The paper briefly overviews different types of diversity; not only ecological ones but also its various socio, economical as well as local, regional and global technological appearances, like the importance of retaining irreplaceable cultural diversity and the diverse ways of thinking and behaviour. The first part of the study analyses these different types of diversity which are preserved. The discussion of the mutual connections of the bio-cultural diversity is the content of the next section. Sustainable development is in great need of adequate competencies and expertise, both in the planning and implementation phase of promoting programmes and projects, including the long-term and complicated effects of them. The fundamental condition of sustainability - and therefore any plan which intends to produce a sustainable socio, economical, moreover ecological system (SES), is that it should express the need for resilient improvement of institutions, and, in particular, the suitable institutionalisation of the decision making process. The research and assessment methodology of this study has been the gathering of a broad spectrum of social, economical, technological and ecological publications on this topic, evaluation of the scientific literature and also the combination of their results. The end of the paper consists of conclusions and furthermore, suggestions for scientists, experts and politicians on how to apply a holistic, multidisciplinary approach and methodology both in proposal and decision making processes. © 2013 WIT Press.

The paper presents a multidisciplinary expert system which can be applied in the field of ex-ante assessment both of regional development programmes and river basin management planning. The research introduces the 'complex knowledge space' model which is a further improvement of the environmental management model which was presented during the Conference on Environmental Engineering Education and Training organised by WIT 1996. © 2011 WIT Press.

The theme of the essay: The presentation of an environmental analysis model Aim and utility: environmental condition varieties as well as effects on people; economic and social activities behind the effects and their influence on changing environmental policy regulations; establish a conceptual organization which can support the analysis of interactions.