The results indicated that it is unbiased to estimate basal area of stand but inefficient when estimating stems per hectare by point sampling.

结果表明：点抽样估计林分断面积是无偏的，而估计林分每公顷株数效率不高。

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The principle and method of line intersect sampling for surveying stand volume were introduced in this paper. and tested in coniferous forests and broad-leaved forests.

系统地论述了林分蓄积量调查的线截抽样原理和方法、并在针叶林和阔叶林中进行了验证。

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The book also provides colorful anecdotes about Dr. Topol's own sampling of these products, as both a doctor and stand-in patient.

WSJ: Book Review: The Creative Destruction of Medicine