福建中亚热带常绿阔叶林物种多样性的空间格局

对福建中亚热带不同区域、不同海拔梯度的常绿阔叶林群落进行物种多样性测定 ,结果表明 :(1 )在 6个区域中 ,乔木层的物种多样性指数平均值高于灌木层的平均值 ;对丰富度指数 ,太平乔、灌木层 (R1、R2 )最高 ,茂地 (R1、R2 )最低 ;对多样性指数 ,乔木层夏道 (D1、H1)最高 ,土堡 (D1)、茂地 (H1)分别最低 ,灌木层峡阳(D2 )、大洋 (H2 )分别最高 ,太平 (D2 、H2 )最低 ;对均匀度指数 ,乔木层中茂地 (E1、J1)最高 ,土堡 (E1、J1)最低 ,灌木层峡阳 (E2 )、大洋 (J2 )分别最高 ,太平 (E2 、J2 )最低 ;不同区域乔木层的物种多样性指数曲线变化比灌木层缓和 ;(2 )在 6个海拔梯度群落 ,对乔木层物种数和丰富度指数在海拔 2 0 0～ 40 0m(S1、R1)最高 ,对灌木层在海拔 60 0～ 80 0m(S1、R1)最高 ;对乔、灌木层物种数和丰富度指数在海拔 1 0 0 0～ 1 2 0 0m(S1、S2 、R1、R2 )最低 ;对多样性指数 ,在乔木层中在海拔 2 0 0～ 40 0m(D1、H1)最高 ,在海拔 80 0～ 1 0 0 0m(D1、H1)最低 ,在灌木层中在海拔 60 0～ 80 0m(D2 、H2 )最高 ,海拔 80 0～ 1 0 0 0m(D2 、H2 )最低 ;对均匀度指数 ,乔木层中在海拔 10 0 0～ 1 2 0 0m(E1、J1)最高 ,在海拔 80 0～ 1 0 0 0m(E1、J1)最低 ,灌木层中在海拔 1 0 0 0～ 1 2 0 0m(E2 )

Study on the spatial pattern of species diversity for the subtropical evergreen broadleaf forest in Fujian Province

The spatial pattern of species diversity of the subtropical evergreen broadleaf forests were studied by species diversity indices in six areas and six elevation grades in Fujian Province. The results show that:⑴In six areas,the mean value of species diversity indices in the tree layer are higher than those in the shrub layer;and that the richness indices(R_1,R_2)in Taiping are the highest and those in Maodi the lowest;the diversity indices(D_1,H_1)in Xiadao are the highest and(D_1)in Tubao and(H_1)in Maodi the lowest in tree layer,and(D_2)in Xiayang and(H_2)in Dayang are the highest and(D_2)and(H_2)in TaiPing the lowest in shrub layer;and that the evenness indices(E_1,J_1)in Maodi are the highest and in Tubao the lowest in tree layer;and(E_2)in Xiayang and(J_2)in Dayang are the highest and(E_2,J_2)in Taiping the lowest in shrub layer,and that the variety of species diversity index curves in tree layer in six areas are more slower than those in shrub layer;(2)The species number(S_1)and the richness index(R_1)are the highest in the elevation of 200～400 m in tree layer and(S_1,R_1)are the highest of 600～800 m in shrub layer, the species numbers(S_1,S_2)and the richness indices(R_1,R_2)are the lowest in the elevation of 1 000～1 200 m in tree and shrub layer;and that the diversity indices(D_1,H_1)are the highest in the elevation of 200～400 m and of 800～1 000 m the lowest in tree layer, and (D_2,H_2) of 600～800 m the highest and of 800～1 000 m the lowest of shrub layer; and that the evenness indices(E_1,J_1)are the highest of 1 000～1 200 m and of 800～1 000 m the lowest in tree layer,and(E_2)of 1 000～1 200 m and(J_2)of 200～400 m are the highest and(E_2,J_2)of 800～1 000 m the lowest in shrub layer;(3)There were more or less differences in the species diversity indices which are used to be the token of the community so that they must be selectively used according to the facts. There is important significance to study the spatial pattern distribution of the species diversity indices for the recovering and rebuilding of subtropical evergreen broadleaf forest.