Introduction to Tianshan Rowan: Tianshan Rowan is a deciduous broad-leaved tree, all scattered in the Tianshan spruce forest community, with a total area of about 30 acres. It has the largest area and number in the central and eastern Tianshan forest area. of. The average tree height is about 10 meters, the diameter at breast height is 20 centimeters, and the crown width is about 8 meters. In spring, green leaves and white flowers, in autumn, yellow leaves and red fruits, and green spruce form a unique landscape.