Effects of 15-Year-Old Plantation on Soil Conditions, Spontaneous Vegetation, and the Trace Metal Content in Wood Products at Kipushi Tailings Dam

被引：4

作者：

Mwanasomwe, Jacques Kilela ^{[1
,2
]}

Langunu, Serge ^{[1
,2
]}

Shutcha, Mylor Ngoy ^{[1
,3
]}

Colinet, Gilles ^{[2
]}

机构：

[1] Univ Lubumbashi, Fac Agron Sci, Ecol Ecol Restorat & Landscape, Campus Univ, Lubumbashi, DEM REP CONGO

[2] Univ Liege, BIOSE Biosyst Engn Dept, Water Soil Plant Unit, Gembloux Agrobio Tech, Gembloux, Belgium

[3] Univ Libre Bruxelles, Plant Ecol & Biogeochem, Campus Plaine, Brussels, Belgium

来源：

FRONTIERS IN SOIL SCIENCE | 2022年 / 2卷

关键词：

tree species; trace metals; reclaimed area; spontaneous vegetation; charcoal; CONTAMINATED SOIL; HEAVY-METALS; ABANDONED MINE; PHYTOREMEDIATION; KATANGA; PLANTS; POLLUTION; PHYTOSTABILISATION; COMMUNITIES; AMENDMENTS;

D O I：

10.3389/fsoil.2022.934491

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

Phytostabilization is a more appropriate way for rehabilitation of metal-polluted environments in the Copperbelt region. A 1.5-hectare tree planting trial had been installed on the tailings dam (TD) with the help of organic matter (OM) mixed to topsoil. Then, 15 years later, this study aimed to evaluate the performance of the tree plantation, in regard to soils and spontaneous vegetation. The Cu and Co concentration was higher in the reclaimed soil compared with the unreclaimed. Acacia auriculiformis, Acacia polyacantha, Albizia lebbeck, Pinus sylvestris, Psidium guajava, Senna siamea, Senna spectabilis, and Syzygium guineense responded well to the criteria of phytostabilization, whereas Leucaena leucocephala was very invasive. Metal concentration was manifold higher in charcoals than in woods (Zn: 3.8-39.8 mg kg-1 in wood versus 272-523 mg kg-1 in charcoal) with no differences between charcoals regardless of the origin. The tree implantation aided with amendments can meet the criteria of phytostabilization through good survival and regeneration in the heavily contaminated TD.

引用

页数：12