Biochar promotes the reduction of N2O to N2 and concurrently suppresses the production of N2O in calcareous soil

Wenxu Dong, Anna Walkiewicz, Andrzej Bieganowski, Oene Oenema, Magdalena Nosalewicz, Chaohui He, Yuming Zhang, Chunsheng Hu*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Biochar additions may mitigate N2O emissions from soil. The mechanisms underpinning the mitigation of emissions remain to be elucidated. A series of incubation experiments were performed to investigate the effects of biochar on N2O production and reduction in columns with a low-fertility or high-fertility soil, with or without the injection of N2O in the subsoil and with and without glucose (to stimulate denitrification). Biochar was added to the calcareous soils in 0 and 1% (w/w) amounts and moisture was maintained at 70% water-filled pore space (WFPS) over the incubation period. The results revealed that biochar reduced the emissions of soil-produced N2O by 37–47% and those of injected N2O by 23–44%. The addition of glucose solution strongly increased N2O emissions, while biochar reduced total N2O emissions by as much as 64–81% and those of injected N2O alone by 29–51%. Differences between the low-fertility and high-fertility soils in the apparent N2O emission mitigation by biochar were relatively small, but tended to be larger for the low-fertility soil. The results suggest that biochar addition can suppress the production of N2O in soil and simultaneously stimulate the reduction of N2O to N2. Further studies are needed to elucidate the regulatory effects of biochar in soil.

Original languageEnglish
Article number114091
JournalGeoderma
Volume362
DOIs
Publication statusPublished - 15 Mar 2020

Fingerprint

biochar
calcareous soil
calcareous soils
soil fertility
fertility
glucose
mitigation
soil
incubation
pore space
subsoil
denitrification
moisture
injection
experiment

Keywords

  • Biochar
  • Calcareous soil
  • Denitrification
  • Nitrous oxide emissions

Cite this

Dong, Wenxu ; Walkiewicz, Anna ; Bieganowski, Andrzej ; Oenema, Oene ; Nosalewicz, Magdalena ; He, Chaohui ; Zhang, Yuming ; Hu, Chunsheng. / Biochar promotes the reduction of N2O to N2 and concurrently suppresses the production of N2O in calcareous soil. In: Geoderma. 2020 ; Vol. 362.
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abstract = "Biochar additions may mitigate N2O emissions from soil. The mechanisms underpinning the mitigation of emissions remain to be elucidated. A series of incubation experiments were performed to investigate the effects of biochar on N2O production and reduction in columns with a low-fertility or high-fertility soil, with or without the injection of N2O in the subsoil and with and without glucose (to stimulate denitrification). Biochar was added to the calcareous soils in 0 and 1{\%} (w/w) amounts and moisture was maintained at 70{\%} water-filled pore space (WFPS) over the incubation period. The results revealed that biochar reduced the emissions of soil-produced N2O by 37–47{\%} and those of injected N2O by 23–44{\%}. The addition of glucose solution strongly increased N2O emissions, while biochar reduced total N2O emissions by as much as 64–81{\%} and those of injected N2O alone by 29–51{\%}. Differences between the low-fertility and high-fertility soils in the apparent N2O emission mitigation by biochar were relatively small, but tended to be larger for the low-fertility soil. The results suggest that biochar addition can suppress the production of N2O in soil and simultaneously stimulate the reduction of N2O to N2. Further studies are needed to elucidate the regulatory effects of biochar in soil.",
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author = "Wenxu Dong and Anna Walkiewicz and Andrzej Bieganowski and Oene Oenema and Magdalena Nosalewicz and Chaohui He and Yuming Zhang and Chunsheng Hu",
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Biochar promotes the reduction of N2O to N2 and concurrently suppresses the production of N2O in calcareous soil. / Dong, Wenxu; Walkiewicz, Anna; Bieganowski, Andrzej; Oenema, Oene; Nosalewicz, Magdalena; He, Chaohui; Zhang, Yuming; Hu, Chunsheng.

In: Geoderma, Vol. 362, 114091, 15.03.2020.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Biochar promotes the reduction of N2O to N2 and concurrently suppresses the production of N2O in calcareous soil

AU - Dong, Wenxu

AU - Walkiewicz, Anna

AU - Bieganowski, Andrzej

AU - Oenema, Oene

AU - Nosalewicz, Magdalena

AU - He, Chaohui

AU - Zhang, Yuming

AU - Hu, Chunsheng

PY - 2020/3/15

Y1 - 2020/3/15

N2 - Biochar additions may mitigate N2O emissions from soil. The mechanisms underpinning the mitigation of emissions remain to be elucidated. A series of incubation experiments were performed to investigate the effects of biochar on N2O production and reduction in columns with a low-fertility or high-fertility soil, with or without the injection of N2O in the subsoil and with and without glucose (to stimulate denitrification). Biochar was added to the calcareous soils in 0 and 1% (w/w) amounts and moisture was maintained at 70% water-filled pore space (WFPS) over the incubation period. The results revealed that biochar reduced the emissions of soil-produced N2O by 37–47% and those of injected N2O by 23–44%. The addition of glucose solution strongly increased N2O emissions, while biochar reduced total N2O emissions by as much as 64–81% and those of injected N2O alone by 29–51%. Differences between the low-fertility and high-fertility soils in the apparent N2O emission mitigation by biochar were relatively small, but tended to be larger for the low-fertility soil. The results suggest that biochar addition can suppress the production of N2O in soil and simultaneously stimulate the reduction of N2O to N2. Further studies are needed to elucidate the regulatory effects of biochar in soil.

AB - Biochar additions may mitigate N2O emissions from soil. The mechanisms underpinning the mitigation of emissions remain to be elucidated. A series of incubation experiments were performed to investigate the effects of biochar on N2O production and reduction in columns with a low-fertility or high-fertility soil, with or without the injection of N2O in the subsoil and with and without glucose (to stimulate denitrification). Biochar was added to the calcareous soils in 0 and 1% (w/w) amounts and moisture was maintained at 70% water-filled pore space (WFPS) over the incubation period. The results revealed that biochar reduced the emissions of soil-produced N2O by 37–47% and those of injected N2O by 23–44%. The addition of glucose solution strongly increased N2O emissions, while biochar reduced total N2O emissions by as much as 64–81% and those of injected N2O alone by 29–51%. Differences between the low-fertility and high-fertility soils in the apparent N2O emission mitigation by biochar were relatively small, but tended to be larger for the low-fertility soil. The results suggest that biochar addition can suppress the production of N2O in soil and simultaneously stimulate the reduction of N2O to N2. Further studies are needed to elucidate the regulatory effects of biochar in soil.

KW - Biochar

KW - Calcareous soil

KW - Denitrification

KW - Nitrous oxide emissions

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DO - 10.1016/j.geoderma.2019.114091

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VL - 362

JO - Geoderma

JF - Geoderma

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ER -