The temporary sample plot is a circular sample unit that covers an area of 400 m2. For each tree, we observe and measure the species, diameter, sunlight, and floor in relation to other trees, as well as the defoliation and the quality of the stems of deciduous trees and certain pines. In addition, the age and height of three trees are determined. Finally, a survey of the station and the vegetation of the undergrowth is carried out, and the characteristics of the soil are noted. Plot data also includes information about the location of the plots and the sampling plan. These data are acquired as part of the fourth ecoforest inventory in southern Quebec. They are used in particular to produce forest compilation results used to feed the calculation of forest opportunities in public forests in Quebec. They can also be useful in the development of private forests. The establishment of these plots took place from 2004 and will be completed in 2018. This database covers almost all of the territory south of the 52nd parallel of Quebec's public and private forest.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

__The link: *Access the data directory* is available in the section*Dataset Description Sheets; Additional Information*__. The original ecoforest map and the results of the 4th ecoforest inventory of southern Quebec constitute a grouping of ecoforest data including the original ecoforest map of the 4th inventory and numerous other tables providing information directly related to ecoforest populations. The information in this dataset corresponds to the forest profile up to the year of aerial photography. Among the numerous tables and classes of entities that the product brings together, the following groups can be distinguished: * The original ecoforest map of the 4th inventory made up of ecoforest polygons. This is the geographic base to which all other data are attached; * The forest compilations of the 4th inventory which contain, among other things, the gross commercial volumes evaluated by nature; * The ecological classification of Quebec territory; * The characterization data of forest stations. __Note that__ the original ecoforest map of the 4th inventory has been complete since 2018 and that no new mapping has been added. This differs from the current original ecoforest map where, each year, a portion of Quebec's territory is photo-interpreted and integrated into the provincial product by replacing the cartographic information from the previous inventory. In addition, some areas have not been mapped since the 3rd inventory and are therefore absent from the original ecoforest map from the 4th inventory.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**