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在银北二代防护林网设立了７２块标准地，１２２个监测点，连续跟踪调查，主要虫害可分为两类，枝叶害虫与蛀干害虫。并对蛀干害虫应用Ｃａｐｔｕｒｅ－Ｒｅｃａｐｔｕｒｅ模型及时进行林间种群数量估计监测，效果良好。
There were 72 standard sites and 122 monitoring sites set up in the second-generation shelterbelt network in the northern part of Yinbei. The investigation was followed up continuously. The main pests can be divided into two types, foliage pests and borers. And the use of Capture-Recapture model of borer pests in time for forest population estimation, good results.