Long-term rice-crayfish co-culture farming system benefits soil organic carbon storage and soil quality in the Jianghan Plain, China

Long-term rice-crayfish co-culture farming system benefits soil organic carbon storage and soil quality in the Jianghan Plain, China | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed. Data may be preliminary. 25 February 2025 V1 Latest version Share on Long-term rice-crayfish co-culture farming system benefits soil organic carbon storage and soil quality in the Jianghan Plain, China Authors : Feng He 0009-0004-2122-107X , Jie Zhu , Yi Xu , Yong Zhou , Hongrui Dong , Qingyun Xie , Mengdie Jiang , Lixia Yi , Jiangwen Nie [email protected] , Bo Zhu , and Zhangyong Liu Authors Info & Affiliations https://doi.org/10.22541/au.174048706.69901384/v1 Published Journal of Soil Science and Plant Nutrition Version of record Peer review timeline 183 views 95 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract The rice-crayfish (RC) integrated farming system has been recognized for improving spatial efficiency, diversifying food chains, and enhancing biodiversity. However, the long-term impacts of RC co-culture on soil organic carbon stock (SOCS), total nitrogen stock (TNS) and soil quality index (SQI), across different soil depths remain poorly understood. Thus, we conducted an 8-year field study in the Jianghan Plain, comparing the SOCS and SQI in the topsoil (0-20 cm) and subsoil (20-40 cm) of rice monoculture (RM) and the RC system. Our findings indicate that the RC system increased SQI by 38.6% and SOCS by 27.5% in the topsoil, while it increased TNS by 15.9% and SQI by 17.5% in the subsoil. The RC system enhanced soil pH, SOC, dissolved organic carbon (DOC), and available phosphorus (AP) across the 0-40 cm profile, and raised the concentrations of ammonium nitrogen (NH 4 + -N) and dissolved organic nitrogen (DON) in the topsoil. Conversely, RC decreased DON and bulk density (BD) in the subsoil. Additionally, RC reduced all three soil enzyme activities (sucrose hydrolase, nitrate reductase, and phosphatase enzyme) in both topsoil and subsoil, suggesting that changes in the soil environment, such as flooding, induced by rice-crayfish integrated farming may negatively impact soil health. Furthermore, we observed a positive correlation between soil quality and soil nutrients, indicating that the diversified residue input from the RC system may be crucial for improving soil quality by enhancing soil nutrients, metabolic potential, and carbon sequestration. Our study underscores the potential of the RC system to enhance soil quality and carbon sequestration, offering valuable insights for sustainable agricultural practices and long-term soil management. Supplementary Material File (figures.docx) Download 2.95 MB File (manuscript.docx) Download 63.34 KB File (table.docx) Download 13.92 KB Information & Authors Information Version history V1 Version 1 25 February 2025 Peer review timeline Published Journal of Soil Science and Plant Nutrition Version of Record 10 Nov 2025 Published Copyright This work is licensed under a Non Exclusive No Reuse License. Keywords soil ecosystem multifunctionality enzyme activities microbial nutrient limitation rice-crayfish co-culture system soil quality Authors Affiliations Feng He 0009-0004-2122-107X Yangtze University View all articles by this author Jie Zhu Xiangyang Academy of Agricultural Sciences View all articles by this author Yi Xu China Agricultural University College of Agronomy and Biotechnology View all articles by this author Yong Zhou Hubei Engineering University View all articles by this author Hongrui Dong Yangtze University View all articles by this author Qingyun Xie Yangtze University View all articles by this author Mengdie Jiang Yangtze University View all articles by this author Lixia Yi Yangtze University View all articles by this author Jiangwen Nie [email protected] Yangtze University View all articles by this author Bo Zhu Yangtze University View all articles by this author Zhangyong Liu Yangtze University View all articles by this author Metrics & Citations Metrics Article Usage 183 views 95 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Feng He, Jie Zhu, Yi Xu, et al. Long-term rice-crayfish co-culture farming system benefits soil organic carbon storage and soil quality in the Jianghan Plain, China. Authorea . 25 February 2025. DOI: https://doi.org/10.22541/au.174048706.69901384/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. For more information or tips please see 'Downloading to a citation manager' in the Help menu . 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