Effects of Different Intercropping Methods
on Soil Organic Carbon and Aggregate Stability
in Sugarcane Field

Hu, Lening; Huang, Rui; Hua, Dengxin; Li, Ké; Peng, Jiayu; LiuQiang, Zhou; Ou, Haiyan

doi:10.15244/pjoes/147187

Cited by 7 publications

(5 citation statements)

References 34 publications

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“…Generally, intercropping could affect microbial diversity and ecosystem functions via its effect in soil properties ( Nyawade et al, 2019b ; Curtright and Tiemann, 2021 ). Intercropping can affect the content and distribution of soil aggregates to improve soil physicochemical properties ( Hu et al, 2022 ). For instance, soil macro-and microaggregates are higher in maize/faba bean or maize/pigeon pea intercropping systems than in the monocropping system of maize ( Garland et al, 2016 ; Tian et al, 2019 ), which could further increase soil stability ( Tong et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Intercropping enhances microbial community diversity and ecosystem functioning in maize fields

et al. 2023

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Background and aims:Intercropping, a widely used planting pattern, could affect soil physicochemical properties, microbial community diversity, and further crop yields. However, its impacts on soil microbial diversity and ecosystem functioning and further soil sustainability are poorly understood.Methods:We conducted field experiments by intercropping maize with four important crops (i.e., sesame, peanut, soybean, and sweet potato), and examined soil microbial community diversity and ecosystem functioning such as microbial biomass and enzyme activities under monocropping and intercropping. We quantified their intercropping effects on microbial diversity and ecosystem functions with effect size metric Cohen d by comparing to the monocropping of maize.Results:We found that the four intercropping systems significantly increased soil aggregates in respective of the 2–0.25 mm grain size. Intercropping consistently elevated ecosystem functioning, such as soil enzyme activities of urease, phosphatase, and catalase, soil microbial biomass carbon and soil microbial biomass nitrogen. The Cohen d of bacterial richness also increased from 0.39 to 2.36, the latter of which was significant for maize/peanut intercropping. Notably, these ecosystem functions were strongly associated with the diversity of bacteria and fungi and the relative abundance of their ecological clusters identified with network analysis.Conclusion:Together, our findings indicate that intercropping generally affected soil physicochemical properties, ecosystem functions, and promoted microbial community diversity. More importantly, our findings highlight the important roles of microbial diversity of ecological clusters (that is, network modules) in maintaining ecosystem functioning after intercropping. These results will help to better understand the microbial diversity and ecosystem function in intercropping systems and guide agricultural practice.

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Section: Introductionmentioning

confidence: 99%

Intercropping enhances microbial community diversity and ecosystem functioning in maize fields

et al. 2023

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“…In this study, Correlation between physical and chemical properties, carbon composition, enzyme activity and mineralization of (A) OBC-Mg and (B) OBC-Mg. Hu et al 10.3389/fmicb.2023.1109272 Frontiers in Microbiology 14 frontiersin.org the MBC was significantly and positively correlated with the cumulative mineralization of organic carbon, indicating that the mineralization of soil organic carbon also affects the MBC. Soil dissolved organic carbon (DOC) is the most active component of SOC and an important source of organic carbon and an important indicator of soil microbial effectiveness (Hu et al, 2022). In this study, application of OBC and OBC-Mg to citrus orchard soil increased DOC content and showed an overall decreasing trend with increasing incubation time.…”

Section: Effect Of Biochar On Different Carbon Fractions In Citrus Or...mentioning

confidence: 79%

Effects of magnesium-modified biochar on soil organic carbon mineralization in citrus orchard

Huang²,

Zhou³

et al. 2023

Front. Microbiol.

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In order to investigate the carbon sequestration potential of biochar on soil, citrus orchard soils with a forest age of 5 years was taken as the research object, citrus peel biochar (OBC) and magnesium-modified citrus peel biochar (OBC-mg) were selected as additive materials, and organic carbon mineralization experiments were carried out in citrus orchard soil. OBC and OBC-Mg were applied to citrus orchard soils at four application rates (0, 1, 2, and 4%), and incubated at a constant temperature for 100 days. Compared with CK, the cumulative mineralization of soil organic carbon decreased by 5.11% with 1% OBC and 2.14% with 1% OBC-Mg. The application of OBC and OBC-Mg significantly increased the content of soil organic carbon fraction, while the content of soil organic carbon fraction was higher in OBC-Mg treated soil than in OBC treated soil. Meanwhile, the cumulative mineralization of soil organic carbon was significantly and positively correlated with the activities of soil catalase, urease and sucrase. The enzyme activities increased with the cumulative mineralization of organic carbon, and the enzyme activities of the OBC-Mg treated soil were significantly higher than those of the OBC treated soil. The results indicated that the OBC-Mg treatment inhibited the organic carbon mineralization in citrus orchard soils and was more favorable to the increase of soil organic carbon fraction. The Mg-modified approach improved the carbon sequestration potential of biochar for citrus orchard soils and provided favorable support for the theory of soil carbon sink in orchards.

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“…In contrast to the moso bamboo monoculture, intercropping induced an increase in soil organic carbon, total N, and P in the topsoil, which was verified in multiple agroforestry systems [46,47]. Several studies indicated that dead plant matter and root exudates were important sources of soil organic matter; the presence of more dead matter and roots in the intercropping systems increased the inputs of organic matter into the soil [48,49].…”

Section: Effects Of Intercropping On Soil Propertiesmentioning

confidence: 90%

Moso Bamboo–Polygonatum cyrtonema Agroforestry Systems: Evaluation of Soil Quality and Polygonatum Yield

Fei

et al. 2023

Forests

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Agroforestry has great potential for improving the ecological environment and raising the ecosystem productivity. This study is aim to evaluate the soil quality of bamboo forest and identify the main site factor that influencing the yield of Polygonatum tubers following the agroforestry practices. Four intercropping modes with different culm densities were conducted in Anhui, East China. The minimum data set method (MDS) was applied to evaluate soil quality index (SQI). Based on principal component analysis (PCA), microbial biomass carbon (MBC), available potassium (AK), altitude, and pH were selected as the MDS. The results showed that intercropping significantly increased SQI compared with moso bamboo monoculture. The mode M1(1750 culms/ha) was significantly better than other modes in improving soil fertility and increasing the yield of Polygonatum tubers. Results from random forest and structural equation model (SEM) showed the direct path coefficient of density on Polygonatum tubers yield was the largest, which was −0.83. Altitude, soil organic carbon (SOC) and nitrate nitrogen (NO3−-N) had a small impact, with direct path coefficient of 0.16, 0.10, and 0.15 (p < 0.05), respectively. Our findings provide a theoretical basis for managing the moso bamboo and P. cyrtonema agroforestry system in a more effective manner.

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Effects of Different Intercropping Methods on Soil Organic Carbon and Aggregate Stability in Sugarcane Field

Cited by 7 publications

References 34 publications

Intercropping enhances microbial community diversity and ecosystem functioning in maize fields

Intercropping enhances microbial community diversity and ecosystem functioning in maize fields

Effects of magnesium-modified biochar on soil organic carbon mineralization in citrus orchard

Moso Bamboo–Polygonatum cyrtonema Agroforestry Systems: Evaluation of Soil Quality and Polygonatum Yield

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