Difference between revisions of "Sample design"
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A domain is here a certain type of forest (e.g., stands with the dominating tree species ''Pinus contorta'') where a certain inventory-scheme should be applied, e.g. securing a certain sample size. The classification is done in the same manner as the forest domain-builder in PlanWise, i.e. the user can select stand-wise properties in the register and define (by using the logical operators) the conditions of a certain domain. If the same inventory-scheme should be applied in all stands in the current analysis area, no additional domains needs to be defined. | A domain is here a certain type of forest (e.g., stands with the dominating tree species ''Pinus contorta'') where a certain inventory-scheme should be applied, e.g. securing a certain sample size. The classification is done in the same manner as the forest domain-builder in PlanWise, i.e. the user can select stand-wise properties in the register and define (by using the logical operators) the conditions of a certain domain. If the same inventory-scheme should be applied in all stands in the current analysis area, no additional domains needs to be defined. | ||
| − | === | + | ===Strata === |
The stratification is done in each domain separately. The stands (their productive forest land areas) of a certain domain are related to one of the several user-defined strata. In addition to total area, the number of stands and the area of the largest stand can be viewed in each stratum. The stratum-matrix should first be arranged according to current forest state (by number of classes and class width) and, if desirable, defined by other variables than volume and age. | The stratification is done in each domain separately. The stands (their productive forest land areas) of a certain domain are related to one of the several user-defined strata. In addition to total area, the number of stands and the area of the largest stand can be viewed in each stratum. The stratum-matrix should first be arranged according to current forest state (by number of classes and class width) and, if desirable, defined by other variables than volume and age. | ||