Abstract: The invention relates to a method for the determination of stand attributes with an instrument above the stand. In the method, three-dimensional information is collected from the stands by using such a number of sample hits, that individual trees or groups of trees can be distinguished. A three-dimensional tree height model is produced from collected information. Stand attributes—which are characteristics of individual trees or groups of trees and/or characteristics derived using these information for larger areas—are determined from the tree height model. The invention also relates to a computer program which can be used to carry out the second and third step of the method.