Rhizosphere: A fascinating paleovegetational and paleoclimatic new intermediary in the Quaternary fluvio-lacustrine set-up of the Purna alluvial basin, central India

Singh, Ajab; Srivastava, Ashok

doi:10.1016/j.rhisph.2021.100430

Cited by 7 publications

(2 citation statements)

References 30 publications

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“…The former formation is controlled by vegetation type, root architecture, exudation and ecology, and soil properties such as moisture content, temperature and pH values, mineralogy, microbial activity, and also landform (e.g., Sun et al,2021Sun et al, ,2020Keppler et al, 2006). Rhizoliths preserve abundant information about past and present soil (such as sedimentation, diagenesis, and weathering processes) and plant, and can be used as an indicator of environmental and climatic changes (e.g., Singh & Srivastava, 2021;Barta, 2011;Alonso-Zarza et al, 2008;Sun et al,2020Sun et al, ,2021Li et al, 2017;Gocke et al,2014). Rhizoliths represent a link between vegetation colonization and physical and chemical properties of sediments and soils.…”

Section: Introductionmentioning

confidence: 99%

“…Rhizoliths represent a link between vegetation colonization and physical and chemical properties of sediments and soils. Although rhizoliths have been frequently studied, the relationships between root ecology and their formation mechanisms and rates remain still open (e.g., Singh & Srivastava, 2021;Sun et al,2020Sun et al, ,2021Esperante et al, 2021;Bindschedler et al, 2016;Soussi et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Field root ecology and contribution of dominant vegetations in rhizoliths formation in Badain Jaren Desert, China

Sun

Yan²,

Mustoe³

et al. 2023

Preprint

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Background Carbonate rhizoliths are a kind of vegetation root fossils. The rhizoliths occur in Badian Jaran Desert, China. The studies on the relationships between the rhizolith formation and modern vegetation and their roots ecology are rare, and the rhizoliths formation mechanism still remains unclear. Aims The relationships were studied, focusing on roots ecology, local geomorphology and soil under the super arid climate background of the desert. Methods Field preliminary examinations and exploration, digging, and logical comparison methods were used for the three dominant vegetations, Artemisia blepharolepis, Psammochloa villosa and Phragmites australis. Results Woody shrubs of Artemisia blepharolepis have tap and lateral roots; herbaceous grasses of Psammochloa villosa and Phragmites australis have monopodial and linear rhizomes. These roots mainly distribute in moist or wet shallow soil under the dry sand layer of about 10-20 cm depth, which is an open system with active exchanges of water and air of atmosphere. The rhizoliths always were found at Artemisia shrub sites and match the characteristics of Artemisia roots. Conclusion The dead roots of Artemisia released some special biochemicals that triggered carbonate mineralization with the CO2 gas released during root decomposition. Roots structures and depths do not have direct controls for root mineralization. However, local characters of geomorphology and soil had played key roles in rhizolith formation, with the dead roots together. Descriptive studies of ecology of desert vegetation have revealed important questions about rhizoliths mechanisms. Detailed study of the biochemicals, local soil and geomorphology are needed to better understand the origin of rhizoliths.

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