期刊
ENVIRONMENTAL POLLUTION
卷 176, 期 -, 页码 134-143出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2013.01.023
关键词
Phytostabilisation; Metals; Semiarid climate; Revegetation; Plant facilitation
资金
- Ministerio de Economia y Competitividad of Spain
- FEDER [CTM2011-23958]
- Fundacion Seneca de la Comunidad Autonoma de la Region de Murcia [15296/PI/10]
- Spanish Ministerio de Economia y Competitividad
- UPCT [RYC-2010-05665]
Phytomanagement in terms of phytostabilisation is considered a suitable method to decrease environmental risks of metal(loid) enriched mine tailings. The goal of this study was to identify plant-favourable edaphic niches in mine tailings from a semiarid area, in order to obtain relevant information for further phytostabilisation procedures. For this purpose, a transect-designed sampling from non-disturbed soils to two mine tailings was performed, including the description of soil and plant ecology gradients. Plant ecological indicators showed several stages in plant succession: from weeds to stable patches of late successional plant species. PCA results revealed that plant distribution at the tailings was driven mainly by salinity while metal(loid) concentrations played a minor role. The presence of soil desiccation cracks generated low salinity patches which facilitated favourable niches for plant establishment. Edaphic-patch distribution may condition phytostabilisation since ploughing or the employment of certain amendments should take into account favourable niches for plant growth. (C) 2013 Elsevier Ltd. All rights reserved.
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