Description
The Forest Propagation Goods Act (FoVG) or the Area of Origin Ordinance (FoVHgV) defines areas of origin for all tree species of forest importance that are subject to the law. The following text was made with minor amendments and additions from the page “National Inventory” FGRDEU of the Federal Institute for Agriculture and Food (BLE; https://fgrdeu.genres.de/nationales-inventar/herkunftsgebiete/fov-herkunftsgebiets-vo/) taken over. The National Inventory is a contribution to the implementation of the “Concept for the Conservation and Sustainable Use of Forest Genetic Resources in the Federal Republic of Germany”.
Ecological background:
The ecological conditions determine the natural distribution as well as the cultivation possibilities of the different tree species and represent the most important selection factors. Natural selection affects not only autochthonous populations, but also artificially justified stocks of native and foreign tree species. Populations within regions in response to prevailing environmental conditions generally form more similar characteristics than populations, each growing under different ecological conditions. Particularly important features of forest tree species are adaptedness and adaptability.
Climatic conditions are particularly decisive for the large-scale differentiation. In addition to the large-scale differentiation of the tree species, a small-scale adaptation to the local location conditions is also carried out.
Therefore, stocks from areas with similar ecological conditions are grouped into areas of origin.
Outlines of the demarcation of areas of origin
a) Delimitation according to ecological conditions
Horizontal delimitation
The horizontal demarcation of areas of origin takes place on the basis of forest growth areas and, where applicable, growth districts. This ensures that the areas of origin comply with the ecological requirements of the legal definition.
Forest location science refers to growth areas of large landscapes, which differ from others by geomorphology, climate, natural forest societies and landscape history. These large landscapes usually coincide with those of geographers and plant geographers. The growth district is a smaller, regional room unit with as uniform physiographic character as possible. Forest ecological criteria are in the foreground when delimiting growth districts. The boundaries of forest growth areas were aligned in the area of the former inner German border for the delimitation of the areas of origin.
Vertical delimitation
In the delimitation of areas of origin, the horizontal demarcation by growth area in highly vertically structured areas is complemented by consideration of the altitude level. This ensures that the areas of origin where the horizontal demarcation is not sufficient comply with the ecological requirements of the legal definition.
Due to geography, climate and natural forest societies, forest location science excludes altitude levels in order to take account of the height-zonal conditions. The position of the same heights shifts, due to climatic conditions, with decreasing geographical latitude (north-south), with decreasing continentality (east-west) and under the influence of the mass survey upwards.
B) Delimitation according to phenotypic or genetic characteristics
According to the legal definition, the area of origin is also described with regard to similar phenotypic and genetic characteristics of the tree species. These results from cultivation experience, provenance tests or genetic analyses were used to define the areas of origin. Genetic differentiation has more results in coniferous species than in deciduous species.
The spatial data sets contain the digital boundaries and numbers of the areas of origin for 16 of the native tree species that are subject to the FoVG. For the two poplar species Black-Pappel (Populus nigra) and Zitter-Pappel (Populus tremula), propagating material can be obtained from the entire federal territory.
The limits serve as a basis for the implementation of Section 40(4) of the BNatSchG within the framework of support measures, plans and projects of any kind in which the application of wood propagating material (seeds, cuttings, preferred woods) into the open nature plays a role.
Resources
| Name |
Format |
Description |
Link |
|
0 |
|
https://www.geoproxy.geoportal-th.de/geoproxy/services/geb_gehoelze_wfs |
Tags
- vorkommensgebiet
- fovg
- forstvermehrungsgut
- fovhgv
- förderung
- herkunftsgebiet
- kompensation
- gebietseigene-gehölze
- §-40-bnatschg