生物群落的种—面积关系

唐志尧, 乔秀娟, 方精云

Species-area relationship in biological communities

Zhiyao Tang, Xiujuan Qiao, Jingyun Fang

图3 不同尺度的种—面积关系及主要影响因素。在双对数坐标轴上, 随着取样面积的增加, 幂函数种—面积关系表现出3个阶段: 在小尺度(调查面积AP远小于物种平均分布范围AR), 斜率(z值)较大; 在中尺度(AP小于AR), 斜率较小; 而在大尺度(AP大于AR), 斜率又开始增加(修订自Allen & White, 2003)。

Fig. 3 Species-area relationship and main factors influencing the slopes at different scales. The power-law species area relationship showed three phases: large z-values at micro-scale (with plot area, AP, much smaller than the mean range size, AR); small z-values at the meso-scale (AP smaller than AR), and large z-values at the macro-scale (AP larger than AR) (revised from Allen & White, 2003).