1) Spanish Case Study - reduction in contamination through amendment additions and afforestation

The researchers are testing and monitoring the efectiveness and duration of amendments to reduce contamination in the Guadiamar corridor.  They are also monitoring the effects of trees on soil contamination and carbon sequestration.

Amendments
Reduction of contamination by amendment addition

 

Afforestation
Afforestation of contaminated land

 Preliminary Results

(A) Amendment addition

 Change of soil property: Increase of pH
 SpainResults9

 SpainResults4

Temporal changes in soil pH and CaCl2‐extractable
Cd, in the 0–15 cm (2003 – 2016).

 

 Effect on soil threat: decrease of bioavailability
                                      of trace elements
Control = non‐amended control;
SL2 = sugar beet lime applications in 2002 and
2003;
SL4 = SL applications in 2002, 2003, 2005 and
2006;
BC2 = biosolid compost applications in 2002 and
2003;
BC4 = BC applications in 2002, 2003, 2005 and
2006.

SpainResults3

 

(B) Tree plantation

 Change of soil property: increase of organic matter
Forest floor mass

SpainResults5   SpainResults6

Differences between seven tree species in
accumulation of forest floor mass and soil
carbon underneath.

 

 

 SpainResults7
 Effect on soil threat: decrease of bioavailability
                                  of trace elements
Differences between seven tree species
in phytostabilization of soil trace
elements.
                        Soil Cadmium density

SpainResults8

 

Scientific articles

M.T. Domínguez,J.M. Alegre, P. Madejón, E. Madejón, P. Burgos, F. Cabrera, T. Marañón, J.M. Murillo (2016) River banks and channels as hotspots of soil pollution after large-scale remediation of a river basin  Geoderma Vol 261, 1 January 2016, Pages 133–140 DOI:10.1016/j.geoderma.2015.07.008

María T. Domínguez, , Ignacio M. Pérez-Ramos, José M. Murillo, Teodoro Marañón Facilitating the afforestation of Mediterranean polluted soils by nurse shrubs.   Journal of Environmental Management Vol Volume 161, 15 September 2015, Pages 276–286 doi:10.1016/j.jenvman.2015.07.009

María Anaya-Romero,Sameh Kotb Abd-Elmabod, Miriam Muñoz-Rojas, Gianni Castellano, Carlos Juan Ceacero, Susana Alvarez, Miguel Méndez, Diego De la Rosa (2015) Evaluating Soil Threats Under Climate Change Scenarios in the Andalusia Region, Southern Spain. Published in: Land Degradation & Development Volume 26, Issue 5 July 2015 Pages 441–449 http://onlinelibrary.wiley.com/doi/10.1002/ldr.2363/full

For more details about this experiment, please contact Teodoro Marañón This email address is being protected from spambots. You need JavaScript enabled to view it.

 

2) Romanian Case Study - immobilization of heavy metals using soil amendements

The researchers are testing the effectiveness of different soil amendements to reduce the heavy metals mobility in soil and the uptake by plants.

 DSCF1048 1
 Factory site, Copsca Mica

 

Preliminary Results

a) Treatments effectiveness in terms of targeted variables /principal threat

             RomaniaResults1      
Overview of significant effects of treatments on metal
bioavailability in soil and metal accumulation in biomass
grown on treated soils

RomaniaResults2RomaniaResults3

RomaniaResults4

* Values followed by the same letter (a, b, c) are not
   significantly different at the 5% level according to the
   Tukey's honestly significant differences (HSD) test.

RomaniaResults5

 b) Treatments impacts on non-targeted variables / additional soil threats

RomaniaResults6        Overview of significant effects of treatments on soil fertility and soil microbial activity in treated soils

RomaniaResults7

* Values followed by the same letter (a, b, ...)
   are not significantly different at the 5%
   level according to the Tukey's honestly
   significant differences (HSD) test.

      RomaniaResults8

For more information about this RECARE experiment, please contact Mihail Dumitru This email address is being protected from spambots. You need JavaScript enabled to view it.