Science. 1963 Sep 27;141(3587):1276. doi: 10.1126/science.141.3587.1276.
Data on vegetation types in six 900-m(2) plots in the Midwest reveal that the species-area curves are not logarithmic but more nearly approach an exponential equation of the form y = kx(2) for areas less than 100 m(2). For larger areas the curve appears to be sigmoid.
中西部 6 个 900 平方米样地的植被类型数据表明，物种-面积曲线不是对数的，而是更接近形式为 y = kx(2) 的指数方程，对于小于 100 平方米的区域。对于更大的区域，曲线似乎呈 S 形。
