posted on Jan, 8 2014 @ 04:22 PM
reply to post by ketsuko
Did you even read the links that I provided? Doing this one time is fine but twice, especially when I provided plenty of reference material that
identifies what desertification is and what induces it, is getting kind of ridiculous, ketsuko.
From the links that I provided:
The carrying capacity of a biological species in an environment is the maximum population size of the species that the environment can sustain
indefinitely, given the food, habitat, water and other necessities available in the environment. In population biology, carrying capacity is defined
as the environment's maximal load, which is different from the concept of population equilibrium.
Causes of desertification:
Overgrazing is the major cause of desertification worldwide.
Cultivation of marginal lands, i.e lands on which there is a high risk of crop failure and a very low economic return, for example, some parts of
South Africa where maize is grown.
Both the push to increasing herd sizes and to cultivate lands that cannot sustain it are the direct result of increased population
isn't rocket science (technically, it's the integration of physical and cultural geography). The more people you have, the more mouths that are
going to need to be fed. In the case of Africa, it actually has a fairly low carrying capacity due to water and availability of food. Because the
continent of Africa is what it is, the carrying capacity per acre for the land is actually much smaller than other parts of the world. Once we start
pushing past that carrying capacity through increased population and increased cultivation, it generates soil depletion, soil erosion and eventually,
That is not to say that there are not any other factors involved. There are and some of them are really grim. Africa has been confronted with severe
and repeated droughts, which induced a good deal of starvation and/or malnutrition. Nutritional diseases such as kwashiorkor and pellagra, both of
which affect cognitive function and development, which, in turn, can affect the individual's productivity and may actually cause parents to have more
children. It has some contributing factor towards this kind of cycle that exists in some parts of Africa (not in all--some countries there are fine
and don't have these issues. For example, you're not going to find cases of kwashiorkor in the Masai but you're going to find it in Ethiopia).
These things actually increase the susceptibility to infections such as HIV. These things also combine to increase poverty levels and inequity.
Africa is super complex and we've pulled a lot of dumb dumb moves historically.
One of my cultural geography professors shocked us a long time ago with the statement that we should all stop supplying aid to Africa and said that
Sally Struthers did an inordinate amount of damage to the development, population, overall health and more to the continent. That was really shocking
at the time but today, it's even coming from Africans themselves stating that the continent must correct through the establishment of economic
development that counters the crises that erupt during phases where that carrying capacity is tipped:
Here's an interesting article from NIH on the subject that I'm guessing you won't read either: www.ncbi.nlm.nih.gov...