The Dynamics of Biological Activity in Technosols Around Crown Perimeters of Woody Plants on Coal Mine Waste Piles

Наталья Александровна Макеева; Неверова Ольга Александровна; Nataliya Makeeva; Olga Neverova

doi:10.17076/eco1516

May 25, 2022Proceedings of the Karelian Research Centre of the Russian Academy of SciencesOpen Access

The Dynamics of Biological Activity in Technosols Around Crown Perimeters of Woody Plants on Coal Mine Waste Piles

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Key Points

To assess seasonal dynamics in soil microorganisms and enzymatic activity within Technosols around the crown perimeters of trees on coal mine waste dumps compared to natural forest soils.
Monitored experimental plots on an unamended rail-transported coal mine waste dump (Technosols) and control plots in a natural forest (Phaeozems/Chernozems) supporting pine and birch stands in Kuzbass, Russia.
Tracked seasonal variations of microorganisms utilizing organic nitrogen, microorganisms utilizing mineral nitrogen, microscopic fungi, and soil enzyme activity (proteases and phosphatases).
Seasonal microbial numbers varied substantially across all sites driven by soil temperature and moisture, with organic and mineral nitrogen-utilizing microbes in Technosols under pine and birch crowns differing significantly from control soils.
Microscopic fungal counts differed significantly between dump Technosols and control soils under pine canopies (p < 0.05).
Technosols under pine exhibited a negative correlation between organic nitrogen utilizers and phosphatase activity (r = -0.48, p < 0.05), whereas control soils showed positive correlations between protease and phosphatase under pine (r = 0.48, p < 0.05) and between fungi and protease under birch (r = 0.54, p < 0.05).

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Implication

Comparative field study reveals altered microbial abundance and enzyme dynamics in Technosols beneath tree canopies, indicating distinct soil recovery pathways on coal mine dumps.

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Макеева et al. (2022) studied this question.

synapsesocial.com/papers/6aa62121e8c87b1c7e3962d8 https://doi.org/10.17076/eco1516

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The Dynamics of Biological Activity in Technosols Around Crown Perimeters of Woody Plants on Coal Mine Waste Piles

Key Points

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The Dynamics of Biological Activity in Technosols Around Crown Perimeters of Woody Plants on Coal Mine Waste Piles

Key Points

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