The Hyrcanian forest is a unique natural heritage of global importance. The Caspian region harbors the world's last remaining primary forests of the temperate deciduous forest formation.
In Europe, easte North America and East Asia the temperate deciduous forests are reduced to less than 1/3 of their natural distribution area, and most of the remaining stands are changed to secondary woodland and artificial plantations. Semi-natural and old deciduous forests survived or regenerated in few protected areas and only on small sites. In Europe and East Asia, this is the result of several thousands of years of land use history, but in North America the deciduous forests were changed during the last four centuries.
The Caspian region in the North of Iran is one of the most important refuge and survival areas of “Arcto-tertiary” forest vegetation in weste Eurasia (like the Colchic in Georgia and Turkey). The Caspian (together with the Colchic) forests are the oldest (in terms of their
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نویسنده: نگین فراهانی
تاريخ: دوشنبه
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1395 ساعت: 0:26