Nutrient supply modulates species interactions belowground: dynamics and traits of fine roots in mixed plantations of Eucalyptus and Acacia mangium

Bordron, Bruno; Germon, Amandine; Laclau, Jean‐Paul; Oliveira, I.R.; Robin, Agnès; Jourdan, Christophe; Paula, Ranieri Ribeiro; Pinheiro, Rafael Costa; Guillemot, Joannès; Gonçalves, José Leonardo de Moraes; Bouillet, Jean‐Pierre

doi:10.1007/s11104-020-04755-2

Cited by 6 publications

(1 citation statement)

References 100 publications

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“…However, the trend changed by N application, as N fertilized D. odorifera under the DS model gained greater positive effects than that under the DR model, and D. odorifera under the DR model suffered stronger inhibitory effects (e.g., the value of RCI dropped from positive to negative) under the 100% FC + N condition (Figure 5; Table 2). A related study reported that nutrient supply could increase the competition intensity between Eucalyptus and Acacia mangium (Bordron et al, 2021). No positive interaction of N-fixing Alnus rubra on the growth of Pseudotsuga menziesii could be converted to a strong facilitating effect by high soil N availability (Binkley et al, 2003).…”

Section: Responses Of D Odorifera To Different Niche Neighbors Were Modified By Drought and N Application Under The Root Interaction Modementioning

confidence: 97%

Drought and Nitrogen Application Modulate the Morphological and Physiological Responses of Dalbergia odorifera to Different Niche Neighbors

2021

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Mixed stands can be more productive if growth facilitation via niche segregation occurs. Dalbergia odorifera T. Chen, a tropical tree species endemic to Hainan Island with great economic values, belongs to the family Leguminosae. However, selecting mixed species with suitable ecological niches to efficiently construct mixed forests of D. odorifera in the context of abiotic stress [drought, nitrogen (N) deposition] remained obscure. In the present study, the target plant D. odorifera was planted with the same species D. odorifera, heterogeneous but the same family Delonix regia and non-Leguminous Family Swietenia mahagoni in the root interaction and isolated models under two watering regimes [100% and 30% field capacity (FC)] and two N applications (application, non-application), respectively. Principle component analysis based on the performances of growth, phenotype, and physiology was performed to identify the main factors affected by the treatments and the most discriminatory effects of water, N level, and species interaction models. Both comprehensive evaluation values and comprehensive index values were calculated to evaluate the influences of different niche neighbors on D. odorifera. Results showed that D. odorifera was benefited from S. mahagoni but inhibited from D. odorifera in all treatments under root system interaction. Drought stress aggravated the inhibitory effects on D. odorifera from D. odorifera. N application stimulated the promoted effects on D. odorifera from S. mahagoni but enhanced competition intensity of D. odorifera from D. regia under the 100% FC condition. N application alleviated the inhibitory effect of drought stress on D. odorifera from D. odorifera and S. mahagoni. Furthermore, the responses of D. odorifera to different niche neighbors were dominated by belowground interaction rather than the negligible aboveground one. Therefore, the feasibility of niche segregation as the criterion for selecting neighbors to construct D. odorifera mixed stands was confirmed. In addition, water level and N application could alter responses of D. odorifera to different niche neighbors under the root system interaction. Appropriate N application could alleviate the inhibitory effect of drought stress on D. odorifera in its mixed forests. A mixture with S. mahagoni under appropriate N application could be the optimal planting model.

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Section: Responses Of D Odorifera To Different Niche Neighbors Were Modified By Drought and N Application Under The Root Interaction Modementioning

confidence: 97%

Drought and Nitrogen Application Modulate the Morphological and Physiological Responses of Dalbergia odorifera to Different Niche Neighbors

2021

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Spatial distribution of fine root traits in relation to soil properties and aggregate stability of intensively managed Moso bamboo (Phyllostachys edulis) plantations in subtropical China

Ni,

2024

Plant Soil

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Tree species identity drives the vertical distribution of soil carbon and nutrient concentrations in the Loess Plateau, China

Ma,

Bai,

Chen

et al. 2024

Plant Soil

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Nutrient supply modulates species interactions belowground: dynamics and traits of fine roots in mixed plantations of Eucalyptus and Acacia mangium

Cited by 6 publications

References 100 publications

Drought and Nitrogen Application Modulate the Morphological and Physiological Responses of Dalbergia odorifera to Different Niche Neighbors

Drought and Nitrogen Application Modulate the Morphological and Physiological Responses of Dalbergia odorifera to Different Niche Neighbors

Spatial distribution of fine root traits in relation to soil properties and aggregate stability of intensively managed Moso bamboo (Phyllostachys edulis) plantations in subtropical China

Tree species identity drives the vertical distribution of soil carbon and nutrient concentrations in the Loess Plateau, China

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