Abstract
The abandoned Pb/Zn mine causes heavy metal problems in the surrounding area at Gyongyosoroszi (North-Hungary). The Toka-river transported heavy metal (Cd, Cu, Pb, Zn) ions from several heaps deposited imprudently near a historic lead and zinc-mining site. Willow (Salix sp.) is one of the plants often applied for phytoremediation practice, since its high metal accumulation capacity. Proposal of this work was to investigate the change of root and rhizosphere characters of willow plants induced by high heavy metal pollution. The response of root mass/soil samples, fine root mass/other roots and BAF-s (bioaccumulation factors) and also two soil biological properties soil microbial biomass and acid phosphatase activity to heavy metal pollution were studied. All measured biological parameters have proved to indicate soil pollution, root mass decreased, portion of fine root increased, BAF-s values with exception of Cd decreased significantly. Both measured biological parameters of willow rhizosphere therefore could indicate soil pollution, but change was adverse, biomass decreased while phosphatase activity increased. Microbial biomass and phosphatase activity were not correlated, indicating different account of ecological factors that altering biological properties of a soil.
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Claims 6
Claim · model-written summary
High heavy metal pollution decreased root mass of willow.
SalixNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“root mass decreased”
t0“willow (Salix sp)”
t1“high heavy metal pollution”
Claim · model-written summary
High heavy metal pollution increased the portion of fine root in willow.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“portion of fine root increased”
t0“willow (Salix sp)”
t1“high heavy metal pollution”
Claim · model-written summary
Bioaccumulation factors in willow decreased significantly under heavy metal pollution, with the exception of Cd.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“BAF-s values with exception of Cd decreased significantly”
t0“willow (Salix sp)”
t1“high heavy metal pollution”
Claim · model-written summary
Soil microbial biomass in the willow rhizosphere decreased under heavy metal pollution.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both measured biological parameters of willow rhizosphere therefore could indicate soil pollution, but change was adverse, biomass decreased while phosphatase activity increased”
t0“willow (Salix sp)”
t1“high heavy metal pollution”
Claim · model-written summary
Acid phosphatase activity in the willow rhizosphere increased under heavy metal pollution.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both measured biological parameters of willow rhizosphere therefore could indicate soil pollution, but change was adverse, biomass decreased while phosphatase activity increased”
t0“willow (Salix sp)”
t1“high heavy metal pollution”
Claim · model-written summary
Soil microbial biomass and phosphatase activity were not correlated in the willow rhizosphere.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Microbial biomass and phosphatase activity were not correlated”
t0“willow (Salix sp)”
The same questions in other papers
heavy metal · growth · Salix (willows)Results agree
2 papers in the same direction as this paper
- negative
- negative
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.