Apart from the possible
growth-bioindication of
tree-induced decontamination effects on soils, phytoremediation success
control may be performed indirectly, using controlled and quantifiable pollutant
(TNT) entry
in phytoremediation test systems.
For this reason we conducted the above-mentioned short term experiments (approx. one
month) with repeated or continuous application of nitroaromatic contaminants, which allowed
combinations of the time
course of dendrotoxicity with endpoint measurements of the fate of
applied pollutants.
In situ, a lateral TNT
influx from polluted leachate into encapsulated, tree planted unpolluted areas,
controlled by
"passive samplers" could be used, with simultaneous phytotoxicity
growth control as an application variant for dendroremediation.
Combined with soil analytics, it could contribute to the predictability of
plant sanitation effects.
For reasons of the high transpiration potential, the longevity, and the
moderate nutrient requirements, it offers itself to plant trees or to use already tree-covered
areas to quantify their dendroremediation potential and to assess their
influence on the processes of natural attenuation.
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