Element Accumulation Patterns of Native Plant Species under the Natural Geochemical Stress
| Autor: | Alexander V. Puzanov, Aleksey V. Nastavkin, M. A. Pashkevich, Jaume Bech, Natalya V. Shvydkaya, Vladimir A. Alekseenko, Maria M. Machevariani, Núria Roca, Alexey V. Alekseenko |
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| Rok vydání: | 2020 |
| Předmět: |
Biogeochemical cycle
Supergene (geology) Geochemistry trace elements Plant Science phytoremediation 010501 environmental sciences 010502 geochemistry & geophysics 01 natural sciences Article Absorció Absorption hyperaccumulation vegetation stress lcsh:Botany metal uptake Prospecting Ecology Evolution Behavior and Systematics metal anomalies 0105 earth and related environmental sciences geography Trace elements geography.geographical_feature_category Ecology Oligoelements Bedrock Schist Native plant lcsh:QK1-989 Phytoremediation Soil water Geology |
| Zdroj: | Dipòsit Digital de la UB Universidad de Barcelona Plants Volume 10 Issue 1 Plants, Vol 10, Iss 33, p 33 (2021) |
| Popis: | A biogeochemical study of more than 20,000 soil and plant samples from the North Caucasus, Dzungarian Alatau, Kazakh Uplands, and Karatau Mountains revealed features of the chemical element uptake by the local flora. Adaptation of ore prospecting techniques alongside environmental approaches allowed the detection of geochemical changes in ecosystems, and the lessons learned can be embraced for soil phytoremediation. The data on the influence of phytogeochemical stress on the accumulation of more than 20 chemical elements by plants are considered in geochemical provinces, secondary fields of deposits, halos surrounding ore and nonmetallic deposits, zones of regional faults and schist formation, and over lithological contact lines of chemically contrasting rocks overlain by 5&ndash 20 m thick soils and unconsolidated cover. We have corroborated the postulate that the element accumulation patterns of native plants under the natural geochemical stress depend not only on the element content in soils and the characteristics of a particular species but also on the values of ionic radii and valences with an increase in the energy coefficients of a chemical element, its plant accumulation decreases sharply. The contribution of internal factors to element uptake from solutions gives the way to soil phytoremediation over vast contaminated areas. The use of hyperaccumulating species for mining site soil treatment depends on several external factors that can strengthen or weaken the stressful situation, viz., the amount of bedrock exposure and thickness of unconsolidated rocks over ores, the chemical composition of ores and primary halos in ore-containing strata, the landscape and geochemical features of sites, and chemical element migration patterns in the supergene zone. |
| Databáze: | OpenAIRE |
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