Biochar stability in soil: Decomposition during eight years and transformation as assessed by compound-specific 14C analysis

Kuzyakov, Yakov; Богомолова, И. Н.; Glaser, Bruno

doi:10.1016/j.soilbio.2013.12.021

Cited by 519 publications

(315 citation statements)

References 46 publications

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“…1) confirmed the role of BC in contributing to C storage in soil (Lehmann et al, 2006;Demisie et al, 2014). Biochar is a very C-rich substrate, and it is also resistant to decay due to its aromatic structure; e.g., only approximately 6% of the initially added BC was mineralized to CO 2 during the first 8.5 years of incubation (Kuzyakov et al, 2014). BC application, therefore, can increase C stock in paddy soil.…”

Section: Effects Of Biochar and Fertilizer Addition On Organic Mattermentioning

confidence: 66%

Biochar affects soil organic matter cycling and microbial functions but does not alter microbial community structure in a paddy soil

Tian

Wang

Dippold

et al. 2016

Science of The Total Environment

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238

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Section: Effects Of Biochar and Fertilizer Addition On Organic Mattermentioning

confidence: 66%

Biochar affects soil organic matter cycling and microbial functions but does not alter microbial community structure in a paddy soil

Tian

Wang

Dippold

et al. 2016

Science of The Total Environment

Self Cite

238

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“…According to the fitting data, the C 1 in biochar used in this study contained b0.5%. After substantial consumption of available substrates, decreased nutrient source became the limiting factor of soil microbial activity (Kuzyakov et al, 2014). Therefore, C min rate decreased in the late stage of the experiment.…”

Section: Rate Of C Min In Biochar-amended Saline Soilmentioning

confidence: 98%

Temperature and moisture responses to carbon mineralization in the biochar-amended saline soil

Sun

Zhang

et al. 2016

Science of The Total Environment

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• Cumulative C min increases with biochar added and incubation temperature.• The temperature rise reduced the turnover time of C pools and Q 10 . This study assessed the effects of temperature and moisture on carbon mineralization (C min ) in a saline soil system with biochar amendment. The dynamics of C min were monitored in a biochar-amended saline soil for 220 days by incubation experiments under different conditions of temperature (15°C, 25°C and 35°C) and moisture (30%, 70% and 105% of the water-holding capacity). Results showed that as the incubation temperature rose, cumulative C min consistently increased in soil added with 0-4% biochar. The two-compartment model could well describe the dynamics of C min . The temperature rise increased the concentration of labile C in soil, but reduced the turnover time of labile and recalcitrant C pools and the value of temperature coefficient Q 10 . The response of C min to moisture was varying in soil amended with different levels of biochar. In the control treatment (soil alone), cumulative C min increased only when soil moisture was N105%. In the biochar treatments, however, 70% of waterholding capacity was optimal for C min , except for 2%-biochar treatment at 35°C. The findings highlight the necessity to consider the combined effects of soil moisture, temperature and the amount of biochar added for assessing C min in biochar-amended saline soils.

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“…Furthermore, the vegetable yield enhancement effect of biochar may also be associated with increases in root exudation in the plots amended with biochar (Gregory, 2006). Biochar amendment in agricultural soil may stimulate microbial activity, resulting in nutrient release (Steinbeiss et al, 2009), reducing nutrient leaching (Laird et al, 2010), and improving crop nutrient availability and plant N uptake (Saarnio et al, 2013) in the intensively managed vegetable field. Moreover, as shown in Table 3b, a significant difference in vegetable yield among the treatments was found under different biochar application rates with compound N fertilization (CF-C0, CF-C1 and CF-C2), in agreement with the results reported by Jeffery et al (2011), although the plots amended with biochar showed a significantly lower soil pH (Table 2, p < 0.001).…”

Section: Effects Of Biochar On N 2 O Emissions and Vegetable Yieldmentioning

confidence: 99%

The combined effects of nitrification inhibitor and biochar incorporation on yield-scaled N<sub>2</sub>O emissions from an intensively managed vegetable field in southeastern China

Fan

Xiong

et al. 2015

Biogeosciences

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Abstract. An experiment was conducted to study the influences of nitrification inhibitor (NI) and biochar incorporation on yield-scaled N 2 O using the static chamber method and gas chromatography in an intensively managed vegetable field with seven consecutive vegetable crops from 2012 to 2014 in southeastern China. With an equal annual nitrogen (N) application rate (1217 kg N ha −1 yr −1 ), six treatments under three biochar amendment rates -namely, 0 t ha −1 (C0), 20 t ha −1 (C1) and 40 t ha −1 (C2) -with compound fertilizer (CF) or urea mixed with NI of nitrapyrin as chlorinated pyridine (CP) were studied in these field experiments. The results showed that, although there was no significant influence on soil organic carbon (SOC) content or total nitrogen (TN), nitrapyrin could result in a significant increase in soil pH during the experimental period. Nitrapyrin significantly decreased cumulative N 2 O emissions by 15.9-32.1 % while increasing vegetable yield by 9.8-41.9 %. Thus, it also decreased yield-scaled N 2 O emissions significantly. In addition to the differential responses of the soil pH, biochar amendment significantly increased SOC and TN. Compared with the treatments without biochar addition, the cumulative N 2 O emissions showed no significant difference in the CF or the CP group treatments but increased slightly (not significantly) by 7.9-18.3 % in the CP group treatments. Vegetable yield was enhanced by 7.1-49.5 % in the CF group treatments compared with the treatments without biochar amendment, while there was no significant difference in the CP group treatments, and the yield-scaled N 2 O emissions were thus decreased significantly. Furthermore, treatments involving with nitrapyrin and biochar incorporation slightly increased yieldscaled N 2 O emissions by 9.4 %, on average, compared with CP-C0. Therefore, the application of nitrapyrin could serve as an appropriate practice for increasing vegetable yield and mitigating N 2 O emissions in intensively managed vegetable fields and should be further examined in various agroecosystems.

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Biochar stability in soil: Decomposition during eight years and transformation as assessed by compound-specific 14C analysis

Cited by 519 publications

References 46 publications

Biochar affects soil organic matter cycling and microbial functions but does not alter microbial community structure in a paddy soil

Biochar affects soil organic matter cycling and microbial functions but does not alter microbial community structure in a paddy soil

Temperature and moisture responses to carbon mineralization in the biochar-amended saline soil

The combined effects of nitrification inhibitor and biochar incorporation on yield-scaled N<sub>2</sub>O emissions from an intensively managed vegetable field in southeastern China

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Biochar stability in soil: Decomposition during eight years and transformation as assessed by compound-specific 14C analysis

Cited by 519 publications

References 46 publications

Biochar affects soil organic matter cycling and microbial functions but does not alter microbial community structure in a paddy soil

Biochar affects soil organic matter cycling and microbial functions but does not alter microbial community structure in a paddy soil

Temperature and moisture responses to carbon mineralization in the biochar-amended saline soil

The combined effects of nitrification inhibitor and biochar incorporation on yield-scaled N&lt;sub&gt;2&lt;/sub&gt;O emissions from an intensively managed vegetable field in southeastern China

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The combined effects of nitrification inhibitor and biochar incorporation on yield-scaled N<sub>2</sub>O emissions from an intensively managed vegetable field in southeastern China