在二类林业调查中,常会遇到少数近期即将经营利用的小片森林(或林班、小班)。主管单位对于这类片林十分重视,往往要求按照类似于三类调查的目的进行清查,以期获得准确的资源数据,安排近期规划。这些片林有的是近期主伐对象,有的是抚育、次改等对象。由于各种经营措施规划要求、林分情况等的不同,不可能采用统一的调查方法。如果将它们 In the second type of forestry survey, a small number of small-scale forests (or forestry classes and small classes) that are going to be operated and utilized in the near future are often encountered. The competent authorities attach great importance to these types of forests and often require that inventories be conducted for similar purposes as the three types of surveys with a view to obtaining accurate resource data and arranging immediate planning. Some of these film forest is the main object of recent festivals, and some tending, secondary change and other objects. Due to the different planning requirements of various management measures and the differences in the stands, it is impossible to adopt a unified survey method. If they are