利用多重抽样估计稀有物种的种类数

Estimating the Number of Rare Species by multisampling

利用矩估计和二个稳健估计方法(jackknife估计,bootstrap估计)来处理野外生态学工作者的调查数据,在假定已经发现一些稀有物种的情形下,通过统计推断得到那些未被发现的物种的种类数.利用本文所提出的方法调查水稻田的昆虫群落和林地的地面植被群落的稀有种是十分有效的.

Three methods (moment estimator, jackknife estimator, bootstrap estimator) are presented for estimating the number of rare species by the sampling of quadrats. These sampling are often used by field ecologists. Three explicit estimators are derived in the paper on the assumption that investigators have found some rare species. An illustration study is given to show effectiveness of the methods.