Biochar-Induced Mitigation Potential of Greenhouse Gas Emissions Was Enhanced under High Soil Nitrogen Availability in Intensively-Irrigated Vegetable Cropping Systems

Zhang, Yunfeng; Hwarari, Delight; Yang, Ye; Huo, Ailing; Wang, Jinyan; Yang, Liming

doi:10.3390/agronomy12102249

Cited by 4 publications

(3 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This discrepancy may be attributed to the relatively consistent C/N ratio in our investigation, though with substantial variations in the TN and SOC among the different soils (Table 1). Given the considerable heterogeneity in soil physical and chemical properties (e.g., soil texture and pH), other factors than the C/N ratio index exerted a greater influence on N 2 O emission [40,41]. As pH increased, there was a significant rise in soil N 2 O emission.…”

Section: N 2 O Production Affected By Soil Propertiesmentioning

confidence: 99%

Contributions of Ammonia-Oxidizing Archaea and Bacteria to Nitrous Oxide Production in Intensive Greenhouse Vegetable Fields

Dong,

Xu,

Zhang

et al. 2023

Agronomy

View full text Add to dashboard Cite

With excessive nitrogen (N) input, high nitrous oxide (N2O) emissions are frequently observed in greenhouse vegetable fields. We hypothesized that the underlying production mechanisms can be derived across a wide selection of vegetable fields in the middle and lower reaches of the Yangtze River. Thus, we investigated the emission characteristics and relative contributions of ammonia-oxidizing archaea (AOA) and bacteria (AOB) and other microbial processes to the N2O production from five long-term greenhouse vegetable fields through an incubation experiment with combined inhibition methods. The results showed that the ammonia oxidation process is the dominant contributor to N2O production at all five sites, accounting for 88–97% of the total N2O emissions. Regardless of acidic, neutral, or alkaline soil, AOA-driven N2O emission rates were consistently higher than AOB-driven N2O emission rates. Both AOA-driven and AOB-driven N2O emissions exhibited positive correlations with soil pH, with significant increases in soil N2O production associated with high pH levels. Therefore, general production mechanisms were derived, such that more attention should be paid to AOA-driven N2O emissions and to vegetable soils with a relatively high pH in the middle and lower reaches of the Yangtze River.

show abstract

Section: N 2 O Production Affected By Soil Propertiesmentioning

confidence: 99%

Contributions of Ammonia-Oxidizing Archaea and Bacteria to Nitrous Oxide Production in Intensive Greenhouse Vegetable Fields

Dong,

Xu,

Zhang

et al. 2023

Agronomy

View full text Add to dashboard Cite

show abstract

“…Almost 45% of all vegetable production in the world is done in China (Zhang et al 2022). Hence, vegetable cultivation results in 20% of direct N 2 O emissions from Chinese croplands (Zheng et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Impacts of Chicken Manure Biochar on Nitrous Oxide and Methane Emissions from Vegetable Field in Subtropical China

Alami,

Fang,

Zhong

et al. 2024

Preprint

View full text Add to dashboard Cite

Vegetable production in Subtropical China is distinguished by excessive nitrogen (N) fertilization, frequent irrigation, and multiple crop rotations in a single year, making it one of China’s most severely impacted agro-ecosystems. The aforementioned variables are closely related to soil nitrous oxide (N2O) and methane (CH4) emissions. However, not much research has been conducted on the emission characteristics of N2O and CH4 from local farmers’ practices, and the impacts of chicken manure biochar on the emissions of multiple-cropping vegetable fields in south subtropical China. Hence, we conducted a field trial to measure N2O and CH4 emissions using static chamber-gas chromatography. Four treatments were used: control (CK) with no fertilizer, 100% chemical N fertilization (CN), the conventional 30% chicken manure N plus 70%CN (CMN+CN), and 30% chicken manure biochar N plus 70%CN (CMBN+CN). Seven seasons continuous vegetable production showed, the annual cumulative N2O emissions reached to 12.4, 63.5, 111.8 and 44.1 kg N2O-N ha-1 for CK, CN, CMN+CN, and CMBN+CN treatments, respectively. Compared to CN and CMN+CN treatments, CMBN+CN treatment reduced N2O emissions by 35.9% - 65.7%, while it simultaneously increases annual total vegetable yield by 16.1% relative to CN treatment. Seven seasons mean N2O emission factors are 1.3% for CN, 3.8% for CMN+CN, 0.9% for CMBN+CN. The CH4 emission was negligible, fall into 0.07 kg CH4-C ha-1 for CK treatment to 0.8 kg CH4-C ha-1 for CN treatment. Temperature and soil moisture had a strong relationship with N2O emissions. For N2O emissions, the ideal interior chamber temperature was around 31.9 °C and the soil's water-filled pore space (WFPS) was approximately 60%. Our research highlighted that, fertilizer rates and types, soil moisture and temperature were the main controlling factors of N2O emissions in subtropical vegetable field. Future climate change will cause environmental factors to change more dramatically, which will probably result in more N2O emissions from conventional vegetable fields in subtropical areas. Chicken manure biochar can be one of the best substitutes for fresh chicken manure as a soil supplement, because it has a beneficial effect on improving vegetable yield and reducing N2O emissions in subtropical China.

show abstract

“…Almost 45% of all vegetable production in the world is done in China [6]. Hence, vegetable cultivation results in 19.2% of GHG emissions from Chinese croplands [7].…”

Section: Introductionmentioning

confidence: 99%

Impacts of High-Frequency Chicken Manure Biochar Application on N2O and CH4 Emissions from Vegetable Field in Subtropical China

Alami,

Fang,

Zhong

et al. 2024

Agronomy

View full text Add to dashboard Cite

Vegetable production in Subtropical China is distinguished by excessive nitrogen (N) fertilization, frequent irrigation, and multiple crop rotations in a single year. The aforementioned variables are closely related to soil nitrous oxide (N2O) and methane (CH4) emissions. Hence, we conducted a field trial to measure N2O and CH4 emissions using static chamber–gas chromatograph. Four treatments were used: control (CK) with no fertilizer, 100% chemical N fertilization (CN), the conventional 30% chicken manure N plus 70%CN (CMN + CN), and 30% chicken manure biochar N plus 70%CN (CMBN + CN). The annual cumulative N2O emissions reached 12.4, 63.5, 111.8, and 44.1 kg N2O-N ha−1 for the CK, CN, CMN + CN, and CMBN + CN treatments, respectively. Compared to the CN and CMN + CN treatments, the CMBN + CN treatment reduced N2O emissions by 35.9%–65.7%, while it simultaneously increased the total vegetable yield by 16.1% compared to the CN treatment. Seven seasons mean N2O emission factors are 1.3% for CN, 3.8% for CMN + CN, and 0.9% for CMBN + CN. The CH4 emission was negligible, ranging from 0.07 kg CH4-C ha−1 for the CK treatment to 0.8 kg CH4-C ha−1 for the CN treatment. N2O emissions peaked under the conditions of an interior chamber temperature of around 31.9 °C and the water-filled pore space (WFPS) of the soil being approximately 60%. Future climate change will intensify, triggering higher N2O emissions from subtropical vegetable fields. CMB can be one of the best substitutes for direct chicken manure application as a soil supplement because it has a beneficial effect on improving vegetable yield and reducing N2O emissions in Subtropical China.

show abstract

Biochar-Induced Mitigation Potential of Greenhouse Gas Emissions Was Enhanced under High Soil Nitrogen Availability in Intensively-Irrigated Vegetable Cropping Systems

Cited by 4 publications

References 51 publications

Contributions of Ammonia-Oxidizing Archaea and Bacteria to Nitrous Oxide Production in Intensive Greenhouse Vegetable Fields

Contributions of Ammonia-Oxidizing Archaea and Bacteria to Nitrous Oxide Production in Intensive Greenhouse Vegetable Fields

Impacts of Chicken Manure Biochar on Nitrous Oxide and Methane Emissions from Vegetable Field in Subtropical China

Impacts of High-Frequency Chicken Manure Biochar Application on N2O and CH4 Emissions from Vegetable Field in Subtropical China

Contact Info

Product

Resources

About