The main purpose of pricing environmental goods is to enable them to be recognized as integral component of any economic system. The environmental values are not associated with production or consumption, and they are not ...

The depletion of forest in developing countries due to extended pastures, agricultural land, fuel wood and etc. is a serious concern. Therefore planting trees for reforestation and extended forest area is a essential ...

In this paper the main factors that influence the Caspian Sea level rising and the probable and improbable factors are discussed in detail. A cyclical behavior of the level of the Caspian Sea according to local records was ...