A succession for determination of ecologic area diversity index for forest ecosystem diversity mapping.

Biodiversity (species diversity, structural diversity and functional diversity) and genetic diversity (taxonomic diversity and/or taxonomic differentiation) have to be calculated in order to define ecosystem diversity. Species diversity is calculated at the level of alpha, beta and gamma. Dealing with calculation of structural diversity, size differentiation, contagion, species mingling give valuable information. Functional attribute diversity is the sum of the pairwaise functional dissimilarities of species. Taxonomic diversity based on systematic species classification can be recognized as genetic diversity. This article was written to give information about some important indices including species diversity, structural diversity, functional diversity and genetic diversity in order to define ecological area diversity intended for identification of ecosystem diversity. Obtained a numerical value from standardized values of all kind of diversities for a given sample plot, was suggested as ecological area index for calculation of ecosystem diversity in the study. This value is very important to summarize performance, healthy, sustainability and resilience of ecosystems.