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Volume 16 Issue 2
Apr.  2025
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DING Yiming, DONG Xiaojie, MA Zhize, HUANG Guangyao, REN Mingxun, WANG Wenjuan. Distribution characteristics and influencing factors of abundant and rare microbial communities in Kapok-rice agroforestry systems[J]. Journal of Tropical Biology, 2025, 16(2): 270-280. doi: 10.15886/j.cnki.rdswxb.20240118
Citation: DING Yiming, DONG Xiaojie, MA Zhize, HUANG Guangyao, REN Mingxun, WANG Wenjuan. Distribution characteristics and influencing factors of abundant and rare microbial communities in Kapok-rice agroforestry systems[J]. Journal of Tropical Biology, 2025, 16(2): 270-280. doi: 10.15886/j.cnki.rdswxb.20240118

Distribution characteristics and influencing factors of abundant and rare microbial communities in Kapok-rice agroforestry systems

doi: 10.15886/j.cnki.rdswxb.20240118
  • Received Date: 2024-07-20
  • Rev Recd Date: 2024-09-09
  • Soil microorganisms play an important role in agricultural ecosystem functions. However, there is still a limited understanding of the spatial distribution patterns of soil microbial communities in agroforestry systems,especially for abundant and rare taxa. Kapok-rice agroforestry system, a traditional agroforestry system, has long been practiced in tropical areas. In this context an analysis and comparison were made of the spatial distribution patterns of abundant and rare bacterial and fungal communities along distance gradients to Kapok and their relationships with soil factors in such agroforestry system located in Changjiang County, Hainan Province. The results showed that the richness of rare bacteria was significantly higher near Kapok, while the Shannon index of abundant bacteria and fungi were significantly lower near Kapok(P<0.05). Compositions of abundant and rare bacterial and fungal communities varied significantly with distance gradients to Kapok(ANOSIM: P=0.0001).The α-diversity of abundant bacteria was significantly negatively correlated with available potassium, while the α-diversity of rare bacteria was significantly positively correlated with total potassium and soil organic matters. The α-diversity of abundant fungi was not significantly correlated with any soil factor, while the α-diversity of rare fungi was significantly positively correlated with soil available nitrogen and phosphorus and soil organic matters.Soil available nutrients were the dominant driving factors of the variations of abundant bacterial and fungal community structures, while both soil available nutrients and soil organic matter were the driving factors affecting the variations of rare bacterial and fungal community structures. Among these soil factors, the soil available potassium was the most important driver of the distribution patterns of both abundant and rare microorganisms.This study reveals the effect of Kapok on distribution characteristics of different soil microbial taxa in the rice field and their driving factors in the Kapok-rice agroforestry system, which might provide theoretical support for the application of the Kapok-rice agroforestry system in agricultural sustainable development.
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Distribution characteristics and influencing factors of abundant and rare microbial communities in Kapok-rice agroforestry systems

doi: 10.15886/j.cnki.rdswxb.20240118

Abstract: Soil microorganisms play an important role in agricultural ecosystem functions. However, there is still a limited understanding of the spatial distribution patterns of soil microbial communities in agroforestry systems,especially for abundant and rare taxa. Kapok-rice agroforestry system, a traditional agroforestry system, has long been practiced in tropical areas. In this context an analysis and comparison were made of the spatial distribution patterns of abundant and rare bacterial and fungal communities along distance gradients to Kapok and their relationships with soil factors in such agroforestry system located in Changjiang County, Hainan Province. The results showed that the richness of rare bacteria was significantly higher near Kapok, while the Shannon index of abundant bacteria and fungi were significantly lower near Kapok(P<0.05). Compositions of abundant and rare bacterial and fungal communities varied significantly with distance gradients to Kapok(ANOSIM: P=0.0001).The α-diversity of abundant bacteria was significantly negatively correlated with available potassium, while the α-diversity of rare bacteria was significantly positively correlated with total potassium and soil organic matters. The α-diversity of abundant fungi was not significantly correlated with any soil factor, while the α-diversity of rare fungi was significantly positively correlated with soil available nitrogen and phosphorus and soil organic matters.Soil available nutrients were the dominant driving factors of the variations of abundant bacterial and fungal community structures, while both soil available nutrients and soil organic matter were the driving factors affecting the variations of rare bacterial and fungal community structures. Among these soil factors, the soil available potassium was the most important driver of the distribution patterns of both abundant and rare microorganisms.This study reveals the effect of Kapok on distribution characteristics of different soil microbial taxa in the rice field and their driving factors in the Kapok-rice agroforestry system, which might provide theoretical support for the application of the Kapok-rice agroforestry system in agricultural sustainable development.

DING Yiming, DONG Xiaojie, MA Zhize, HUANG Guangyao, REN Mingxun, WANG Wenjuan. Distribution characteristics and influencing factors of abundant and rare microbial communities in Kapok-rice agroforestry systems[J]. Journal of Tropical Biology, 2025, 16(2): 270-280. doi: 10.15886/j.cnki.rdswxb.20240118
Citation: DING Yiming, DONG Xiaojie, MA Zhize, HUANG Guangyao, REN Mingxun, WANG Wenjuan. Distribution characteristics and influencing factors of abundant and rare microbial communities in Kapok-rice agroforestry systems[J]. Journal of Tropical Biology, 2025, 16(2): 270-280. doi: 10.15886/j.cnki.rdswxb.20240118
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