Gas-Hydrothermal Turbation of Soils as a Factor of Microhighs Forming

Хитров, Н. Б.; Ubugunov, V. L.; Убугунова, В. И.; Rupyshev, Yu. A.; Аюшина, Туяна Аюшеевна; Zhambalova, A. D.; Цыремпилов, Э. Г.; Парамонова, А. Е.; Насатуева, Ц. Н.

doi:10.1134/s1064229320020064

Cited by 2 publications

(1 citation statement)

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“…Closer to the hottest area of the thermal field with moderately heated and hot soils, vegetation forms small mosaics of specific geothermal communities. As the size of such geothermal plant communities in most cases is extremely small (less than 1 m 2 ), they are named “microzonal thermophilic complexes” 20 , 21 .…”

Section: Methodsmentioning

confidence: 99%

The variability of soils and vegetation of hydrothermal fields in the Valley of Geysers at Kamchatka Peninsula

Semenkov

Klink

Лебедева

et al. 2021

Sci Rep

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The picturesque and high conservation value thermal landscapes of the Valley of Geysers feature endothermal (heated by endogenous fluids) soils which support endangered and unique species. However, such soils have not been distinguished as a separate taxon within most classification systems. In this study, we described the soil morphology at macro-, meso- and micro-scales, chemistry, mineralogy and vegetation of these landscapes as they are affected by the steam-heated acid-sulfate waters. The studied catenary sequence from exothermal (non-heated) to endothermal soils was characterized by decreasing contents of soil organic carbon, sand fraction, essential nutrients (Ca, K, Mg, Mn and Si), increasing soil acidity, amounts of fine particle-size fractions and contents of trace elements (Al, As, Co, Cr, Cu, Fe, Pb, Ti and V) as well as the development of sodium-sulfate salinity, kaolinization and ferrugination. In phytocenoses supported by endothermal soils, species of order Rosales and Asparagales were overrepresented among obligate and facultative thermophytes respectively, and species of order Poales were underrepresented among facultative thermophytes in relation to the flora of the Valley of Geysers. Phytocenoses on the non-heated Andosols were enriched in Polypodiopsida species. The results of our comparative analysis of the thermally-induced variability in the soils and vegetation contribute to the general understanding of mineralogical, bio-abiotic and biological systems affected by steam-heated acid-sulfate waters. We hope that our findings will provide a basis for future transdisciplinary studies of the influence of steam-heated waters of a hot spring on the thermal landscapes.

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Section: Methodsmentioning

confidence: 99%