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PAGES Africa
Pan Africa Workshop, July 2004
HUMAN IMPACTS ON TERRESTRIAL AND AQUATIC ECOSYSTEMS
(F-X. Kachuka Nkomerwa)
Human beings always have recourse to forest and marine resources to feed, to cure, to dress themselves and even to achieve certain immaterial cultural actions.
The repeated farming clearnings ,farming technics play a determining role able to result in savannas , steppes and desert on the site of destroyed forest. The degradation of the forest is done by the search of dwelling, urbanisation, by the cut of the firewood , by the industrialisation, by the introduction of new species, by the research of the barks ,the sheets an the roots of trees to manufacture the drugs. Deforestation involves with forester , pedological and hydrological consequences. It results in the watersheds, the dryness, the desert, famine, the death of living beings, including men.
The massive deforestation disturbs the alimentation and the reproduction of the animals, the maintenance of the soil, the precipitations with consequences on the rivers and lakes.
The activities of men creates various threats on the lakes and their biodiversity: sedimentation, pollution, destruction of fishes.
The government should improve living conditions of populations by figthing against poverty.
Each person has to recognize that lasting development is possible if we are ready to saveguard the capital of our natural heritage, because our survival and well-being depend on the reciprocal relationships between mankind and the ecosystems. |
