التفاصيل البيبلوغرافية
| العنوان: |
Cover layers to the growth of trees and shrobs over a sulfide spoil from gold mining |
| المؤلفون: |
Assis, Igor Rodrigues de, Dias, Luiz Eduardo, Abrahão, Walter Antônio Pereira, Ribeiro Jr, Emerson Silva, Mello, Jaime Wilson Vargas de |
| المصدر: |
Revista Árvore. August 2011 35(4) |
| بيانات النشر: |
Sociedade de Investigações Florestais, 2011. |
| سنة النشر: |
2011 |
| مصطلحات موضوعية: |
Sulfide substrate, Reforestation, Land reclamation |
| الوصف: |
This work was done at a gold mine company in Paracatu, MG, Brazil, and was conducted from March 2000 to November 2005. The substrate (spoil) studied was a phillite rock which contains sulfides such as pyrite and arsenopyrite. This study aimed to evaluate the survival and growth of plant species on different combinations of substrate layers over the spoil. These layers were a cover layer and a sealing layer, both deposited over the spoil. The treatment 1 had saprolite (B1) in the sealing layer (SL) and B1 with liming (B1L) in the cover layer (CL). The treatment 2 had B1 in SL and B1L + soil with liming (SoL) in the CL. The treatment 3 had B1 + SoL in the SL and B1L in the CL. The treatment 4 had B1 + SoL in the SL and B1L + SoL in the CL. The plant species used were Acacia farnesiana, A. holosericea, A. polyphylla, Albizia lebbeck, Clitoria fairchildiana, Flemingia sp., Mimosa artemisiana, M. bimucronata e Enterolobium contortisiliquum. Forty and 57 months after planting, collardiameter, height, and living plants were evaluated. The greatest survival rate was oobservedintreatmentwith B horizon of an Oxisoil in both layers, with 80 %. In general, M. bimucronata and A. farnesiana species showed the highest survival rate. The arsenic-content by Mehlich 3 in the cover layer ranged from 0.00 to 14.69 mg dm- 3 among treatments. The experimental results suggest that layers combinations above the sulfide substrate allow the rapid revegetation of the spoil. |
| نوع الوثيقة: |
article |
| وصف الملف: |
text/html |
| اللغة: |
English |
| تدمد: |
0100-6762 |
| DOI: |
10.1590/S0100-67622011000500019 |
| URL الوصول: |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-67622011000500019 |
| Rights: |
info:eu-repo/semantics/openAccess |
| رقم الانضمام: |
edssci.S0100.67622011000500019 |
| قاعدة البيانات: |
SciELO |