Abstract
To address the adjustment of the Chinese agricultural industry and to better promote the development of Chinese household biogas, this article summarizes and analyzes the spatial distribution characteristics and influencing factors of the type and number of biogas digesters, biogas production, biogas fermentation materials, and methods of fermentation residue utilization and ecological agriculture with household biogas by compiling a dataset covering 31 provincial administrative regions in China. The results show that hydraulic biogas digesters are distributed mainly in northwestern and northeastern China; in addition, continuously stirred biogas digesters and bottom-discharging biogas digesters are distributed mainly in southern and northern China, respectively. Because of temperature and population, the Sichuan and Henan Provinces have the highest number of biogas digesters and biogas production. The type of biogas fermentation materials depends on the local raw materials. Biogas slurry and residue are widely used as fertilizers; furthermore, biogas slurry is used for seed soaking in northeastern and southern China, and biogas residue is used as feed in central southern and northern China. The “Three-in-one” and “Four-in-one” biogas ecological models are used mostly in southern and northern China, respectively, and both are mainly affected by temperature. Finally, we propose various problems and countermeasures to enhance the development of the household biogas industry in China. Our findings are critical for China’s policymakers to adopt effective measures for promoting the development of cleaner energy and the layout of the agricultural industry.
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This work was financially supported by the Scientific Research Funds for Hainan University (grant numbers: KYQD(ZR)1850, KYQD(ZR)1848).
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CL and CL contributed to the study conception, design, methodology, and project administration. ZL and CL analyzed the data and wrote the original draft. ZL, CL, XJ, SL, JC, SY, GH, WC, XS, RJ, JY, DS, CL, and CL performed the investigation and data collection and commented on previous versions of the manuscript. CL and CL provided a review and modification. ZL, CL, XJ, SL, JC, SY, GH, WC, XS, RJ, JY, DS, CL, and CL read and approved the final manuscript.
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Liang, ., Lan, C., Jin, X. et al. Spatial distribution and influencing factors of China’s household biogas: evidence from provincial-level data. Environ Sci Pollut Res 30, 110119–110132 (2023). https://doi.org/10.1007/s11356-023-30069-8
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DOI: https://doi.org/10.1007/s11356-023-30069-8