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在点抽样中,每个点可能仅测定一、二株树。相对于寻找样点的旅途和设立样点的高成本来看,这往往被认为样木太少。有两个不同的方法被提出来解决这个问题。本文的目的是
In spot sampling, only one or two trees may be measured at each spot. This is often perceived as too little in comparison with the high cost of finding a spot for a trip and setting a sample. There are two different ways to solve this problem. The purpose of this article is