Enhanced UV-B radiation reduced soil-soybean ecosystem respiration and nitrous oxide emissions

Hu, Zhenghua; Jiang, Jingyan; Chen, Shutao; Liu, Qiaohui; Niu, Chuan-po

doi:10.1007/s10705-009-9313-4

Cited by 6 publications

(4 citation statements)

References 27 publications

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“…Yang and Cai et al, 2005;Almara et al, 2009;Hu et al, 2010). However, the maximum fluxes (93-3456 µg N m -2 h -1 ) in the present study were outside the corresponding ranges by a significant increasing trend of air temperature, especially in winter, and variations in the probability distribution features of extreme daily rainfall (Qian and Lin, 2005).…”

Section: Effect Of Soybean Growth On Soil N 2 O Emissioncontrasting

confidence: 54%

“…In China, have been intensively documented (Liu et al, 2011), but only limited information is available for soybean and legume crops. The N 2 O fluxes from a soybean field have been reported for a spring-sown soybean field in northeast China and a summer-sown soybean field in eastern China (Hu et al, 2010). The effects of enhanced UV-B radiation, straw addition, nitrogen fixation and production of N 2 O emissions from soybean and legume fields have also been studied (Zhong et al, 2009;Hu et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…The N 2 O fluxes from a soybean field have been reported for a spring-sown soybean field in northeast China and a summer-sown soybean field in eastern China (Hu et al, 2010). The effects of enhanced UV-B radiation, straw addition, nitrogen fixation and production of N 2 O emissions from soybean and legume fields have also been studied (Zhong et al, 2009;Hu et al, 2010). However, these studies are conducted over the short term (i.e., from a few days to a growing season) and information about long-term N 2 O fluxes from soybean fields is still lacking.…”

Section: Introductionmentioning

confidence: 99%

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Nitrous oxide emissions from black soils under a continuous soybean cropping system in northeast China

Chen

Wang

Zhao

et al. 2015

J. Soil Sci. Plant Nutr.

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A large number of natural wetlands in northeast China have been reclaimed as farmland in the last few decades, and soybean is the main rain-fed crop here. For the depth understanding of nitrous oxide (N 2 O) emission from reclaimed soybean fields, using static opaque chamber method, we conducted a four-year N 2 O flux measurement at two adjacent soybean fields cultivated after wetland drainage in 1987 and 1993, respectively, in the Sanjiang Plain of northeast China Using static opaque chamber method,. Both sites had two treatments including soybean cropped and bare soils (i.e., SF87, BS87, SF93 and BS93). The results showed that soil N 2 O emission from all of the plots was severely inhibited by the low temperature in winter (November to March), while a N 2 O emission pulse occurred during the spring thaw (April and May). Temporal variation of the N 2 O fluxes during the growing season varied over all the four years but was mainly affected by soil water-filled pore space (WFPS). Intense rainfall events increased the intensity and duration of N 2 O pulses during the growing season, and most high fluxes were occurred at WFPS > 45%. The mean annual N 2 O emission from all treatments over four years was 4.8 ± 1.2 kg N ha -1 (ranges: 1.9-19.8), and one third of the emission originated from the spring-thaw. In addition, soybean growth did not increase N 2 O emissions during the growing season, which support the cancellation of N 2 O emission calculations from nitrogen fixed by legumes in the 2006 IPCC Guidelines for National Greenhouse Gas Inventories.

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Section: Effect Of Soybean Growth On Soil N 2 O Emissioncontrasting

confidence: 54%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Nitrous oxide emissions from black soils under a continuous soybean cropping system in northeast China

Chen

Wang

Zhao

et al. 2015

J. Soil Sci. Plant Nutr.

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“…To the best of our knowledge, only Hu et al (2010aHu et al ( , 2010b and Chen et al (2011) have documented the effects of UV-B on the respiration and N 2 O emissions from winter wheat and soybean ecosystems.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of soil CO2 fluxes and N2O emission in a winter wheat ecosystem under enhanced UV-B radiation

Hu¹

2012

Afr. J. Agric. Res.

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Field experiments were conducted during the 2007 to 2008 winter wheat-growing season to investigate the influence of enhanced UV-B radiation on diurnal variations in soil CO 2 fluxes and nitrous oxide (N 2 O) emissions from a winter wheat ecosystem. CO 2 and N 2 O fluxes were measured by static opaque chamber-gas chromatograph technique. Results showed that on sunny days, soil CO 2 fluxes and N 2 O emissions from the soil-wheat system exhibited obvious diurnal variation patterns, which enhanced UV-B radiation. During the jointing, booting, and heading stages, enhanced UV-B radiation significantly decreased the mean diurnal CO 2 fluxes of the soil by 49.62% (p = 0.000), 50.39% (p = 0.004) and 51.44% (p = 0.022), respectively. Enhanced UV-B radiation also reduced the mean diurnal N 2 O fluxes (MNF) of the soil-wheat system by 48.35% (p = 0.017) and soil MNF by 36.87% (p = 0.027) during the grain-filling stage. Our findings suggested that enhanced UV-B radiation did not change the diurnal variation patterns of soil CO 2 fluxes and N 2 O emissions from the soil-wheat system, but influenced mean diurnal CO 2 and N 2 O fluxes.

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Interactive effects of elevated ozone and UV-B radiation on soil nematode diversity

Bao

Hua

et al. 2013

Ecotoxicology

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Ultraviolet-B (UV-B) radiation and elevated tropospheric ozone may cause reductions in the productivity and quality of important agricultural crops. However, research regarding their interactive effect is still scarce, especially on the belowground processes. Using the open top chambers experimental setup, we monitored the response of soil nematodes to the elevated O3 and UV-B radiation individually as well as in combination. Our results indicated that elevated O3 and UV-B radiation have impact not only on the belowground biomass of plants, but also on the community structure and functional diversity of soil nematodes. The canonical correspondence analysis suggested that soil pH, shoot biomass and microbial biomass C and N were relevant parameters that influencing soil nematode distribution. The interactive effects of elevated O3 and UV-B radiation was only observed on the abundance of bacterivores. UV-B radiation significantly increased the abundance of total nematodes and bacterivores in comparison with the control at pod-filling stage of soybean. Following elevated O3, nematode diversity index decreased and dominance index increased relative to the control at pod-filling stage of soybean. Nematode functional diversity showed response to the effects of elevated O3 and UV-B radiation at pod-bearing stage. Higher enrichment index and lower structure index in the treatment with both elevated O3 and UV-B radiation indicated a stressed soil condition and degraded soil food web. However, the ratios of nematode trophic groups suggested that the negative effects of elevated O3 on soil food web may be weakened by the UV-B radiations.

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Enhanced UV-B radiation reduced soil-soybean ecosystem respiration and nitrous oxide emissions

Cited by 6 publications

References 27 publications

Nitrous oxide emissions from black soils under a continuous soybean cropping system in northeast China

Nitrous oxide emissions from black soils under a continuous soybean cropping system in northeast China

Characteristics of soil CO2 fluxes and N2O emission in a winter wheat ecosystem under enhanced UV-B radiation

Interactive effects of elevated ozone and UV-B radiation on soil nematode diversity

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