CaCO3 in agroecosystems as a source of atmospheric CO2 by nitrogen fertilization
Final Report Abstract
Carbonate-containing minerals comprise an additional form of soil carbon known as soil inorganic carbon (SIC). Although SIC stocks are large, they have been neglected in most studies of carbon sequestration. In this project, we demonstrate the importance of SIC in the global C cycle and ecosystem functions. We have shown how pH regulation by SIC provides a unidirectional, significant source of CO2 in agroecosystems. In particular, we have studied the mechanisms of soil acidification, mainly through the application of nitrogen (N) fertilizers, but we have also shown the propagation of the acidification front down into the soil profile over time, leading to the contribution of subsoil SIC stocks to soil CO2 emissions. We also tested the acidification potential of common fertilizer types at different temperatures (10 and 25 °C), analyzed the effects of plant traits, i.e. N-use efficiency and N-fixation capacity, and studied the dynamics of SIC under anaerobic conditions. In addition, we assessed future SIC losses under anticipated global change processes such as increased N deposition and fertilization, elevated CO2, invasive plant distribution, and climate change. Finally, we discussed how SIC losses may destroy various soil functions and ecosystem services, but also impose significant economic and social costs that have not been properly considered. In summary, it is critical to consider that unlike organic carbon, SIC losses are irretrievable and that when SIC stocks are depleted, soils are vulnerable to a wide range of degradation factors, including erosion, surface and subsurface compaction, acidification, and nutrient depletion.
Publications
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2021. Type and amount of nitrogen fertilizers control the share of inorganic carbon pool in emitted CO2 from calcareous soils: Implications for land management and global warming. 3rd Online International Conference on Environmental Sustainability and Climate Change
Tao, J., Fan, L., Banfield, C.C., Zhou, J., Kuzyakov, Y. & Zamanian, K.
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In‐situ biochar production associated with paddies: Direct involvement of farmers in greenhouse gases reduction policies besides increasing nutrients availability and rice production. Land Degradation & Development, 32(14), 3893-3904.
Ghorbani, Mohammad; Amirahmadi, Elnaz & Zamanian, Kazem
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Letter-to-the-Editor: Does acidification really increase soil carbon in croplands? How statistical analyses of large datasets might mislead the conclusions. Geoderma, 384, 114806.
Kuzyakov, Yakov; Kuzyakova, Irina; Raza, Sajjad; Zhou, Jianbin & Zamanian, Kazem
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Pedogenic carbonates accumulation in a calcareous Mediterranean soil following introduction of irrigation. Copernicus GmbH.
De Soto, Isabel Sonsoles; Virto, Iñigo; Enrique, Alberto; Antón, Rodrigo; Barré, Pierre & Zamanian, Kazem
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Soil carbonates: The unaccounted, irrecoverable carbon source. Geoderma, 384, 114817.
Zamanian, Kazem; Zhou, Jianbin & Kuzyakov, Yakov
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Nitrogen fertilizers control CO2 emission from calcareous soils: implications for land management and global warming. Copernicus GmbH.
Tao, Jingjing; Fan, Lichao; Zhou, Jianbin; Kuzyakov, Yakov & Zamanian, Kazem
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Nitrogen use efficiency of plant species matters: CO2 emission from soil inorganic carbon and its temperature dependence in a calcareous soil. Copernicus GmbH.
Fan, Lichao; Tao, Jingjing; Shao, Guodong; Ai, Juanjuan & Zamanian, Kazem
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Soil inorganic carbon: stocks, functions, losses and their consequences. Burleigh Dodds Series in Agricultural Science, 209-236. Burleigh Dodds Science Publishing.
Zamanian, Kazem & Kuzyakov, Yakov
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Vulnerability and driving factors of soil inorganic carbon stocks in Chinese croplands. Science of The Total Environment, 825, 154087.
Tao, Jingjing; Raza, Sajjad; Zhao, Mengzhen; Cui, Jiaojiao; Wang, Peizhou; Sui, Yueyu; Zamanian, Kazem; Kuzyakov, Yakov; Xu, Minggang; Chen, Zhujun & Zhou, Jianbin
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Long-term organic fertilizer-induced carbonate neoformation increases carbon sequestration in soil. Environmental Chemistry Letters, 21(2), 663-671.
Liu, Enke; Zhou, Jie; Yang, Xiao; Jin, Tao; Zhao, Bingqiang; Li, Lili; Wen, Yanchen; Soldatova, Evgeniya; Zamanian, Kazem; Gopalakrishnan, Subramaniam; Mei, Xurong & Kuzyakov, Yakov
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Soil inorganic carbon, the other and equally important soil carbon pool: Distribution, controlling factors, and the impact of climate change. Advances in Agronomy, 165-231. Elsevier.
Sharififar, Amin; Minasny, Budiman; Arrouays, Dominique; Boulonne, Line; Chevallier, Tiphaine; van Deventer, Piet; Field, Damien J.; Gomez, Cécile; Jang, Ho-Jun; Jeon, Sang-Ho; Koch, Jaco; McBratney, Alex B.; Malone, Brendan P.; Marchant, Ben P.; Martin, Manuel P.; Monger, Curtis; Munera-Echeverri, José-Luis; Padarian, José; Pfeiffer, Marco ... & van Zijl, George
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Soil inorganic carbon: stocks, functions, losses and their consequences. Copernicus GmbH.
Zamanian, Kazem & Kuzyakov, Yakov
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Acidification of European croplands by nitrogen fertilization: Consequences for carbonate losses, and soil health. Science of The Total Environment, 924, 171631.
Zamanian, Kazem; Taghizadeh-Mehrjardi, Ruhollah; Tao, Jingjing; Fan, Lichao; Raza, Sajjad; Guggenberger, Georg & Kuzyakov, Yakov
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Deep-root respiration: The unknown CO2 removed from the atmosphere. Science of The Total Environment, 949, 175294.
Zamanian, Kazem
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Inorganic carbon accumulation in saline soils via modification effects of organic amendments on dissolved ions and enzymes activities. CATENA, 241, 108039.
Song, Jiashen; Zhang, Hongyuan; Zamanian, Kazem; Chang, Fangdi; Yu, Ru; Wang, Jing; Zhou, Jie & Li, Yuyi
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Kalk in landwirtschaftlichen Böden ist klimarelevant. In: Technologie- Informationen 1 | 2024. Klima – Schutz – Maßnahmen. Seite 25
Zamanian, K.
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Nitrification-induced acidity controls CO2 emission from soil carbonates. Soil Biology and Biochemistry, 192, 109398.
Tao, Jingjing; Fan, Lichao; Zhou, Jianbin; Banfield, Callum Colin; Kuzyakov, Yakov & Zamanian, Kazem
