The human ecosystem has been formally segmented into protected areas and in the other areas there are no specific considerations on this issue.
Urban areas also have developed plans for the treatment of green spaces that represent a way of naturalizing these problematic spaces.
The rest of the natural heritage, most of the earth’s surface, is scarcely considered, from the point of view of its environmental protection, although the Urban Planning Plans and other planning tools of the territory have in many cases laid solid foundations for Promote its preservation.
Information and in-depth knowledge of the environmental reality that surrounds us is nowadays one of the essential elements when making decisions and inquiring about policies aimed at conservation and the improvement of the environment and our natural heritage.
In the specific case of natural heritage not formally considered protected, this task is even more complex, due to the multiplicity of existing methodologies, the little systematic knowledge of fauna and flora, the complexity of quantitative variables and the specificity of the spatial and temporal relations of the different elements that make up the environment.
The study and objectification of the concepts that define the value of this natural heritage are important and its novel technique is incipient. The valuation of natural heritage serves very different purposes.
One of the clearest is the need to establish priorities, an obligation that both public authorities and conservation organizations have when configuring their policies and programs or when undertaking actions. From a town hall that draws up its urban planning plan, to international organizations when it is convenient which habitats or species deserve protection.