SG greenhouses (Table ).…”

Section: Discussionmentioning

confidence: 56%

“…Nitrous oxide (N 2 O) accounted for 5.0% (2.6 Tg) of the total annual anthropogenic greenhouse gas (GHG) emissions in 2010 1 and has led to the depletion of the stratospheric ozone depth . It has been widely documented that vegetable systems have significantly contributed to the N 2 O emissions in China, where the cultivated vegetable area accounts for 45% of the world's total and occupied 12.7% of all Chinese cultivated land in 2013 . The proportion of this land occupied by solar greenhouses (framed structures enclosed on all sides with polythene film or glass panes) is large and has expanded dramatically over the past two decades.…”

Section: Introductionmentioning

confidence: 99%

“…However, in solar greenhouses, many specific practices are used including polythene film mulching, fertigation, frequent irrigation, high air and soil temperatures, high chemical N fertilizers and organic manure inputs, etc., which are very different from those of open‐air vegetable fields. Although some studies have investigated the N 2 O emissions from greenhouses during the vegetable growing season, there is a lack of research on N 2 O emissions during the summer fallow period (usually from June to August) in Northern China. Moreover, the following factors and practices drive the N 2 O emissions during the summer fallow: (i) high residual N in solar greenhouse soils, (ii) manure application, (iii) tillage, (iv) high rainfall, and (v) enclosure on all sides of a greenhouse with polythene film (Fig.…”

Section: Introductionmentioning

confidence: 99%

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Nitrous oxide emissions from solar greenhouses during summer fallow in the Loess Plateau of China

Liu

Qiu

2015

Greenhouse Gases

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In Northern China, vegetables are usually grown in solar greenhouses using intensive fertilization and cultivation, which produces significant greenhouse gas (GHG) emissions to the atmosphere. In this study, the nitrous oxide (N2O) emissions from 12 solar greenhouses with different fertilization practices (without manure application (SG); with chicken (SG‐CM) or swine (SG‐SM) manure application) were measured in the southern Loess Plateau of China during the summer fallow (35–61 days) in 2013 and 2014. The daily N2O fluxes varied over the ranges of 0.002–0.041, 0.014–12.58, and 0.005–8.41 mg N m−2 h−1 with averages of 0.037, 0.81, and 1.70 mg N m−2 h−1 in the SG, SG‐CM, and SG‐SM greenhouses, respectively, and the total N2O emissions were 1.17, 12.0, and 16.0 kg N ha−1, respectively. Significantly high peak N2O emissions were observed at the beginning of the summer fallow and after manure application, accounting for more than 80% of the total N2O emissions. The management practices of polythene removal, greenhouse enclosure for a week, and tillage also significantly increased the N2O daily fluxes and total emissions. Linear regression analyses showed that soil moisture and manure application were the main factors controlling the N2O emissions during summer fallow, followed by the residual mineral N in the soil. The results indicated that solar greenhouses cause high N2O emissions during summer fallow and farmers should use appropriate measures to mitigate these emissions. © 2015 Society of Chemical Industry and John Wiley & Sons, Ltd

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Enhancing the soil and water assessment tool model for simulating N ₂ O emissions of three agricultural systems

Yang

Abraha

Grosso

et al. 2017

Ecosyst Health Sustain

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Nitrous oxide (N 2 O) is a potent greenhouse gas (GHG) contributing to global warming, with the agriculture sector as the major source of anthropogenic N 2 O emissions due to excessive fertilizer use. There is an urgent need to enhance regional-/watershed-scale models, such as Soil and Water Assessment Tool (SWAT), to credibly simulate N 2 O emissions to improve assessment of environmental impacts of cropping practices. Here, we integrated the DayCent model's N 2 O emission algorithms with the existing widely tested crop growth, hydrology, and nitrogen cycling algorithms in SWAT and evaluated this new tool for simulating N 2 O emissions in three agricultural systems (i.e., a continuous corn site, a switchgrass site, and a smooth brome grass site which was used as a reference site) located at the Great Lakes Bioenergy Research Center (GLBRC) scale-up fields in southwestern Michigan. These three systems represent different levels of management intensity, with corn, switchgrass, and smooth brome grass (reference site) receiving high, medium, and zero fertilizer application, respectively. Results indicate that the enhanced SWAT model with default parameterization reproduced well the relative magnitudes of N 2 O emissions across the three sites, indicating the usefulness of the new tool (SWAT-N 2 O) to estimate long-term N 2 O emissions of diverse cropping systems. Notably, parameter calibration can significantly improve model simulations of seasonality of N 2 O fluxes, and explained up to 22.5%-49.7% of the variability in field observations. Further sensitivity analysis indicates that climate change (e.g., changes in precipitation and temperature) influences N 2 O emissions, highlighting the importance of optimizing crop management under a changing climate in order to achieve agricultural sustainability goals.Citation: Yang, Q., X. Zhang, M. Abraha, S. Del Grosso, G. P. Robertson, and J. Chen. 2017. Enhancing the soil and water assessment tool model for simulating N 2 O emissions of three agricultural systems. Ecosystem Health and Sustainability 3(2):e01259.

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Annual nitrous oxide emissions from open-air and greenhouse vegetable cropping systems in China

Cited by 49 publications

References 34 publications

Organically fertilized tea plantation stimulates N<sub>2</sub>O emissions and lowers NO fluxes in subtropical China

Organically fertilized tea plantation stimulates N<sub>2</sub>O emissions and lowers NO fluxes in subtropical China

Nitrous oxide emissions from solar greenhouses during summer fallow in the Loess Plateau of China

Enhancing the soil and water assessment tool model for simulating N ₂ O emissions of three agricultural systems

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Annual nitrous oxide emissions from open-air and greenhouse vegetable cropping systems in China

Cited by 49 publications

References 34 publications

Organically fertilized tea plantation stimulates N&lt;sub&gt;2&lt;/sub&gt;O emissions and lowers NO fluxes in subtropical China

Organically fertilized tea plantation stimulates N&lt;sub&gt;2&lt;/sub&gt;O emissions and lowers NO fluxes in subtropical China

Nitrous oxide emissions from solar greenhouses during summer fallow in the Loess Plateau of China

Enhancing the soil and water assessment tool model for simulating N 2 O emissions of three agricultural systems

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Organically fertilized tea plantation stimulates N<sub>2</sub>O emissions and lowers NO fluxes in subtropical China

Organically fertilized tea plantation stimulates N<sub>2</sub>O emissions and lowers NO fluxes in subtropical China

Enhancing the soil and water assessment tool model for simulating N ₂ O emissions of three agricultural systems