ABSTRACT
A principal concern of environmental economics is the analysis of human interactions with environmental goods and services such as landscape, recreational amenity, clean air and water. Each of these is an example of a positive externality, that is an unintentional by-product of traditional land uses in the countryside which itself provides benefits to certain individuals (there may also be less desirable side-effects of traditional land uses like agriculture, in the form of negative externalities such as pollution).
