ABSTRACT
This paper intended to create a lexicon, where the sequences of
tokens are representations of the basic vocabulary of Natural
Resources and the Environment. It has the entries that are
considered the most relevant in environmental studies and they
were selected among the most frequently used ones. In order to
create the lexicon, a hash table was implemented, where each item
has two parts: the key and the object. The key is the word itself to
be searched in this lexicon, and the object contains the
information about this word. It was possible to observe that the
creation of this lexicon allows a search for natural resources and
environment concepts with good computational performance.