Über die Gefährdung der Flora der Nordbezirke der DDR
[Endangering of the flora of the northern part of the German Democratic Republic]
The development of the flora on the territorium of the northern part of the German Democratic Republic during the postglacial period till today has been followed. Six stages corresponding to human activity are differentiated. The maximal richness of the indigenous flora in the period between 1700 and 1850 respectively of the total flora in the years 1950 till 1960 is indicated. Since that time a rapid, catastrophic decrease has been registrated.