Fertilizer-induced nitrous oxide emissions from global orchards and its estimate of China

Xu, Pinshang; Li, Zhutao; Wang, Jinyang; Zou, Jianwen

doi:10.1016/j.agee.2022.107854

Cited by 22 publications

(8 citation statements)

References 55 publications

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“…The EF of different gaseous N varied significantly across crops and regions (Table 1). The mean EF of N2O emission in Chinese orchards was 1.2% (range: 0.7%-1.72%), which was slightly lower than the world average of 1.4% (0.84%-1.86%) [20,25,37] . The mean EF of N2O emission from Chinese vegetable fields was 0.85% (0.55%-1.7%), and notably lower than the world average of 1.4% (0.93%-2.4%) [17,35,[38][39][40][41][42]44,45] .…”

Section: Efs Of Reactive Gaseous Nmentioning

confidence: 66%

“…Similarly, the median N2O and NO emissions from Chinese vegetable fields were 3.6 kg• ha −1 N (5.8 ± 6.3 kg• ha −1 N) and 1.3 kg• ha −1 N (2.4 ± 4.5 kg• ha −1 N), significantly greater than the corresponding emissions of 1.2 kg• ha −1 N (2.9 ± 3.8 kg• ha −1 N; P < 0.001) and 0.65 kg• ha −1 N (1.2 ± 1.3 kg• ha −1 N; P < 0.001) in the rest of the world. These results suggest that Chinese orchards and vegetable cultivation are global hotspots for gaseous N emissions from the agricultural sector [20,30] . This is mainly attributed to the differences in agronomic management practices such as fertilizer application, irrigation, and tillage among different regions.…”

Section: Background Emissions and Fertilization-induced Gaseous N Emi...mentioning

confidence: 86%

“…We collected data on NH3, N2O, and NO emissions from OVT systems reported in synthesis and metaanalysis studies. Data on NH3 and N2O emissions from orchards were obtained from two recent synthesis studies [20,25] . Data on NH3 emissions from orchards and vegetables were obtained from a database used for an empirical model analysis [26] .…”

Section: Methodsmentioning

confidence: 99%

“…A high N surplus usually means an increased potential loss of N from agricultural soils to the environment, leading to a lower N use efficiency. A growing body of experimental evidence indicates that the intensities of gaseous reactive N emissions, especially N2O and NO, from soils grown in OVT are generally greater than from cereal cropping systems [17][18][19][20][21][22][23][24] . Therefore, a better understanding of the characteristics of gaseous reactive N emissions from intensive cash crop cultivation and its contribution to the agricultural sector is an essential step toward the green development of agriculture.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Gaseous Reactive Nitrogen Losses From Orchards, Vegetables and Tea Plantations

2022

Front. Agr. Sci. Eng.

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Section: Efs Of Reactive Gaseous Nmentioning

confidence: 66%

Section: Background Emissions and Fertilization-induced Gaseous N Emi...mentioning

confidence: 86%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Gaseous Reactive Nitrogen Losses From Orchards, Vegetables and Tea Plantations

2022

Front. Agr. Sci. Eng.

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“…On the one hand, latosolic red soil has a strong phosphate-fixing capacity because of its high concentrations of Fe 2 O 3 (5.06-17.49%) and Al 2 O 3 (28.17-37.76%) [18,21], contributing to the build-up of the soil P pool. On the other hand, excessive chemical fertilizers were usually applied to rice, vegetables and the fruit trees to gain higher yields and profits, and inevitably resulted in the accumulations of P in soil [22][23][24]. According to the statistical data for Guangdong Province [25], phosphate fertilizer applied to farmland reached 485,400 tons in 2020, which is 3.2 times of that of 1980.…”

Section: Discussionmentioning

confidence: 99%

Characteristics of Organic Phosphorus Pool in Soil of Typical Agriculture Systems in South China

Jian-wu

Zeng

et al. 2022

Horticulturae

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Organic phosphorus (P) is an important potential source of plant P nutrition in agro-ecosystems. It was hypothesized that the soil organic P pools were distinguished one from another by different land-utilization patterns. A total of 38 sites were sampled, to clarify the organic P pool and its distribution in paddy fields, vegetable fields, and orchards. Soil organic P fractions, including labile organic P (LOP), moderately labile organic P (MLOP), moderately resistant organic P (MROP) and highly resistant organic P (HROP) were examined. Results showed that the soil total P (TP) and available P (AP) concentration have enhanced by 138% and 1559%, respectively, over the last four decades. The soil total organic P (TOP) accounted for 21.4% of the TP pool. Soil MLOP dominated the organic P reservoir, irrespective of land-planting pattern. Soil organic P fractions ranked as MLOP > MROP > HROP > LOP. The highest accumulations of TP, AP and TOP were in the vegetable fields, followed by orchards and paddy fields. The vegetable fields had higher LOP and MLOP levels than those of the paddy fields and orchards, whereas the paddy fields exhibited higher concentrations of MROP, and HROP. Soil pH, organic matter and available nitrogen all contributed to the buildup of the organic P pool. It was suggested that soil organic P should be considered preferentially in the management of the plant P nutrient in regional planting systems.

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Does replacing chemical fertilizer with ryegrass (Lolium multiflorum Lam.) mitigate CH4 and N2O emissions and reduce global warming potential from paddy soil?

Yang

Yao

et al. 2022

Plant Soil

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The incorporation of ryegrass (Lolium multi orum Lam.; RG), a winter grass manure, could partly replace chemical N and reduce N loss during the succeeding rice seasons, but little is known about its impact on greenhouse gas emission. This study investigated the effect of different RG-urea substitution ratios (0%, 25%, 50%, 75% and 100%) on C and N release, CH 4 and N 2 O emissions in a paddy soil.(Methods) Gas samples for CH 4 and N 2 O uxes measurement were collected by using a closed chamber and determined by chromatograph method. C and N release from the incorporated RG residue were tested by a mesh bag method.(Results) C and N release from RG followed a single exponential decay model, with 95.5%-97.8% of the original C and 98.7%-99.3% of N released during 192 days. RG-urea substitution ratio increased CH 4 emission, but was negatively correlated with N 2 O emission. In comparison with 0% substitution, global warming potential (GWP) and greenhouse gas intensity (GHGI) were not signi cantly different for the 25% and 50% RG substitutions, but were signi cantly higher for the 75% and 100% substitutions (P<0.05). Soil redox, C and N remaining in litter residue were key characteristics explaining CH 4 emission, while NH 4 + -N and NO 3 --N concentrations were correlated with the variation of N 2 O emission. (Conclusion)The increased CH 4 emission by RG incorporation could be offset by the reduced N 2 O emission when RGurea substitution ratio was 50% or less.

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Fertilizer-induced nitrous oxide emissions from global orchards and its estimate of China

Cited by 22 publications

References 55 publications

Gaseous Reactive Nitrogen Losses From Orchards, Vegetables and Tea Plantations

Gaseous Reactive Nitrogen Losses From Orchards, Vegetables and Tea Plantations

Characteristics of Organic Phosphorus Pool in Soil of Typical Agriculture Systems in South China

Does replacing chemical fertilizer with ryegrass (Lolium multiflorum Lam.) mitigate CH4 and N2O emissions and reduce global warming potential from paddy soil?

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