Research progress on sludge land use and response mechanisms of soil organic carbon

ZHANG Yiyang; GAO Bingjie; ZHOU Xiaoguo; CHEN Xiang; DONG Bin; CAI Chen

doi:10.13205/j.hjgc.202506001

Volume 43 Issue 6

Jun. 2025

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ZHANG Yiyang, GAO Bingjie, ZHOU Xiaoguo, CHEN Xiang, DONG Bin, CAI Chen. Research progress on sludge land use and response mechanisms of soil organic carbon[J]. ENVIRONMENTAL ENGINEERING , 2025, 43(6): 1-12. doi: 10.13205/j.hjgc.202506001

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ZHANG Yiyang, GAO Bingjie, ZHOU Xiaoguo, CHEN Xiang, DONG Bin, CAI Chen. Research progress on sludge land use and response mechanisms of soil organic carbon[J]. ENVIRONMENTAL ENGINEERING , 2025, 43(6): 1-12. doi: 10.13205/j.hjgc.202506001

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Research progress on sludge land use and response mechanisms of soil organic carbon

doi: 10.13205/j.hjgc.202506001

1. College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China;
2. Yangtze River Ecology and Environmental Protection Group Co., Ltd., Technology Center, Wuhan 430014, China;
3. China Yangtze Three Gorges Corporation, Yangtze River Economic Belt Ecological Environment National Engineering Research Center, Wuhan 430010, China

Received Date: 2024-12-28
Accepted Date: 2025-02-15
Rev Recd Date: 2025-01-23

Abstract

Abstract

Urban sludge treatment and disposal in China have entered a new phase， shifting from simple treatment to resource utilization. The application of stabilized sludge in land use has been shown to positively contribute to the accumulation and sequestration of soil organic carbon （SOC）. This paper reviewed the methods， standards， and mechanisms of SOC response in sludge land use， and found that sludge land use not only improved soil properties but also effectively enhanced SOC content. By comparing different application methods， it was found that the combined approach integrating landscaping and ecological restoration demonstrated significant development potential. The mechanisms underlying the impact of sludge land use on SOC were further summarized， including aspects of sludge organic matter composition， physicochemical processes， and microbial drivers. In terms of physicochemical process， sludge application significantly altered soil structure and pH， thereby influencing SOC transformation and sequestration. Regarding microbial processes， changes in microbial communities and functions following sludge application are key factors affecting SOC turnover， with microbial residues playing a critical role in SOC accumulation. By systematically reviewing relevant research progress domestically and internationally， this study can provide theoretical support and guidance for the sustainable management and land use of sludge.
- sludge land use,
- soil organic carbon,
- sludge components,
- microbial community,
- functional gene

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References(80)

References

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