Measurements of nitrous oxide emissions from vegetable production in China

Xiong, Zhengqin; Xie, Yuanchang; Xing, Guangxi; Zhu, Zhaoliang; Butenhoff, C. L.

doi:10.1016/j.atmosenv.2005.12.008

Cited by 99 publications

(68 citation statements)

References 23 publications

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“…The mean flux of N 2 O or NO during the experiment period is the average of all measured fluxes weighted by the interval between two neighboring measurements (Xiong et al, 2006).…”

Section: Measurement Of N 2 O No and Nhmentioning

confidence: 99%

“…As a result, great concern exists about excess N fertilizer application and low N use efficiency in intensive vegetable fields in China (Deng et al, 2013;Diao et al, 2013;Li et al, 2017). Meanwhile, intensive vegetable agriculture is considered to be an important source of N 2 O (Xiong et al, 2006;Jia et al, 2012;Li et al, 2015b;Zhang et al, 2015) and NO production ). Moreover, NH 3 volatilization is another important N pathway in fertilized soil, resulting in large losses of soil-plant N (Pacholski et al, 2008;Zhang et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Biochar reduces yield-scaled emissions of reactive nitrogen gases from vegetable soils across China

Fan

Chen

et al. 2017

Biogeosciences

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Abstract. Biochar amendment to soil has been proposed as a strategy for sequestering carbon, mitigating climate change and enhancing crop productivity. However, few studies have compared the general effect of different feedstock-derived biochars on the various gaseous reactive nitrogen emissions (GNrEs) of N 2 O, NO and NH 3 simultaneously across the typical vegetable soils in China. A greenhouse pot experiment with five consecutive vegetable crops was conducted to investigate the effects of two contrasting biochars, namely wheat straw biochar (B w ) and swine manure biochar (B m ) on GNrEs, vegetable yield and gaseous reactive nitrogen intensity (GNrI) in four typical soils which are representative of the intensive vegetable cropping systems across mainland China: an Acrisol from Hunan Province, an Anthrosol from Shanxi Province, a Cambisol from Shandong Province and a Phaeozem from Heilongjiang Province. Results showed that remarkable GNrE mitigation induced by biochar occurred in Anthrosol and Phaeozem, whereas enhancement of yield occurred in Cambisol and Phaeozem. Additionally, both biochars decreased GNrI through reducing N 2 O and NO emissions by 36.4-59.1 and 37.0-49.5 % for B w (except for Cambisol), respectively, and by improving yield by 13.5-30.5 % for B m (except for Acrisol and Anthrosol). Biochar amendments generally stimulated the NH 3 emissions with greater enhancement from B m than B w . We can infer that the biochar's effects on the GNrEs and vegetable yield strongly depend on the attributes of the soil and biochar. Therefore, in order to achieve the maximum benefits under intensive greenhouse vegetable agriculture, both soil type and biochar characteristics should be seriously considered before conducting large-scale biochar applications.

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“…The mean flux of N 2 O or NO during the experiment period is the average of all measured fluxes weighted by the interval between two neighboring measurements (Xiong et al, 2006).…”

Section: Measurement Of N 2 O No and Nhmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Biochar reduces yield-scaled emissions of reactive nitrogen gases from vegetable soils across China

Fan

Chen

et al. 2017

Biogeosciences

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“…The mean flux for one vegetable crop was calculated as the average of all measured fluxes. The measured fluxes were weighted by the interval between two measurements (Xiong et al, 2006). The cumulative seasonal N 2 O was calculated as the product of the mean flux and the seasonal duration.…”

Section: Measurements Of N 2 O Fluxes Soil Samples and Environmentalmentioning

confidence: 99%

“…Previous studies have shown that annual N fertilizer inputs are extremely high for certain intensively managed vegetable fields (Ju et al, 2006;Xiong et al, 2006;). These levels are almost 3-4 times the fertilizer levels used for nonvegetable crops in fields where two crops are grown per year (Zheng et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

The combined effects of nitrification inhibitor and biochar incorporation on yield-scaled N<sub>2</sub>O emissions from an intensively managed vegetable field in southeastern China

Fan

Xiong

et al. 2015

Biogeosciences

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Abstract. An experiment was conducted to study the influences of nitrification inhibitor (NI) and biochar incorporation on yield-scaled N 2 O using the static chamber method and gas chromatography in an intensively managed vegetable field with seven consecutive vegetable crops from 2012 to 2014 in southeastern China. With an equal annual nitrogen (N) application rate (1217 kg N ha −1 yr −1 ), six treatments under three biochar amendment rates -namely, 0 t ha −1 (C0), 20 t ha −1 (C1) and 40 t ha −1 (C2) -with compound fertilizer (CF) or urea mixed with NI of nitrapyrin as chlorinated pyridine (CP) were studied in these field experiments. The results showed that, although there was no significant influence on soil organic carbon (SOC) content or total nitrogen (TN), nitrapyrin could result in a significant increase in soil pH during the experimental period. Nitrapyrin significantly decreased cumulative N 2 O emissions by 15.9-32.1 % while increasing vegetable yield by 9.8-41.9 %. Thus, it also decreased yield-scaled N 2 O emissions significantly. In addition to the differential responses of the soil pH, biochar amendment significantly increased SOC and TN. Compared with the treatments without biochar addition, the cumulative N 2 O emissions showed no significant difference in the CF or the CP group treatments but increased slightly (not significantly) by 7.9-18.3 % in the CP group treatments. Vegetable yield was enhanced by 7.1-49.5 % in the CF group treatments compared with the treatments without biochar amendment, while there was no significant difference in the CP group treatments, and the yield-scaled N 2 O emissions were thus decreased significantly. Furthermore, treatments involving with nitrapyrin and biochar incorporation slightly increased yieldscaled N 2 O emissions by 9.4 %, on average, compared with CP-C0. Therefore, the application of nitrapyrin could serve as an appropriate practice for increasing vegetable yield and mitigating N 2 O emissions in intensively managed vegetable fields and should be further examined in various agroecosystems.

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“…However, so far there were few investigations conducted for Chinese vegetable fields (Xiong et al, 2006;Mu, 2006, 2007;Li and Wang, 2007). In China, vegetable field with a total area of 18.2 million ha, accounts for 11.5% of the total sown cropland area (Chinese Statistical Bureau, 2007).…”

mentioning

confidence: 99%

Nitric oxides and nitrous oxide fluxes from typical vegetables cropland in China: Effects of canopy, soil properties and field management

Pang

Lee

et al. 2009

Atmospheric Environment

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Measurements of nitrous oxide emissions from vegetable production in China

Cited by 99 publications

References 23 publications

Biochar reduces yield-scaled emissions of reactive nitrogen gases from vegetable soils across China

Biochar reduces yield-scaled emissions of reactive nitrogen gases from vegetable soils across China

The combined effects of nitrification inhibitor and biochar incorporation on yield-scaled N<sub>2</sub>O emissions from an intensively managed vegetable field in southeastern China

Nitric oxides and nitrous oxide fluxes from typical vegetables cropland in China: Effects of canopy, soil properties and field management

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Measurements of nitrous oxide emissions from vegetable production in China

Cited by 99 publications

References 23 publications

Biochar reduces yield-scaled emissions of reactive nitrogen gases from vegetable soils across China

Biochar reduces yield-scaled emissions of reactive nitrogen gases from vegetable soils across China

The combined effects of nitrification inhibitor and biochar incorporation on yield-scaled N&lt;sub&gt;2&lt;/sub&gt;O emissions from an intensively managed vegetable field in southeastern China

Nitric oxides and nitrous oxide fluxes from typical vegetables cropland in China: Effects of canopy, soil properties and field management

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The combined effects of nitrification inhibitor and biochar incorporation on yield-scaled N<sub>2</sub>O emissions from an intensively managed vegetable field in southeastern China