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Livestock manure-derived hydrochar is more inclined to mitigate soil Global Warming Potential than raw materials based on soil stoichiometry analysis

文献类型： 外文期刊

作者： Feng, Yuanyuan 1 ; Wang, Ning 1 ; Xie, Huifang 4 ; Li, Jing 1 ; Li, Guanlin 5 ; Xue, Lihong 1 ; Fu, Haibin 1 ; Feng, Yanfang 1 ; Poinern, Gerrard Eddy Jai 3 ; Chen, Deli 6 ;

作者机构： 1.Minist Agr & Rural Affairs, Key Lab Agroenvironm Downstream Yangtze Plain, Natl Agr Expt Stn Agr Environm Luhe, Beijing, Peoples R China

2.Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, Nanjing 210014, Peoples R China

3.Murdoch Univ, Coll Sci, Murdoch Appl Innovat Nanotechnol Res Grp, Hlth Engn & Educ, Perth, WA 6150, Australia

4.Nanjing Univ Sci & Technol, Sch Environm & Biol Engn, Jiangsu Key Lab Chem Pollut Control & Resources Re, Nanjing 210094, Peoples R China

5.Jiangsu Univ, Inst Environm Hlth & Ecol Secur, Sch Environm & Safety Engn, Zhenjiang 212013, Peoples R China

6.Univ Melbourne, Fac Vet & Agr Sci, Sch Agr & Food, Melbourne, Vic 3010, Australia

关键词： Manure-derived hydrochar; Soil stoichiometry; Methane; Nitrous oxide; Microbial biomass; Agricultural application

期刊名称：BIOLOGY AND FERTILITY OF SOILS （ 影响因子：6.5； 五年影响因子：6.9 ）

ISSN： 0178-2762

年卷期： 2023 年 59 卷 4 期

页码：

收录情况： SCI

摘要： Hydrothermal carbonization is a green and sustainable efficient technology for treating manure-based wet waste and achieving nutrient recovery. Agricultural application of its products (hydrochar) disrupts the soil's original stoichiometric balance and affects greenhouse gas emissions. However, relationships between soil stoichiometry with methane (CH4) and nitrous oxide (N2O) efflux under manure and manure-derived hydrochar application remain unclarified. Pig and cattle manure (PM and CM) and their derived hydrochar (PCs and CCs) were added into agricultural soils to investigate relationships between soil stoichiometry and manure-derived hydrochar input as well as soil CH4 and N2O efflux through incubation experiments. The results showed that PCs and CCs addition increased soil organic carbon and total phosphorus by 8-14% and 12-35%, respectively, compared to PM and CM. Moreover, PCs reduced CH4 efflux by 58-99%, whereas PCs at low doses (0.5%, w/w) increased N2O efflux by 30-202% relative to PM. Manure-derived hydrochar at high doses (1.5%, w/w) reduced global warming potential relative to manure. Furthermore, feedstock and temperature of manure-derived hydrochar were essential factors for soil CH4 and N2O efflux. Our findings contribute to a better understanding of the impacts of manure-derived organic matter-induced changes in soil stoichiometry on greenhouse gas emissions from agricultural sources.

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