Although Cameroon is a rather few industrialized country yet, with a relatively low population density (mean about 35 inhabitants/km2, however clearly higher than for neighbouring states excepted Nigeria), the anthropogenic impact on environment is perceptible. This is the case in the country, with agriculture, breeding and forestry, as well as in towns where urbanization is often anarchic, generating serious problems of garbage collecting and waste water reprocessing.

The upper Nyong basin appears nevertheless as a rather well-preserved area. (a) With a 5-10 inh/km2 density (apart from Yaoundé and its suburbs), the demographic pressure is low. (b) This is not a breeding zone, where overgrazing could lead to a regression of the vegetal cover. (c) The studied area is not submitted to an intensive agriculture (big plantations, truck farming), which could be responsible for a systematic clearing and a rapid soil degradation; as no fertilizer and pesticide are used, chemical pollution of this natural system has not to be taken into account. (d) No important sand, gravel or mining resource exploitation is found on the area. (e) The active forestry in the eastern and southern Nyong basin could cause loss of biodiversity or soil erosion only when lots are not correctly replanted.