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为了合理组织和经营林业,有计划地利用森林资源以及预测林分的将来,必须首先具有森林资源及其动态和状况等详细资料。统计资料应定期更换。但在解决不同的经营问题时,情报资料的更换周期也不一样。如果说为了详细说明林分的调查因子和更换林业地图,10～15年就足够的话,那么为了发现森林火灾,这个周期必须大大地缩短,在某些时期应为5～8
In order to organize and operate forestry reasonably, the planned use of forest resources and the future prediction of forest stand must first contain detailed information on forest resources and their dynamics and status. Statistics should be changed regularly. However, when it comes to solving different business problems, the cycle of changing intelligence information is also different. If 10-15 years are enough to explain in detail the survey factors for the stand and the forestry map, then in order to detect forest fires, the cycle must be greatly shortened, and in some periods it should be 5-8