三峡库区重庆市壳斗科植物区系及其为建群种的森林类型

Floristic Characteristics of Fagaceae Pants and Forest Types with Fagaceae Species as Their Constructive Species in Chongqing Region of Three Gorges Reservoir Area

重庆市的壳斗科植物十分丰富,在森林植被的阔叶林中具有重要地位.重庆市有壳斗科植物6属55种,其生活型均为乔木,其中常绿乔木37种,落叶乔木18种.空间水平分布以大娄山、大巴山、武陵山为主.垂直分布在海拔1200m以下的8种,1200m以上的20种,1200m上下都有的27种.以壳斗植物为建群种的阔叶林有3个植被型15个群系.

Many species of Fagaceae are growing in Chongqing region, and these species play an important role in evergreen broad-leaved forests. In total, 55 species belonging to 6 genera are distributed in Chongqing region, 37 of which are evergreen tree species and 18 are deciduous tree species. These species are mainly distributed in the Dalou Mountains, the Daba Mountains and the Wuling Mountains, and 20 species grow in area above elevation of 1 200 m, 8 species occur other 27 species do not have limits in vertical distribution. In in area below elevation of 1 200 m, and the Chongqing region, there are 3 vegetation types of broad-leaved forests, involving 15 formations, which have Fagaceae species as their constructive species.