Changes in the characteristics of soil dissolved organic matter over time since inter-planting with white clover (Trifolium repens L.) in apple orchards on the Loess Plateau in China

Zhang, Rongqin; Li, Ming; Gao, Xiaodong; Duan, Yumin; Cai, Yaohui; Li, Huike; Zhao, Xining; Wang, Yanping

doi:10.1007/s11104-022-05697-7

Cited by 4 publications

(6 citation statements)

References 58 publications

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“…8, P < 0.05), indicated that high SOC and TN encourage plant development, and increasing litter and photosynthetic C input from plants boosts microbial growth and metabolism [77,78], consequently affects the DOM concentration, this observation is consistent with the reported by Kalbitz et al [6], further confirming that SOM and TN are important factors in soil DOM regulation. These observations are consistent with those reported by Zhang et al [24], demonstrating the major importance of microbial biomass N in soil DOM variations in apple orchards on the Loess Plateau in China. The microbial community structure was changed with increasing wolfberry planting ages from bacteria to fungi [79][80][81], mainly increasing the community density and colonization ability of soil fungi [82].…”

Section: Effects Of the Different Wolfberry Planting Ages On The Soil...supporting

confidence: 93%

“…Therefore, it is necessary to further study the response degree of soil DOM and the change mechanism of chemical composition in different planting years of wolfberry orchard soil. Zhang et al [24] found that cultivation and maintenance of clover in the orchard promoted the accumulation of DOM and the humic-like content, increasing the potential for soil C sequestration, this gives us a good insight. Based on this insight, the present study aims (a) to analyze the changes in the DOM compositions under wolfberry plantations with different planting years; (b) to explore the main factors influencing soil DOM.…”

Section: Introductionmentioning

confidence: 96%

“…Several modern techniques have been used to evaluate the physicochemical characteristics of soil DOM (e.g., molecular weight fractions and components), including ultraviolet-visible (UV-Vis) and three-dimensional (3D) fluorescence spectroscopy [22,23]. Previous studies have shown that UV absorbance at 254 nm (SUVA 254 ) can reflect the aromaticity level of DOM, with higher absorbance indicating higher aromaticity [24][25][26]. Peng et al [25] showed an increase in the SUVA 254 value of DOM in an intercropping soil, indicating high aromaticity and hydrophobicity of DOM under this cropping practice.…”

Section: Introductionmentioning

confidence: 99%

“…The humification index (HIX), fluorescence index (FI), and biological index (BIX) were used in several studies to determine the humification degrees, main sources, and autogenic contributions of DOM, respectively [17,29]. Many studies have assessed DOM characteristics by combining excitation-emission matrices (EEMs) with parallel factor analysis (PARAFAC) [13,24,30]. Zhang et al [14] used the EEMs-PAFAFAC approach and found that interplanting white clover in orchards can effectively improve the accumulation of macromolecular humic-like compounds of DOM, potentially promoting SOC storage.…”

Section: Introductionmentioning

confidence: 99%

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Variations in the quantity and chemical composition of soil dissolved organic matter along a chronosequence of wolfberry plantations in an arid area of Northwest China

Wu,

Xue,

Ndzana

et al. 2024

Chem. Biol. Technol. Agric.

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Background Dissolved organic matter (DOM) is the most active component of soil organic matter (SOM), playing a major role in regulating soil fertility and carbon cycling. However, the effects of different wolfberry (Lycium barbarum L.) planting ages on the chemical diversity of DOM and its interaction with soil physicochemical properties have not been comprehensively studied. In this context, we collected soil samples (0–10 cm) from wolfberry orchards at different planting ages (1, 4, 6, 10, and 13 years) and from a corn field (0 years) in the arid region of Northwest Ningxia in China to assess the changes in soil DOM quantity and quality using ultraviolet–visible absorbance, fluorescence spectroscopy, and parallel factor analysis. Results We found that the ages of the wolfberry plantation changed the contents of soil nutrients and SOM. In addition, significantly higher DOM concentrations were observed at wolfberry planting ages of 10 and 13 years than those in the control group (0 years) by 176.6 and 190.2%, respectively. The specific ultraviolet absorbance at 254 nm (SUVA254) and 254 nm to 365 nm ultraviolet absorbance ratio (E2/E3) values were decreased and increased, respectively, after wolfberry planting, indicating low aromatic and molecular weight compounds of soil DOM. The biogenic index (BIX) and fluorescence index (FI) of soil DOM ranged from 0.6 to 0.7 and 1.42 to 1.93, respectively, suggesting a combination of allochthonous and autochthonous sources. The short- and long-term wolfberry cultivations of 1 and 4 years decreased and increased the humification degrees of soil DOM, respectively. The contribution rate of the protein-like (C1) fluorescence intensity decreased, while that of the fulvic acid-like component (C3) increased with increasing wolfberry planting age, suggesting a change in the structure of soil DOM from protein-like to fulvic acids. In this study, total nitrogen (TN) and exchangeable Ca2+ were the main factors affecting the quantity and quality of soil DOM in the wolfberry orchards with different planting ages. Conclusions This study demonstrated that long-term wolfberry plantation enhances the accumulation of soil DOM and more complex compounds, thereby promoting soil organic carbon sequestration under different planting ages and land-use types in terrestrial ecosystems. Graphical Abstract

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Section: Effects Of the Different Wolfberry Planting Ages On The Soil...supporting

confidence: 93%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Variations in the quantity and chemical composition of soil dissolved organic matter along a chronosequence of wolfberry plantations in an arid area of Northwest China

Wu,

Xue,

Ndzana

et al. 2024

Chem. Biol. Technol. Agric.

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“…It was demonstrated that intercropping marigold could significantly increase and maintain the moisture content of apple rhizosphere soils by providing soil shading ( Table 1 ). Mulching practice plays an important role in decreasing soil evaporation ( Zhang et al, 2022 ). Soil nutrients are closely related to fruit yield and quality and sustainable production in orchards ( Wei et al, 2017 ).…”

Section: Discussionmentioning

confidence: 99%

Apple-marigold intercropping improves soil properties by changing soil metabolomics and bacterial community structures

Xue

Chen

et al. 2023

Front. Microbiol.

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Marigold can protect crops against soil-borne diseases. However, the effects of intercropping with marigold on apple rhizosphere soils are not known. In this study, we investigated the metabolite profiles and bacterial community structures in rhizosphere soils of the apple-marigold intercropping system by high-throughput sequencing and soil metabolomics. The results show that intercropping marigold could significantly enhance soil moisture, nitrogen, and enzyme activities compared with clean tillage. The soil metabolite profiles and the soil bacterial community structures in the rhizosphere soils were different between the inter-and mono-cropping systems. Among nine metabolites, carbohydrates were more increased in the intercropping system than in the monocropping system. Pathway enrichment analysis revealed that the greatest differential, in terms of metabolic pathway, was starch and sucrose metabolism. Moreover, intercropping marigold significantly increased the relative abundance of plant growth promoting bacteria in rhizosphere soils, such as Rhizobiales, Pseudomonadales, and Bacillales. These results indicate that marigold intercropping positively affected the apple orchard’s soil quality and may provide a new intercropping technique to improve soil fertility in orchards and promote plant growth.

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Synergizing production and ecology: innovations in sustainable dryland agriculture

Zhao,

He,

Siddique

et al. 2024

Plant Soil

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Changes in the characteristics of soil dissolved organic matter over time since inter-planting with white clover (Trifolium repens L.) in apple orchards on the Loess Plateau in China

Cited by 4 publications

References 58 publications

Variations in the quantity and chemical composition of soil dissolved organic matter along a chronosequence of wolfberry plantations in an arid area of Northwest China

Variations in the quantity and chemical composition of soil dissolved organic matter along a chronosequence of wolfberry plantations in an arid area of Northwest China

Apple-marigold intercropping improves soil properties by changing soil metabolomics and bacterial community structures

Synergizing production and ecology: innovations in sustainable dryland agriculture

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