Biochar-Based Fertilizer Decreased Soil N[sub.2]O Emission and Increased Soil CH[sub.4] Uptake in a Subtropical Typical Bamboo Plantation

Soil is a crucial contributor to greenhouse gas (GHG) emissions from terrestrial ecosystems to the atmosphere. The reduction of GHG emissions in plantation management is crucial to combating and mitigating global climate change. A 12-month field trial was conducted to explore the effects of differen...

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Bibliographic Details
Published in:Forests 2022-12, Vol.13 (12)
Main Authors: Enhui Wang, Ning Yuan, Shaofeng Lv, Xiaoping Tang, Gang Wang, Linlin Wu, Yufeng Zhou, Guomo Zhou, Yongjun Shi, Lin Xu
Format: Article
Language:English
Subjects:
Bamboo
Comparative analysis
Environmental aspects
Fertilizers
Greenhouse gases
Measurement
Physiological aspects
Soil chemistry
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Summary:Soil is a crucial contributor to greenhouse gas (GHG) emissions from terrestrial ecosystems to the atmosphere. The reduction of GHG emissions in plantation management is crucial to combating and mitigating global climate change. A 12-month field trial was conducted to explore the effects of different fertilization treatments (control, without fertilizer (CK); biochar-based fertilizer treatment (BFT); chemical fertilizer treatment (CFT); and mixture of 50% BFT and 50% CFT (MFT)) on the soil GHG emissions of a typical bamboo (Pleioblastus amarus (Keng) Keng f.) plantation. The results demonstrated that compared with the CK, BFT reduced the annual cumulative soil N[sub.2] O emission by 16.3% (p < 0.01), while CFT and MFT significantly increased it by 31.0% and 23.3% (p < 0.01), respectively. Meanwhile, BFT and MFT increased the annual cumulative soil CH[sub.4] uptake by 5.8% (p < 0.01) and 7.5% (p < 0.01), respectively, while there was no statistically significant difference between CFT and the control. In addition, BFT, CFT, and MFT significantly increased the annual cumulative soil CO[sub.2] emission by 9.4% (p < 0.05), 13.0% (p < 0.01), and 26.5% (p < 0.01). The global warming potential (GWP) of BFT did not change significantly, while CFT and MFT increased the GWP by 13.7% (p < 0.05) and 28.6% (p < 0.05), respectively, compared with the control. Structural equation modeling revealed different treatments affected soil N[sub.2] O and CH[sub.4] emission by changing soil labile carbon and labile nitrogen pools. This study suggests utilizing BFT new ideas and strategies for mitigating GHG emissions from soils in subtropical Pleioblastus amarus plantations.
ISSN:1999-4907
1999-4907
DOI:10.3390/f13122181