检查法第一经理期研究

A PRIMARY STUDY ON THE TECHNIC OF CONTROL METHOD

检查法是一种适合于异龄林的集约经营方法。本文在我国首次进行检查法应用研究（１９８７—１９９２）的基础上，对择伐林分的径级分布、混交比例、蓄积结构、生长量、择代强度等方面进行了系统分析，并比较了这些林分的蓄积生长量、经济效益等。应用该法不仅使蓄积生长量达到较高的水平，还充分发挥了森林的多种效益，使森林得以持续发展。与同样条件下的人工林皆伐方式相比具有一定的优越性。试验中改变了国外应用该法时的全林每木调查方法，代之以抽样调查，并利用参数预测（ＰＰＭ）和数学规划方法相结合对生长过程进行了预估，增强了实用性，使之成为可在生产中广泛应用的一种经营方式。

Control Method is one of the intensive management method used in uneven-aged forest management.Based in the appliance of this method from 1987 to 1992,the diameterdistributions,species compositions, stock structures,selection intensities and stock increments of the experimental stands were systematically analyzed.These stands were compared with some artificial plantations and some other selective cutting stands on stock increments and economical incomes.The use of this method not only made standing stock increment be 9.6m3/ha·a-1,but also gave full play to multiple forest effects.It was shown that with appliances of this method the stands could get sustained development and that in same conditions this system would be better than the clear cutting system usually used in artificial forests.Whole-stand tally,traditionally used in abroad when appling the Control Method, was substituted with sampling survey, and the stand growth processes were simulated and predicted with the integration of one parameter prediction method and one mathematical programming method.All these would strengthen the practicality of Control Method and make it be a management manner to be widely used in forestry production.