The forests of southern Caspian region in Iran is considered the remnants of Hyrcanian vegetation zone within the Euro-Siberian region. The vegetation zone is a green belt stretching over the northern slopes of Alborz mountain ranges and includes three habitats of alluvial flats of coastal plain, northern slopes of Alborz, and the subalpine meadows. The most outstanding feature of the region is the broad-leaved deciduous forests, ranging in altitude from sea level to 2800 m. The vegetation is well distinguished from other areas by high annual precipitation (600-2000mm), a considerable part of which falls in summer. The high air humidity and higher winter temperatures at the lower altitudes make the greater part of this area most favourable for mesic forest, not unlike those of western or southern Europe. Inrecent decades, a variety of anthropogenic forces such as urbanization, agricultural expansion, and unsustainable logging has reduced the extent and impacted the health and function of these forests(Figure 1). In this study, we use high resolution satellite observation over two decades to quantify the changes in southern Caspian forests, a challenging problem due to complex terrain and frequent cloud cover. Most of the recent remote sensing based maps are at continental and global scales (1-km resolution) and do not provide detailed information on land use activities, deforestation patterns, and agricultural expansions in the region [2] [7].