The phystostabilisation is the technique of treatment of polluted soils using plants to reduce the bioavailability, mobility and leaching of pollutants.
Phytostabilisation is the use of vascular plants to reduce mobility and diffusion of pollutants in soil in the environment: whether in the form of dust, particles or ions leached by water, or transported by wildlife (bioturbation), three modes of transport pollutants are generally the root causes of recontamination of the environment on and around the polluted sites.
Phytostabilisation not primarily aimed pollution, but fixing the pollutant; However, in cases where the pollutant is biodegradable, degradable in time or it quickly loses its radioactivity over time, an effect more or less complete decontamination can be achieved.
Dear Abdul-Kadri Yahaya, I am also agree with the comments of Dr Bachir Achour. It is not only through root, use of plants in further increase of pollutants through plant and keep them at the site is suppose to be Phytostablization.
I strongly agree with the statement in the sense that when heavy metals in the soil are immobilised by the roots of plants they do not spread to other parts of the soil in an attempt to reduce or regulate pollution. This is technically termed as phyto-stabilisation. This is engineered by the roots of plants. Besides phyto-stabilisation, other components of phyto-remediation are phyto-extraction, rhizofiltration, phyto-volatization etc.