Biochar addition stabilized soil carbon sequestration by reducing temperature sensitivity of mineralization and altering the microbial community in a greenhouse vegetable field

Zhang, Xi; Zhang, Qianqian; Zhan, Liping; Xu, Xintong; Bi, Ruiyu; Xiong, Zhengqin

doi:10.1016/j.jenvman.2022.114972

Cited by 38 publications

(22 citation statements)

References 57 publications

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“…Despite the fact that tillage and irrigation were frequent in GVP systems, the SOC enhancement owing to the direct input of recalcitrant C from biochar increased expectedly (Table S5). Wang et al and Zhang et al [9,36] also found that biochar with high aromatic compound fractions is resistant to biodegradation and significantly promotes soil C sequestration. Soil CEC showed a negative trend after biochar application, contrary to other research results [64].…”

Section: Lasting Effect Of Biochar On Vegetable Quality and Soil Fert...mentioning

confidence: 99%

“…This experimental site, established in November 2016, is a typical vegetable field that had been cultivated for almost twelve years. The local climate characteristics can be found in Zhang et al [36]. The soil is classified as a Haplic Luvisols, and the soil properties before the biochar addition from the top 20 cm are shown in Table S1.…”

Section: Site Description and Biochar Propertiesmentioning

confidence: 99%

“…Wheat straw-derived biochar applied in our study was obtained from Henan Sanli New Energy Co., Ltd. (Shangqiu, China). The production details and physicochemical properties of biochar are listed in Zhang et al [36].…”

Section: Site Description and Biochar Propertiesmentioning

confidence: 99%

“…All management procedures (e.g., sowing, fertilizer, irrigation, harvest, and fallow) followed the local agronomic practices. Further information is available according to Zhang et al [36].…”

Section: Field Designmentioning

confidence: 99%

“…Meanwhile, the polycyclic aromatic hydrocarbons from biochars were absorbed by the surrounding soil after four years of field aging [52]. Although biochar is rich in labile C and N substances, only recalcitrant C remains in biochar-treated soil after 3.5 years of frequent irrigation and tillage, making it difficult for microbes to utilize [36].…”

Section: Lasting Effect Of Biochar On N 2 O and No Emissionsmentioning

confidence: 99%

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Biochar Mitigated Yield-Scaled N2O and NO Emissions and Ensured Vegetable Quality and Soil Fertility: A 3-Year Greenhouse Field Observation

Zhang

et al. 2022

Agronomy

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Biochar amendments have been widely used in agricultural soil for lowering N2O and NO emissions while improving soil fertility and crop performance. However, a thorough understanding of the longevity of the favorable effects would be a prerequisite for large-scale biochar application in agriculture. We conducted a three-year greenhouse vegetable trial in Southeast China to systematically investigate the impacts of biochar mixed with nitrogen (N) on soil N2O and NO emissions, vegetable performance, and soil fertility at an interannual scale. The field experiment was established in November 2016 with biochar (0, 20 and 40 t ha−1; C0, C1, and C2, respectively), applied once without/with 240 kg N ha−1 urea (N0 or N1, respectively). Soil N2O and NO emissions were monitored during the spring vegetable cultivation period, and vegetable yield, quality, and soil properties were measured after harvests in 2018, 2019, and 2020. Results indicated that N application significantly increased N2O and NO emissions and vegetable yield throughout the trial period. Biochar combined with N generally reduced N2O and NO emissions and emission factors while increasing the vegetable yield, leading to lower yield-scaled N2O and NO emissions in 2018 and 2019. Biochar markedly enhanced soil pH and organic carbon and persisted, but generally had no significant effect on N use efficiency (NUE), vegetable quality, and soil fertility index (SFI) among treatments in over-fertilized vegetable fields. Based on our results, biochar application at 20 t ha−1 combined with N seemed to achieve the highest agronomic and environmental benefits for intensive vegetable production in Southeast China.

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Section: Lasting Effect Of Biochar On Vegetable Quality and Soil Fert...mentioning

confidence: 99%

Section: Site Description and Biochar Propertiesmentioning

confidence: 99%

Section: Site Description and Biochar Propertiesmentioning

confidence: 99%

Section: Field Designmentioning

confidence: 99%

Section: Lasting Effect Of Biochar On N 2 O and No Emissionsmentioning

confidence: 99%

See 3 more Smart Citations

Biochar Mitigated Yield-Scaled N2O and NO Emissions and Ensured Vegetable Quality and Soil Fertility: A 3-Year Greenhouse Field Observation

Zhang

et al. 2022

Agronomy

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Biochar application significantly increases soil organic carbon under conservation tillage: an 11-year field experiment

Ding

Zhao

et al. 2023

Biochar

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Biochar application and conservation tillage are significant for long-term organic carbon (OC) sequestration in soil and enhancing crop yields, however, their effects on native soil organic carbon (native SOC) without biochar carbon sequestration in situ remain largely unknown. Here, an 11-year field experiment was carried out to examine different biochar application rates (0, 30, 60, and 90 Mg ha−1) on native SOC pools (native labile SOC pool I and II, and native recalcitrant SOC) and microbial activities in calcareous soil across an entire winter wheat–maize rotation. The proportions of C3 and C4-derived native SOC mineralization were quantified using soil basal respiration (SBR) combined with 13C natural isotope abundance measurements. The results showed that 39–51% of the biochar remained in the top 30 cm after 11 years. Biochar application rates significantly increased native SOC and native recalcitrant SOC contents but decreased the proportion of native labile SOC [native labile SOC pool I and II, dissolved organic carbon (DOC), and microbial biomass carbon (MBC)]. Biochar application tended to increase the indicators of microbial activities associated with SOC degradation, such as SBR, fluorescein diacetate hydrolysis activity, and metabolic quotient (qCO2). Meanwhile, higher biochar application rates (B60 and B90) significantly increased the C4-derived CO2 proportion of the SBR and enhanced C4-derived native SOC mineralization. The effect of the biochar application rate on the content and proportion of native SOC fractions occurred in the 0–15 cm layer, however, there were no significant differences at 15–30 cm. Soil depth also significantly increased native labile SOC pool I and II contents and decreased qCO2. In conclusion, the biochar application rate significantly increased native SOC accumulation in calcareous soil by enhancing the proportion of native recalcitrant SOC, and biochar application and soil depth collectively influenced the seasonal turnover of native SOC fractions, which has important implications for long-term agricultural soil organic carbon sequestration. Graphical Abstract

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Biochar mitigates the mineralization of allochthonous organic matter and global warming potential of saltmarshes by influencing functional bacteria

Zhang,

Huang,

et al. 2024

Carbon Res.

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Saltmarshes are suffering from severe degradation due to anthropogenic activities, leading to the loss of blue carbon and greenhouse gas (GHG) emissions. Given the significant potential of biochar in mitigating climate change, adding biochar to saltmarshes would alleviate this situation. This study investigated the effects of different biochar (made from Spartina alterniflora, corn straw, and Laminaria japonica) and their aged biochar on the carbon fraction contents, GHG emissions, and microbial community structure of saltmarsh soils with allochthonous organic matter (Enteromorpha prolifera) addition. After 60 days of incubation, total organic carbon (TOC) loss and global warming potential (GWP) of biochar-amended soils were reduced by 67.29–124.33% and 4.91–123.24%, respectively (p < 0.05). Biochar reduced the proportion of labile carbon (dissolved organic carbon (DOC) and microbial biomass carbon (MBC)) in organic carbon by 61.92–86.15% (p < 0.05). In addition, biochar reduced the relative abundance of specific functional bacteria (inc. cellulolysis, aromatic compound degradation, and xylanolysis) involved in organic carbon decomposition by 20.02–37.82% (p < 0.05). These results suggest that even in the presence of high levels of liable organic matter, the application of biochar to saltmarshes has a sustained effect in promoting carbon accumulation and reducing GHG emissions, and this effect is regulated by a decrease of functional bacteria associated with carbon metabolism. Therefore, the in situ study of biochar on restoring carbon sink function of saltmarshes is proposed for practical engineering in future. Graphical Abstract

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Biochar addition stabilized soil carbon sequestration by reducing temperature sensitivity of mineralization and altering the microbial community in a greenhouse vegetable field

Cited by 38 publications

References 57 publications

Biochar Mitigated Yield-Scaled N2O and NO Emissions and Ensured Vegetable Quality and Soil Fertility: A 3-Year Greenhouse Field Observation

Biochar Mitigated Yield-Scaled N2O and NO Emissions and Ensured Vegetable Quality and Soil Fertility: A 3-Year Greenhouse Field Observation

Biochar application significantly increases soil organic carbon under conservation tillage: an 11-year field experiment

Biochar mitigates the mineralization of allochthonous organic matter and global warming potential of saltmarshes by influencing functional bacteria

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