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| Titel |
Behaviour of Cistus populifolius, Cistus salviifolius and their hybrid in polymetallic contaminated mine areas |
| VerfasserIn |
Maria Manuela Abreu, Erika Santos, Eliana Fernades, Maria Clara Magalhães |
| Konferenz |
EGU General Assembly 2011
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 13 (2011) |
| Datensatznummer |
250054870
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| Zusammenfassung |
| Plants belonging to the Cistus genus show a great plasticity and are able to grow both in contaminated and non-contaminated soils. Cistus salviifolius L. is well adapted to areas with several degrees of air and soil humidity, but Cistus populifolius L. is only found in regions or small areas with high humidity. C. salviifolius was identified in several mine areas of the Portuguese Iberian Pyrite Belt (PIPB) while C. populifolius was, for the first time, identified in 2009 in Chança and Caveira mines. In these mine areas was also identified a hybrid of both species Cistus x hybridus Pourr.
The aim of this study was to compare the biogeochemical behaviour of the three Cistus species growing in the polymetallic mine areas of Caveira, Chança and São Domingos (PIPB). Nineteen composite soil samples (homogenate of three trial points with 20 cm depth) were collected from rizosphere area of the studied plant species, in the three mine areas. In each sampling soil site were also collected composite plant samples (roots and aerial parts - leaves and twigs): seven C. populifolius; five C. x hybridus; fifteen C. salviifolius.
The mine soils were developed on waste materials of different characteristics: gossan materials, modern slags, and mixtures, in different proportions of pyrites ashes mixed with slags and host rocks. The soils are thin and presented small fertility with variable values of Pextractable 60%), being Cu an exception for C. salviifolius in São Domingos where TC lies between 21 and 59%. |
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