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000902357 1001_ $$0P:(DE-HGF)0$$aZhang, Bowen$$b0
000902357 245__ $$aSoil type affects not only magnitude but also thermal sensitivity of N2O emissions in subtropical mountain area
000902357 260__ $$aAmsterdam [u.a.]$$bElsevier Science$$c2021
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000902357 520__ $$aIt is a concern whether the effect of soil type on N2O emissions has to be considered for regional mitigation strategies and emission estimates in mountainous areas with inherent spatial heterogeneities of soil type. To date, there were few field experiments which investigated soil type effects on N2O emissions. Thus a 2-year field study was conducted to measure N2O emissions and soil environmental variables from three different soils that were formed from similar parental rock under the same climate. Seasonal N2O fluxes ranged from 0.18 to 0.40 kg N ha−1 for wheat seasons and 0.40 to 1.50 kg N ha−1 for maize seasons across different experimental soils. The intra- and inter-annual variations in N2O emissions were mainly triggered by temporal dynamics of soil temperature and moisture conditions. On average, seasonal N2O fluxes for acidic soils were significantly lower than for neutral and alkaline soils in cold-dry wheat seasons while significantly greater than for neutral and alkaline soils in warm-wet maize seasons. These determined differences of N2O emissions were mainly caused by differences of initial soil properties across different soils. Moreover, seasonal N2O fluxes were positively correlated with soil pH in wheat seasons, but negatively correlated in maize seasons. The temperature sensitivity coefficient (Q10) of soil N2O emissions for acidic soil (4.06) were significantly greater than those for neutral (1.82) and alkaline (1.15) soils. Overall, N2O emissions for acidic soils were not only higher than those for neutral and alkaline soils but also more sensitive to changing temperature. The present study highlights that soil type is needed to be carefully considered for regional estimate and proposing mitigation strategy of N2O emissions especially in subtropical mountain regions with inherent great heterogeneity of soil type.
000902357 536__ $$0G:(DE-HGF)POF4-2173$$a2173 - Agro-biogeosystems: controls, feedbacks and impact (POF4-217)$$cPOF4-217$$fPOF IV$$x0
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000902357 7001_ $$0P:(DE-Juel1)166012$$aZhou, Minghua$$b1$$eCorresponding author
000902357 7001_ $$0P:(DE-HGF)0$$aZhu, Bo$$b2
000902357 7001_ $$0P:(DE-HGF)0$$aXiao, Qianying$$b3
000902357 7001_ $$0P:(DE-HGF)0$$aWang, Tao$$b4
000902357 7001_ $$0P:(DE-HGF)0$$aTang, Jialiang$$b5
000902357 7001_ $$0P:(DE-HGF)0$$aYao, Zhisheng$$b6
000902357 7001_ $$0P:(DE-HGF)0$$aKiese, Ralf$$b7
000902357 7001_ $$0P:(DE-HGF)0$$aButterbach-Bahl, Klaus$$b8
000902357 7001_ $$0P:(DE-Juel1)142357$$aBrüggemann, Nicolas$$b9
000902357 773__ $$0PERI:(DE-600)1498726-0$$a10.1016/j.scitotenv.2021.149127$$gVol. 797, p. 149127 -$$p149127 -$$tThe science of the total environment$$v797$$x0048-9697$$y2021
000902357 8564_ $$uhttps://juser.fz-juelich.de/record/902357/files/Zhang%20etal%202021%20%28Sci%20Tot%20Environ%20797%2C%20149127%29%20Postscript%20file.pdf$$yPublished on 2021-07-18. Available in OpenAccess from 2023-07-18.
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