Influence des sols contaminés en cuivre sur le développement de deux variétés (locale et améliorée) de légumes dans la région de Lubumbashi (RD. Congo).

Mubemba, M M; Mununga, Katebe Félicien; Kaumbu, Kyalamakasa Jean-Marc; Mwilambwe, Kapoma Xavier; Maloba, Kazembe Jean-Pierre; Banza, Ilunga Meschack; Mukunto, Kimonge Ismael

doi:10.4314/jab.v115i1.1

Cited by 3 publications

(1 citation statement)

References 3 publications

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“…Preliminary investigations consisted of a literature search on environmental issues within the Katangese Copperbelt between the years 2000 and 2022 [14,[51][52][53]. This literature review was conducted through search engines (Scopus, ResearchGate, google scholar, DOAJ) using keywords (Katangese Copperbelt, Lubumbashi, miombo woodland, environmental problems, deforestation, trace metal elements, pollution) and Boolean operators [54].…”

Section: Data Collectionmentioning

confidence: 99%

Towards an Inclusive Approach to Forest Management: Highlight of the Perception and Participation of Local Communities in the Management of miombo Woodlands around Lubumbashi (Haut-Katanga, D.R. Congo)

Nghonda

Muteya

Kashiki

et al. 2023

Forests

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The misappropriation of sustainable forest programs by local communities and the under-utilization of their knowledge are major impediments to the mitigation of deforestation. Within this context, participation has become a principle used in almost all interventions. It is important to evaluate the practices in this area to ensure better involvement of local communities. This survey examined the perception and participation of local communities in the management of miombo woodlands, based on semi-structured questionnaire surveys involving 945 households in 5 villages in the Lubumbashi rural area. The results reveal that local communities perceive soil fertility loss and deforestation as major environmental challenges in their area. This perception remains largely influenced by their socio-demographic factors such as respondents’ age, seniority in the villages, and level of education. To mitigate deforestation, the rare actions of provincial public services and non-governmental organizations are focused on the sustainable exploitation of miombo woodlands through the development of simple management plans, reforestation, and forest control. These activities are sparse and poorly inclusive of scientific findings and the priorities of local communities. These justify poor community participation, particularly in the actions of provincial public services. For a better appropriation of sustainable forest management plans and to reinforce miombo woodlands’ resilience to anthropogenic pressures, based on these findings, we recommend a concerted and inclusive approach to forest planning.

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Section: Data Collectionmentioning

confidence: 99%

Towards an Inclusive Approach to Forest Management: Highlight of the Perception and Participation of Local Communities in the Management of miombo Woodlands around Lubumbashi (Haut-Katanga, D.R. Congo)

Nghonda

Muteya

Kashiki

et al. 2023

Forests

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Assessment of Heavy Metal Pollution of Agricultural Soil, Irrigation Water, and Vegetables in and Nearby the Cupriferous City of Lubumbashi, (Democratic Republic of the Congo)

et al. 2023

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Lubumbashi (DR Congo)—the capital of copper mining—has been considered as one of the richest mining regions of the world for more than a decade. These riches have brought along multiple mining companies responsible for soil, river water and vegetable pollution, as in many African cities. The aim of the present study was to quantify and evaluate the pollution levels and the potential sources of soil, irrigation water and vegetable contamination by the metals As, Cd, Cr, Cu, Pb, Co and Zn in the urban gardens of Lubumbashi (DR Congo). The contamination, pollution and enrichment levels of the gardens were determined based on different indices in order to rank the soils. The results show that soils, waters and vegetables present contamination levels that represent a serious concern for human health. All soils presented contamination indices ranging from low (72% of the soils) to very high (3.4% of the soils) metal (copper, lead, zinc) contamination. The Cu and Cd contents varied between 1355 mg/kg et 236 mg/kg, much higher than the World Health Organisation (WHO) thresholds (100 mg/kg for Cu and 2 mg/kg for Cd). Moreover, the water used for crop and garden irrigation presented high Pb (57% of the waters), Fe (52%), Cu (19%) and Cd (10%) contamination levels, above the Association Française de Normalisation (AFNOR) U4441 toxicity thresholds (2 mg/kg for Cu; 0.1 mg/kg for Fe and 0.01 mg/kg for Pb) for crop irrigation. Finally, the vegetables produced in these gardens and sold in the local markets had very high metal content (47% contained Cu; 100% contained copper and cobalt) above the WHO standard (10 mg/kg for Cu, 2 mg/kg for Cd and 1 mg/kg for Co) for human consumption. In the face of these issues, it would be preferable to consider cheaper, more sustainable techniques that reduce soil-to-plant metal transfer.

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Heavy Metal Content and Physico-Chemical Analyses of Soils under the Litter of some Medicinal Taxa in the Luki Biosphere Reserve, Democratic Republic of the Congo

Mukeba¹,

Ngondo²,

Kadima³

et al. 2021

AJEE

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Aim: The aim of this study was to compare the texture, mineral element and heavy metal content of the soil under the litter of different selected species in relation to the plan of their pedogenesis. Methods: The granulometric analysis of the various samples based on laser diffraction, measurements of Total Nitrogen and Total Organic Carbon were performed using the Elemental Analyzer, the Organic Matter content is estimated by the loss of ignition method using a Salvis furnace, In order to estimate the CaCO3 content. The same samples were heated in the oven at 1000°C for 60 minutes and reweighed. The carbonate content is estimated by the loss in mass during this second firing, multiplied by 2.274 which is the molecular weight ratio between CaCO3 and CO2. The heavy metal and mineral composition was evaluated by ICP-AES and AAS. Results: The granulometric analyses show a sandy texture, according to the FAO classification. The organic matter content thus observed in the soils under the litter of these four species did not show any significant difference. The concentration of major mineral elements recorded in soils under the litter of Blighia welwitchii, Oncoba welwitschii, Zanthoxylum gilletii and Harungana madagascariensis did not show any significant difference. However, potassium, phosphorus, and magnesium have a high concentration compared to calcium and sodium. This study showed that the levels of cadmium, lead, arsenic and aluminum in the various samples of litter soils of all plant species including nickel for B. welwitschii are above the standards set by the Canadian Council of Ministers of the Environment for soil quality. Pollution factors for aluminum are the highest. This indicates that aluminum is the most polluting metal. The low pollution factors for lead and nickel are due to the low fixation of these metals by soils. Conclusions: Our study took place in the Luki Biosphere reserve and showed that the different soils under litter are polluted by very toxic and persistent heavy metals such as cadmium, lead, aluminum, arsenic and nickel. This study has revealed new aspects of heavy metal pollution. This pollution represents a serious threat to the environment in general and to humans in particular through the food chain.

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Influence des sols contaminés en cuivre sur le développement de deux variétés (locale et améliorée) de légumes dans la région de Lubumbashi (RD. Congo).

Cited by 3 publications

References 3 publications

Towards an Inclusive Approach to Forest Management: Highlight of the Perception and Participation of Local Communities in the Management of miombo Woodlands around Lubumbashi (Haut-Katanga, D.R. Congo)

Towards an Inclusive Approach to Forest Management: Highlight of the Perception and Participation of Local Communities in the Management of miombo Woodlands around Lubumbashi (Haut-Katanga, D.R. Congo)

Assessment of Heavy Metal Pollution of Agricultural Soil, Irrigation Water, and Vegetables in and Nearby the Cupriferous City of Lubumbashi, (Democratic Republic of the Congo)

Heavy Metal Content and Physico-Chemical Analyses of Soils under the Litter of some Medicinal Taxa in the Luki Biosphere Reserve, Democratic Republic of the Congo

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