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We define and accept natural heritage as being the ensemble of components and physical-geographical structures, floristic, faunistic and biocenotic of natural resources, of which importance and ecological value, economical, scientific, biogenetic, health, views, recreative and cultural-historic have relevant significance under the aspect of conserving biodiversity, of ecosystems functional integrity, genetical heritage conservation, vegetal and animal, and for life need satisfaction, wealth, culture and civilisation of present and future generations. Romania is a blessed place with many areas of unique beauty - as part of the natural heritage - with places where the spectacle of nature delights your eyes and breathtaking your every step. Constantly promoting philately themes that use natural wealth and beauty of our country as subjects, the administrative entity (with various names over time) responsible for issuing postage stamps performs a series of postage stamps in whose images are found rarities of flora and fauna, a miracle of nature. In this paper, we bring to discussion, among other things, the most significant philatelic peculiarities in the "Petea Creek " Natural Reservation.

Paleontological location of the Pleistocene fauna of hairy rhinos and mammoths near the village. Starunya Bogorodchany district of Ivano-Frankivsk region (Prykarpathian, Ukraine) is considered as a paleoclimatic rapper of global changes and a stratigraphic "bridge" linking stratigraphic patterns of the Upper Pleistocene of Western Europe and the plain territory of Ukraine. This is important for the reconstruction of global climate change and the transformation of natural and man-made geosystems.

The problem of trees selection in urban green spaces has been reviewed. Vitality of the dominant representatives of the most spread woody plants types used in urban areas landscaping has been analyzed. The advantages of native tree species usage under exotic species in cities greenery, which has been in higher phytomeliorative ability of indigenous species, their adaptability to environmental conditions and effective use of available resources, have been found. The criteria for assessing the vitality of plants at different levels of biosystem organization have been accented; key parameters of adapted species protective processes and destructive parameters of unstable species in stressful growing conditions have been highlighted. The most informative indicators of woody plants life condition in urban areas have been morphologic - square, weight and linear parameters of vegetative and generative organs, necrosis, diseases and pests damages presence, the level of dechromation and crown defoliation and physiological - content and ratio of photosynthetic pigments, metabolic composition of leaves, acidity level and buffer stability of leave 's internal environment. The use of resistant to anthropogenic pollution species of Salix L. genus as effective phytoremediants of technologically-transformed ecosystems has been proposed. Sensitive to environmental contamination Populus L. and Pinus L. species have been not recommended for planting in urban areas. However, they can be used as informative bioindicators of environmental ecological condition. Middle resistant species of Betula L., Acer L., Aesculus L., Tilia L. and Pinus L. genus have been recommended to implementation in urban ecosystems greening of recreation areas - parks and squares. Sustainability of the trees genera analyzed in terms of anthropogenic pressure has increased in the following range: Aesculus L. → Pinus L. → Populus L. → Tilia L. → Betula L. → Acer L. → Salix L.