Considerations on Desertification Phenomenon in Oltenia

Rangeland Desertification in China

Land desertification is one of the most serious environmental and social-economic problems in the North China. The processes of desertification mainly have being controlled by the interaction of human activities and fragile eco-environment, that means the pattern and intension of landuse are major factors for development or reverse of desertification. Because of the increasing pressure of popul...

Stochastic Desertification

The process of desertification is usually modeled as a first order transition, where a change of an external parameter (e.g. precipitation) leads to a catastrophic bifurcation followed by an ecological regime shift. However, vegetation elements like shrubs and trees undergo a stochastic birth-death process with an absorbing state; such a process supports a second order continuous transition wit...

Desertification in Europe

A common misunderstanding is that desertification is linked to the presence of deserts. The truth is that desertification can and does occur far from any climatic desert, as the presence or absence of a nearby desert has no direct relation to desertification. Desertification is the result of human induced land degradation which can be accelerated under severe drought conditions, and can occur u...

Desertification-Climate Change Interactions – Mexico's Battle Against Desertification

A case of visceral leishmaniasis in Oltenia region (Romania).

Visceral leishmaniasis is produced by a protozoan parasite that belongs to the genus Leishmania. Transmission is made through sting, the vector being represented by a species of the genus Phlebotomus. The first case of visceral leishmaniasis in Romania was reported by Manicatide (1912). In 1934, it was described a focus of visceral leishmaniasis in Oltenia region (24 cases).The symptoms of dise...