Current issue: 53(4)
Under compilation: 54(1)
The aim of the study is to find out how do the peatlands develop after drainage and how does the type of peat affect the growing conditions of the forest on it. Study is based on measurements made in summer 1919 in about middle Finland (districts of Loppi, Yläne, Kihniö, Nerkoo, Orivesi, Vilppula, Multia and Karstula). The macroscopic identified content of the peat was analyzed: the different peat types were categorized according the species of the most abundant plant remains. The characteristics of the studied peat types are represented.
The conclusion of the study is that when deciding about the suitability of the drained peatland for afforestation, the thickness and content of the peat must be considered in addition to peat type.
The first part of the article presents an overview of peatlands and their classification on the basis of e.g. their nutrient content in Finland. The second part (a separate pdf file) represents the different types of peatland with their indicator plants in Finland.
Peatlands can be classified in several ways, depending on the purpose of the classification. There are also differences whether an area is considered biologically or geographically as a peatland. For agricultural or forestry purposes the peatlands can be classified on the basis of their nutrient content.
Article also discusses the three ways of emergence of peatlands and the variations of water relations of peatlands.