Abstract: The field studies were conducted to probe the regularity of translation and accumulation of heavy metals in soil_rice system. The results showed that on combined pollution soil, critical contents of heavy metal elements decreased, and the contents of heavy metals absorbed by rice <2%, with 98% remain in soil. The distribution of heavy metals in rice was rootstem and leaf>grain.

Key words: cold temperate zone, wetland, fire, vegetation restoration, affecting factor.