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由于林分有着复杂的林木结构,所以要正确的测定森林的数量与质量,就需要研究林分的生长发育特征和结构特征。只有深入的研究并掌握其结构规律性,才能多快好省地去测定森林的数量和质量,才能正确的解决与测树有关的理论问题、森林调查问题、林木材种结构和制定森林统计方法,以及进行优树选择等各种生产实践问题。测树学上和生产实践上把森林分子看作是最基本的测定对象,也就是说,必须按森林分子进行林分调查。
Because of the complexity of the forest structure, it is necessary to study the growth and development characteristics and structural characteristics of the forest to determine the quantity and quality of the forest correctly. Only in-depth study and grasp of the regularity of its structure can we measure the quantity and quality of forests more quickly and economically, so as to correctly solve the theoretical problems related to tree-finding, the problems of forest surveys, the structure of forest species and the formulation of forest statistics , As well as the selection of superior trees and other production practices. For the purposes of tree measurement and production practice, the forest element is regarded as the most basic measurement object, that is to say, the forest element investigation must be conducted by forest elements.