Effects of an integrated rice-crayfish farming system on soil organic carbon, enzyme activity, and microbial diversity in waterlogged paddy soil

Si, Guohan; Yuan, Jiafu; Xu, Xiangyu; Zhao, S. J.; Peng, Chenglin; Wu, Jinshui; Zhong-quan, Zhou

doi:10.1016/j.chnaes.2018.01.005

Cited by 50 publications

(33 citation statements)

References 14 publications

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“…It has been proposed that RC systems help to alleviate resource scarcity (especially land and water), and increase farmer income 13, 14 – increasing net profit by ca. 40 188 yuan ha −1 compared with RM cultivation 15 . Moreover, RC soils have been found to hold more soil organic matter (SOM) than RM soils at 20–40 cm depth, and higher proportions of gram negative bacteria, aerobic bacteria, and fungi in the 20–30 cm soil layer 11, 15 .…”

Section: Introductionmentioning

confidence: 99%

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The sustainability of rice‐crayfish coculture systems: a mini review of evidence from Jianghan plain in China

et al. 2021

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BACKGROUND Rice‐crayfish coculture (RC) uses 10% of the paddy field area for crayfish ditches, with rice cultivated in the remaining area, providing staple carbohydrates alongside fish rich in protein and essential oils. These systems rely on complex interactions, involving nutrient cycling, fish feeding, soil physicochemical modification, and insect‐pest predation, and have important socio‐economic effects. Past studies have considered only one or a few of these aspects pertinent to food system sustainability, and there remains a need for an integrated assessment of RC systems. In this mini‐review, we collate data from two field experiments and three field surveys published across eight papers to synthesize the overall sustainability of RC systems in Jianghan Plain in China. RESULTS In deep groundwater fields, the RC rice yield was 30–55% lower than for typical rice‐rapeseed (RR) rotations, while CH4 emission and pesticide use were 41–96% and 50% lower, respectively. In shallow groundwater fields, RC rice yield was similar to typical rice monoculture (RM) cultivation, while CH4 emission and pesticide use were 28–41% and 17% lower for RC cultivation. Field survey data indicated that RC can improve soil nutrient and organic matter content significantly compared with RM cultivation, and also increase the diversity of fauna and flora in the paddy field whilst reducing the incidence of chilo suppressalis (a major rice pest). Feed inputs to RC systems increased crayfish yield by 31–71% and reduced the fraction of N inputs lost to the environment from 71% to 41%. CONCLUSION We conclude that RC systems with feed inputs in areas with shallow groundwater can deliver improved food security, sustainability, and resilience through ecological intensification. © 2020 Society of Chemical Industry

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Section: Introductionmentioning

confidence: 99%

“…40 188 yuan ha −1 compared with RM cultivation 15 . Moreover, RC soils have been found to hold more soil organic matter (SOM) than RM soils at 20–40 cm depth, and higher proportions of gram negative bacteria, aerobic bacteria, and fungi in the 20–30 cm soil layer 11, 15 . Yuan et al 16 .…”

Section: Introductionmentioning

confidence: 99%

The sustainability of rice‐crayfish coculture systems: a mini review of evidence from Jianghan plain in China

et al. 2021

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“…While crayfish dig burrows increasing soil permeability and material/energy circulation and its feces used as high-quality fertilizer and thereby, advance the rice growth. Literatures have demonstrated that CR model significantly affects chemical and biological processes of belowground and increase soil microbial biomass comparing to the monoculture (Si et al 2017b;Cai et al 2019). In 2018, CR model has been practiced to an area of approximately 200,000 hm 2 mostly in subtropical China, showing the significant economic and social benefits (Cao et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Gut microbiota of red swamp crayfish Procambarus clarkii in integrated crayfish-rice cultivation model

Zhang

et al. 2020

AMB Expr

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Increasing evidences suggest that intestinal microbiota balance closely correlated with host's health status could affected by external environment. Integrated crayfish-rice cultivation model is a highly efficient artificial ecosystem widely practiced in subtropical China. Less information is available to estimate the influence response to the micro-ecology of crayfish intestine and so as to influence the biological processes. Thus, 16S rRNA high-throughput sequencing approach was employed to investigate the composition diversity and functions of bacterial community in the intestines of Procambarus clarkii farmed within this model. Results exhibited the highly diversity of microflora with dominant phyla Actinobacteria, Proteobacteria, Tenericutes, Firmicutes and Bacteroidetes. The genera of Candidatus Bacilloplasma and Ornithinibacter were presented as predominant population much exceeds in richness comparing to that of other genus. Despite the highly diversity in the bacterial community, the predicted functions indicated relative consistent in biological processing pathway. Collectively, significant richness of genes was observed involved in amino acid and carbohydrate metabolism and membrane transport processing. This study would contribute to the understanding of the impact of growth conditions on host-microbiota relation especially in aquatic animals.

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“…Soil carbon is affected by many physical, biological and human factors, such as climate, vegetation, physical and chemical soil characteristics and human activities, and the interaction between these factors is especially important, which is crucial to the dynamic changes in soil carbon [ 21 , 22 , 23 ]. Soil has become an important priority area in the study of the carbon cycle and global change in terrestrial ecosystems [ 24 , 25 , 26 ]. The soil carbon cycle and soil microbial community were found to respond to elevated atmospheric CO 2 concentrations [ 27 ].…”

Section: Introductionmentioning

confidence: 99%

Soil Bacterial Diversity and Its Relationship with Soil CO2 and Mineral Composition: A Case Study of the Laiwu Experimental Site

Zhang¹,

Gao²,

Shi³

et al. 2020

IJERPH

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To better understand the characteristics of soil bacterial diversity in different environments, the Laiwu Qilongwan experimental site was selected as it is of great significance for the study of geochemical cycles. The soil CO2, mineral composition and bacterial community were analyzed by an EGM-4 portable environmental gas detector, an X-ray diffractometer and 16S rDNA high-throughput sequencing, and soil bacterial diversity and the relationship between soil bacterial diversity and environmental factors were studied. The results showed that with increasing soil depth, the CO2 content increased, the feldspar and amphibole contents increased, the quartz content decreased, the richness of the soil bacterial community increased, the relative richness of Nitrospirae increased, and Chloroflexi decreased. The dominant bacteria were Proteobacteria, Actinobacteria and Acidobacteria. There were slight differences in soil CO2, mineral composition and dominant bacterial flora at the same depth. Actinobacteria, Proteobacteria and Firmicutes were the dominant phyla of L02. The CO2 was lowest in bare land, and the quartz and K-feldspar contents were the highest. Soil CO2 mainly affected the deep bacterial diversity, while shallow soil bacteria were mainly affected by mineral components (quartz and K-feldspar). At the same depth, amphibole and clay minerals had obvious effects on the bacterial community, while CO2 had obvious effects on subdominant bacteria.

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Effects of an integrated rice-crayfish farming system on soil organic carbon, enzyme activity, and microbial diversity in waterlogged paddy soil

Cited by 50 publications

References 14 publications

The sustainability of rice‐crayfish coculture systems: a mini review of evidence from Jianghan plain in China

The sustainability of rice‐crayfish coculture systems: a mini review of evidence from Jianghan plain in China

Gut microbiota of red swamp crayfish Procambarus clarkii in integrated crayfish-rice cultivation model

Soil Bacterial Diversity and Its Relationship with Soil CO2 and Mineral Composition: A Case Study of the Laiwu Experimental Site

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