Effects of pyrolysis temperature and feedstock type on biochar characteristics pertinent to soil carbon and soil health: A meta‐analysis

Li, Lidong; Long, Amelia; Fossum, Britt; Kaiser, Michael

doi:10.1111/sum.12848

Cited by 45 publications

(21 citation statements)

References 60 publications

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“…See Table S2 for each grouping factor. The meta-analyses were conducted with RStudio (2023.06.1, Posit Software, PBC), following the procedures by Li, Long, et al (2023) and Harrer et al (2021). We used a random-effects model for standardized mean difference (SMD).…”

Section: Meta-analysismentioning

confidence: 99%

Soil N₂O emissions from specialty crop systems: A global estimation and meta‐analysis

Li,

Hong,

Zhang

et al. 2024

Global Change Biology

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Nitrous oxide (N2O) exacerbates the greenhouse effect and thus global warming. Agricultural management practices, especially the use of nitrogen (N) fertilizers and irrigation, increase soil N2O emissions. As a vital sector of global agriculture, specialty crop systems usually require intensive input and management. However, soil N2O emissions from global specialty crop systems have not been comprehensively evaluated. Here, we synthesized 1137 observations from 114 published studies, conducted a meta‐analysis to evaluate the effects of agricultural management and environmental factors on soil N2O emissions, and estimated global soil N2O emissions from specialty crop systems. The estimated global N2O emission from specialty crop soils was 1.5 Tg N2O‐N year−1, ranging from 0.5 to 4.5 Tg N2O‐N year−1. Globally, soil N2O emissions exponentially increased with N fertilizer rates. The effect size of N fertilizer on soil N2O emissions generally increased with mean annual temperature, mean annual precipitation, and soil organic carbon concentration but decreased with soil pH. Global climate change will further intensify the effect of N fertilizer on soil N2O emissions. Drip irrigation, fertigation, and reduced tillage can be used as essential strategies to reduce soil N2O emissions and increase crop yields. Deficit irrigation and non‐legume cover crop can reduce soil N2O emissions but may also lower crop yields. Biochar may have a relatively limited effect on reducing soil N2O emissions but be effective in increasing crop yields. Our study points toward effective management strategies that have substantial potential for reducing N2O emissions from global agricultural soils.

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Section: Meta-analysismentioning

confidence: 99%

Soil N₂O emissions from specialty crop systems: A global estimation and meta‐analysis

Li,

Hong,

Zhang

et al. 2024

Global Change Biology

Self Cite

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“…In recent years, biochar has attract attention because it offers a wide variety of soil health benefits (Abel et al, 2013), such as supplying slow‐release nutrients, mitigating climate change by carbon sequestration and reducing soil contaminant leaching and bioavailability (Hou et al, 2023; Wang, Deng, et al, 2023). However, the effect of biochar on soil health depends on its feedstock and production conditions (Li et al, 2023). Therefore, to ensure sound soil health management, appropriate feedstock type, pyrolysis temperature and application rate must be selected to match with specific site soil characteristics.…”

Section: Soil Amendment and Soil Health Managementmentioning

confidence: 99%

Soil health and ecosystem services

Hou

2023

Soil Use and Management

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“…The main reason for the alkaline pH value of biochar is that the materials used to make biochar contain a variety of plant acids, and the raw materials are acidic. However, during the pyrolysis process, the biological acids are continuously broken down, resulting in a continuous increase in the pH of the biochar [43]. In addition, the concentration of these mineral elements gradually increases, making the biochar alkaline [44].…”

Section: Characteristics Of the Five Plant-based Biocharsmentioning

confidence: 99%

Capacity and Mechanisms of Pb(II) and Cd(II) Sorption on Five Plant-based Biochars

Yu¹,

Sun²,

Pei³

et al. 2023

Preprint

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China is a large agricultural country that produces a large amount of crop straw every year. Thus, the development of cost-effective and economic application of invasive plants is warranted. Biochars derived from crop straw has been proven to be promising for adsorbent materials. However, less studies have focused on biochar derived from different types of crop straw as adsorbent under the same conditions to compare their adsorption performance. Here, we characterized the five biochars in the same system (600 ℃). In results, GBC has higher ash content, pH, CEC, specific surface area, mineral composition and oxygen-containing functional groups. The adsorption kinetics can be explained adequately by pseudo-second-order model and Langmuir model, indicating that the adsorption behavior of the biochar is both physical adsorption and chemical adsorption, the adsorption process includes complexation reaction, cationic π bond, ion precipitation and electrostatic adsorption. In conclusion, GBC exhibited higher metal equilibrium adsorption capacities (125 mg·g-1 for Pb2+, 29 mg·g-1 for Cd2+). The solution pH, biochar dosing, pyrolysis temperature and the properties of these heavy metals were responsible for adsorption capacity, thus showing stronger affinity and better adsorption effect. Our results are important for the selection and utilization of plant-based biochar for different heavy metals.

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Effects of pyrolysis temperature and feedstock type on biochar characteristics pertinent to soil carbon and soil health: A meta‐analysis

Abstract: Biochar amendment to soil is utilized globally as an approach to enhance carbon storage and to improve soil functioning. However, biochar characteristics and related improvements of soil functioning depend on biochar production conditions.

Cited by 45 publications

References 60 publications

Soil N₂O emissions from specialty crop systems: A global estimation and meta‐analysis

Soil N₂O emissions from specialty crop systems: A global estimation and meta‐analysis

Soil health and ecosystem services

Capacity and Mechanisms of Pb(II) and Cd(II) Sorption on Five Plant-based Biochars

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Effects of pyrolysis temperature and feedstock type on biochar characteristics pertinent to soil carbon and soil health: A meta‐analysis

Abstract: Biochar amendment to soil is utilized globally as an approach to enhance carbon storage and to improve soil functioning. However, biochar characteristics and related improvements of soil functioning depend on biochar production conditions.

Cited by 45 publications

References 60 publications

Soil N2O emissions from specialty crop systems: A global estimation and meta‐analysis

Soil N2O emissions from specialty crop systems: A global estimation and meta‐analysis

Soil health and ecosystem services

Capacity and Mechanisms of Pb(II) and Cd(II) Sorption on Five Plant-based Biochars

Contact Info

Product

Resources

About

Soil N₂O emissions from specialty crop systems: A global estimation and meta‐analysis

Soil N₂O emissions from specialty crop systems: A global estimation and meta‐analysis