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Methodology for landscape evaluation...

Parra Torres, Alfonso.

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Methodology for landscape evaluation and environmental rehabilitation of mining areas using aid decision models.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Methodology for landscape evaluation and environmental rehabilitation of mining areas using aid decision models./
Author:	Parra Torres, Alfonso.
Description:	233 p.
Notes:	Source: Dissertation Abstracts International, Volume: 77-03(E), Section: B.
Contained By:	Dissertation Abstracts International77-03B(E).
Subject:	Environmental engineering. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3731851
ISBN:	9781339183732

Methodology for landscape evaluation and environmental rehabilitation of mining areas using aid decision models.
Parra Torres, Alfonso.

Methodology for landscape evaluation and environmental rehabilitation of mining areas using aid decision models. - 233 p.

Source: Dissertation Abstracts International, Volume: 77-03(E), Section: B.

Thesis (Dr.)--Universidad Politecnica de Cartagena (Spain), 2015.

A reclamation and cultural strategy were developed in abandoned tailing ponds. The first objective was to identify species for phytostabilization purposes. Four native plants were identified near the tailing ponds in Avenque stream, Osyris lanceolata, Lavandula dentata, Pistacea lentiscus and Chamaerops humilis and accumulation of trace elements in root, stem or shoot were investigated. In general, O. lanceolata and C. humilis, metal levels were highest in the roots, whereas in L. dentata and P. lentiscus, highest metal levels were in shoots. Therefore, the use of O. lanceolata and C. humilis in phytostabilization can contribute to metal-immobilization and prevent them from becoming available for biota. Besides, a greenhouse experiment was conducted to evaluate the potential use of six species Nerium oleander L., Cistus albidus L., Pistacia lentiscus L., Lavandula dentata L., Rosmarinus officinalis L. and Thymus vulgaris L. for phytostabilization of acidic mine soils. The selected plants were grown in mine tailing soil, unamended (TS) and amended with calcium carbonate and pig manure (ATS), and in reference unpolluted substrate for control (CT); plant growth, root characterization, soil trace elements contents, and their accumulation in plants were measured. Results indicate the application of amendment reduced the soil exchangeable and extractable fraction concentrations of trace elements in ATS compared with TS, mainly for As, Cd and Pb. Although, all the species accumulate metals, levels were below toxicity thresholds. Thus, these species fulfil the criteria to be used for phytostabilization purposes, aided by application of amendments. The second objective was to reduce risks related to heavy metal mobility and increase fertility. Thus, marble waste and pig slurry were applied to the surface of the tailing pond. As a result, pH increased until neutrality, the bioavailable metal fraction significantly reduced, increasing the levels of nutrients and organic matter. The third objective was to give the tailing pond a new recreational and educational use. Besides a guidelines for action, and methodology that can be employed for the regeneration of any area with similar characteristics were established. For this reason a Decision Aid Model was generated which will serve as a benchmark for future mine rehabilitation projects.

ISBN: 9781339183732Subjects--Topical Terms:

548583
Environmental engineering.

Methodology for landscape evaluation and environmental rehabilitation of mining areas using aid decision models.
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245 1 0 $a Methodology for landscape evaluation and environmental rehabilitation of mining areas using aid decision models.
300 $a 233 p.
500 $a Source: Dissertation Abstracts International, Volume: 77-03(E), Section: B.
500 $a Advisers: Angel Faz Cano; Maria Dolores Gomez Lopez.
502 $a Thesis (Dr.)--Universidad Politecnica de Cartagena (Spain), 2015.
520 $a A reclamation and cultural strategy were developed in abandoned tailing ponds. The first objective was to identify species for phytostabilization purposes. Four native plants were identified near the tailing ponds in Avenque stream, Osyris lanceolata, Lavandula dentata, Pistacea lentiscus and Chamaerops humilis and accumulation of trace elements in root, stem or shoot were investigated. In general, O. lanceolata and C. humilis, metal levels were highest in the roots, whereas in L. dentata and P. lentiscus, highest metal levels were in shoots. Therefore, the use of O. lanceolata and C. humilis in phytostabilization can contribute to metal-immobilization and prevent them from becoming available for biota. Besides, a greenhouse experiment was conducted to evaluate the potential use of six species Nerium oleander L., Cistus albidus L., Pistacia lentiscus L., Lavandula dentata L., Rosmarinus officinalis L. and Thymus vulgaris L. for phytostabilization of acidic mine soils. The selected plants were grown in mine tailing soil, unamended (TS) and amended with calcium carbonate and pig manure (ATS), and in reference unpolluted substrate for control (CT); plant growth, root characterization, soil trace elements contents, and their accumulation in plants were measured. Results indicate the application of amendment reduced the soil exchangeable and extractable fraction concentrations of trace elements in ATS compared with TS, mainly for As, Cd and Pb. Although, all the species accumulate metals, levels were below toxicity thresholds. Thus, these species fulfil the criteria to be used for phytostabilization purposes, aided by application of amendments. The second objective was to reduce risks related to heavy metal mobility and increase fertility. Thus, marble waste and pig slurry were applied to the surface of the tailing pond. As a result, pH increased until neutrality, the bioavailable metal fraction significantly reduced, increasing the levels of nutrients and organic matter. The third objective was to give the tailing pond a new recreational and educational use. Besides a guidelines for action, and methodology that can be employed for the regeneration of any area with similar characteristics were established. For this reason a Decision Aid Model was generated which will serve as a benchmark for future mine rehabilitation projects.
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