中文摘要：

目前,捕获再捕获抽样已广泛应用于生物科学、社会科学、生命科学和医学的调查研究中。为此,对捕获再捕获抽样的最常用的Lincoln-Petersen估计量和Chapman估计量进行模拟比较,提出新的有偏估计量,其偏差介于上述两个估计量之间。理论和模拟结果显示：新估计量有时优于其它两个估计量;在实际应用中,当上述两个估计量较难取舍时,新估计量可以作为一个更好的选择。

英文摘要：

Capture-recapture sampling is often applied in biological sciences,social sciences,life and medical sciences.This paper simulates and compares the two common Lincoln-Petersen estimator and Chapman estimator of capture-recapture sampling.Moreover,a new estimator with bias between the above two estimators is provided.Theoretical results and simulation show that the new estimator is better than others while the above two estimators are not superior to each other.