Soil moisture effects on gross nitrification differ between adjacent grassland and forested soils in central Alberta, Canada

Cheng, Yi; Cai, Zucong; Zhang, Jinbo; Lang, Man; Mary, Bruno; Chang, Scott X.

doi:10.1007/s11104-011-0997-2

Cited by 30 publications

(14 citation statements)

References 40 publications

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“…In addition, the measured rates of GNM were much higher than the net N mineralization rates from other estuarine and coastal marine ecosystems (Table S2) [ Billen , ; Boynton et al , ; Jensen et al , ; Rysgaard et al , ], probably showing high N regeneration rates in the study area. Meanwhile, GAI rates determined in this study were comparable with those from other ecosystems (Table S2) [ Corre et al , ; Accoe et al , ; Luxhøi et al , ; Jin et al , ; Cheng et al , ; Zhu et al , ]. We also found that both GNM and GAI rates were strongly interrelated throughout the study area ( p < 0.05; Figure ), which was consistent with the findings of previous studies [ Corre et al , ; Bengtsson et al , ; Zhu et al , ] for wetland, grassland, forest, and agriculture ecosystems.…”

Section: Discussionsupporting

confidence: 92%

Nitrogen mineralization and immobilization in sediments of the East China Sea: Spatiotemporal variations and environmental implications

et al. 2016

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Nitrogen (N) mineralization and immobilization are important processes of N biogeochemical cycle in marine sediments. This study investigated gross N mineralization (GNM) and NH4+ immobilization (GAI) in the sediments from the East China Sea (ESC), using 15N stable isotope dilution technique. Results show that measured rates of GNM and GAI ranged from 0.04 to 6.1 µg N g−1 d−1 and from undetectable to 9.82 µg N g−1 d−1, respectively. In general, both GNM and GAI rates were significantly greater in summer as compared to winter, and the high rates occurred mainly in the muddy area and increased gradually from the Yangtze Estuary to Zhe‐Min Coastal muddy areas. The GNM and GAI processes were related closely to sediment temperature, pH, ammonium (NH4+), nitrate (NO3−), total organic carbon (TOC), and total nitrogen (TN) contents in the muddy area, while they were associated tightly with sediment temperature, pH, NH4+, TOC, TN, sulfide, and Fe(III) concentrations in the sandy area. In addition, the total mineralized and immobilized N in the East China Sea (ECS) were estimated to be approximately 2.1 × 106 t N yr−1 and 2.7 × 106 t N yr−1, respectively. Overall, these results highlight the importance of N mineralization and immobilization in controlling the N budget in the ECS and improve the understanding of both processes and associated controlling mechanisms in the coastal marine ecosystem.

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Section: Discussionsupporting

confidence: 92%

Nitrogen mineralization and immobilization in sediments of the East China Sea: Spatiotemporal variations and environmental implications

et al. 2016

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“…A negative feedback can be produced, because increased concentrations of CO 2 can increase soil nitrification (Azam et al, 2005). On the other hand, higher levels of soil moisture from reduced transpiration should prevent soil nitrification, as observed in some studies (Cheng et al, 2012), contributing to diminished uptake of NO 3 2 by plants and favoring NH 4 + uptake. These processes appear to contribute to a better use of N in the ecosystem.…”

mentioning

confidence: 89%

The Role of Plants in the Effects of Global Change on Nutrient Availability and Stoichiometry in the Plant-Soil System

2012

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“…Nitrogen fertilizer and manure application, tillage, temperature, and soil moisture drive N 2 O emissions from agricultural land, and these factors also affect the N 2 O emissions from solar greenhouses during summer fallow.…”

Section: Discussionmentioning

confidence: 99%

“…Previous studies have shown that N 2 O emissions from agricultural systems are affected by many management practices, such as N fertilizer and manure applications, tillage, temperature, and soil moisture . 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.…”

Section: Introductionmentioning

confidence: 99%

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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Soil moisture effects on gross nitrification differ between adjacent grassland and forested soils in central Alberta, Canada

Cited by 30 publications

References 40 publications

Nitrogen mineralization and immobilization in sediments of the East China Sea: Spatiotemporal variations and environmental implications

Nitrogen mineralization and immobilization in sediments of the East China Sea: Spatiotemporal variations and environmental implications

The Role of Plants in the Effects of Global Change on Nutrient Availability and Stoichiometry in the Plant-Soil System

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

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