Analysis of the Evergreen Broad-leaf Forest Through the Change of Elevation Gradient in the North of Fujian

Six plots with each area 1 600 m~2 which were analyzed by different species diversity measures were installed in the evergreen broadleaf forest through the change of elevation gradient in the north of Fujian. The results showed that the species diversity of evergreen broadleaf forest in low and high elevation were fewer than those in the middle elevation; species diversity appeared mid-altitude bulge; and the highest species turnover rate was always emerged on the low elevation disturbed by people or the high altitude with stern habitat. The two new indices β\-z、β\-h were put forward, whose results indicated they had good application.