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森林经理的首要任务是研究和调查森林。为了设计和实施森林经营措施,一切调查因子都必须落实到每一森林调查小班。我国在1954年前进行森林经理清查森林资源时是采用以数理统计为基础的抽样调查方法。后来发展为以航摄象片判读区划小班,结合目测或实测的森林调查方法。从森林调查技术方法来说是较前者发展和提高了一步。根据我国目前森林调查技术力量不足的实际情况,如果采用根据航摄象片判读的森林资源清查方法,虽然不能提供地面调查所
The primary task of a forest manager is to study and investigate the forest. In order to design and implement forest management measures, all survey factors must be implemented in each forest investigation sub-class. In our country, before 1954, forest managers check the forest resources by adopting the method of sampling based on mathematical statistics. Later developed into the aerial photography interpretation of small class division, combined with visual or measured forest survey methods. This is one step ahead of the former from the technical approach of forest surveys. According to the current situation of inadequate technical strength of forest surveys in our country, if forest inventory method based on interpretation of aerial photos is adopted, although it is impossible to provide ground investigation institute