Open AccessJournal Article
Effects of nitrogen input on meadow marsh soil N_2O emission and organic carbon mineralization
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TL;DR: A laboratory incubation test was conducted to study the effects of different nitrogen inputs on the characteristics of N2O emission and organic carbon mineralization in a meadow marsh soil, and the variation patterns of soil microbial carbon and nitrogen as mentioned in this paper.
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Abstract: A laboratory incubation test was conducted to study the effects of different nitrogen inputs(N0:0 mg·g-1;N1:01 mg·g-1;N2:02 mg·g-1;N3:05 mg·g-1)on the characteristics of N2O emission and organic carbon mineralization in a meadow marsh soil,and the variation patterns of soil microbial carbon and nitrogenDuring the incubation period(23 d),the N2O emission in treatments N0,N1,N2,and N3 was 9112,13302,14775,and 30345 μg·kg-1,respectively,illustrating that nitrogen input promoted soil N2O emissionExcept at the late phase of incubation,the mineralization rate of soil organic carbon under nitrogen input lowered,suggesting that nitrogen input restrained the mineralization of soil organic carbon to some degreeCompared with treatment N0,the soil microbial biomass carbon in treatments N1,N2,and N3 was significantly lower(P005),but no significant difference was observed among the latter three treatmentsSoil microbial biomass nitrogen increased linearly with increasing nitrogen input,and there were significant differences among different nitrogen inputs(P005)Our results suggested that supplying exogenous nitrogen affected the structure and composition of soil microbes,and the related mechanisms should be studied further
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Citations
Effects of Long-Term (17 Years) Nitrogen Input on Soil Bacterial Community in Sanjiang Plain: The Largest Marsh Wetland in China
TL;DR: In this article , the authors performed a long-term N input experiment, including four N levels of 0, 6, 12, and 24 gN·m−2·a−1 (denoted as CK, C1, C2, and C3, respectively).
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Active carbon pool-size is enhanced by long-term manure application
Meng Wei,Aijun Zhang,Tang Zhonghou,Peng Zhao,Hong Pan,Hui Wang,Quangang Yang,Lou Yanhong,Yuping Zhuge +8 more
TL;DR: In this article, the authors studied the dynamics of soil organic carbon (SOC)-pool mineralisation in agricultural soil using a laboratory incubation experiment using the soil from a long-term experiment involving the following fertilisation regimes: no fertilisation (CK); mineral (NPK); organic (M); and combined organic-inorganic fertilisers (MNPK).
Effects of Nitrogen and Phosphorus Fertilization on Soil Carbon Fractions in Alpine Meadows on the Qinghai-Tibetan Plateau
TL;DR: Results suggested that soils will not be a C sink (except N15P15), and Nitrogen and phosphorus fertilization may lower the SOC pool by altering the plant biomass composition, especially the C:N ratios of different plant functional groups, and modifying C substrate utilization patterns of soil microbial communities.
References
Active carbon pool-size is enhanced by long-term manure application
Meng Wei,Aijun Zhang,Tang Zhonghou,Peng Zhao,Hong Pan,Hui Wang,Quangang Yang,Lou Yanhong,Yuping Zhuge +8 more
TL;DR: In this article, the authors studied the dynamics of soil organic carbon (SOC)-pool mineralisation in agricultural soil using a laboratory incubation experiment using the soil from a long-term experiment involving the following fertilisation regimes: no fertilisation (CK); mineral (NPK); organic (M); and combined organic-inorganic fertilisers (MNPK).
Effects of Nitrogen and Phosphorus Fertilization on Soil Carbon Fractions in Alpine Meadows on the Qinghai-Tibetan Plateau
TL;DR: Results suggested that soils will not be a C sink (except N15P15), and Nitrogen and phosphorus fertilization may lower the SOC pool by altering the plant biomass composition, especially the C:N ratios of different plant functional groups, and modifying C substrate utilization patterns of soil microbial communities.