The Determination of Co-dominant Species in Three Types of Forest in Heishiding Nature Reserve,Guangdong

The number of co-dominant species of various forest types, including the conifer forest,mixed the coniferous and broad-leaved mnixed forest, and evergreen broad-leaved forest,in Heishiding Nature Reserve, Guangdong province, were determinated with the formula proposed by Kikvidze Ohsawa. We used the species importance value for the measure rather than using the relative abundance of species. The results indicated that the number of co-dominant species in the conifer forest,coniferous and broad-leaved mixed forest and evergreen broad-leaved forest is 4,15 or and 23, respectively.