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In this work, we have attempted to review the current knowledge on the impact of elevated CO 2 , O 3 , and UV on soils. Elevated CO 2  increases labile and stabile soil C pool as well as efficiency of organic pollutants rhizoremediation and phytoextraction of heavy metals. Conversely, both elevated O 3  and UV radiation decrease inputs of assimilates to the rhizosphere being accompanied by inhibitory effects on decomposition processes, rhizoremediation, and heavy metals phytoextraction efficiency. Contrary to elevated CO 2 , O 3 , or UV-B decreases soil microbial biomass, metabolisable C, and soil N  t   content leading to higher C/N of soil organic matter. Elevated UV-B radiation shifts soil microbial community and decreases populations of soil meso- and macrofauna via direct effect rather than by induced changes of litter quality and root exudation as in case of elevated CO 2  or O 3 . CO 2  enrichment or increased UV-B is hypothesised to stimulate or inhibit both plant and microbial competitiveness for soluble soil N, respectively, whereas O 3  favours only microbial competitive efficiency. Understanding the consequences of elevated CO 2 , O 3 , and UV radiation for soils, especially those related to fertility, phytotoxins inputs, elements cycling, plant-microbe interactions, and decontamination of polluted sites, presents a knowledge gap for future research.

Effect of Elevated CO2, O3, and UV Radiation on Soils

Effect of Elevated CO₂, O₃, and UV Radiation on Soils