杨树天牛发生量估计模型与抽样方法的研究  

Study on Estimating Model and Sampling Method of the Occurrence Quantity of Poplar Longicorn

作　　者：邵崇斌[1] 黄林[1] 陈辉 周嘉熹[1] 常韧 

机构地区：[1]西北林学院林学系

出　　处：《西北林学院学报》1995年第2期40-45,共6页Journal of Northwest Forestry University

基　　金：国家"八五"攻关专题

摘　　要：根据杨树天牛危害的特点，应用Ｃａｐｔｕｒｅ—Ｒｅｃａｐｔｕｒｅ模型，以两次抽样代替两次捕捉试验估计害虫发生量，精度在８０％以上。两次抽样采用系统抽样与随机抽样相结合的办法，构成系统随机样本，抽样强度在１５％以上，收到良好的效果。A capture-recapture model is applied to estimate the occurrence quantity of poplar longicorn. There the two-time capture test was replaced by two-time sample surrey. Systematic random sample was adopted in sampling. When sampling rate is 15%, its estimating precision and practical precision outstripes 80 %.

关 键 词：天牛 发生量 估计模型 精度 杨树 

分 类 号：S763.380.3[农业科学—森林保护学] S763.721.1[农业科学—林学]