Hi all, there are several tags to indicate vegetation with leaves, e.g. "landuse=forest", "natural=wood", "natural=scrub", "natural=tree" and others.
Today we have one additional key "wood=" to describe the type of leaves. This key is arguable. The oxford dictionary says: "wood = 1. The hard fibrous material that forms the main substance of the trunk or branches of a tree or shrub. 2. (also woods) An area of land, smaller than a forest, that is covered with growing trees." The usage of ''wood='' for the type of leaves is not suitable because wood relates to the trunc, not to the leaves. Maybe it is suitable for "natural=wood", but the key also relates to forest, trees, hedges and shrubs. The values "wood=coniferous" and "wood=deciduous" are ambiguous. ''Coniferous'' describes the kind of seeds, not the type of leaves, nor the phenology. ''Deciduous'' describes the phenology, not the type of leaves, but it seems that it is used for the leaftype. ''Coniferous'' stand for "cone-bearing seed plants with vascular tissue". This plants are mostly needle-leafed, but there also exist some with broad leaves. There is also the value "wood=evergreen" to describe the phenology, but not the kind of leaves. This applies to needle-leaved and broad-leaved plants. Other values are ''palm'', ''nipa_palm'', ''eucalypt'', ''filao'' and ''casuarina''. There is no tagging for evergreen broad-leaved plants (e.g. most trees in the rain forest), nor for deciduous needle-leaved plants (e.g. larchs). It is very complicated to include all combinations of leave type and phenology in one key, especially in consideration that the phenology is not known in every case. We need two distinct keys to describe the type and phenology of leaves, suitable for all kind of plants and all kind of keys. It is advantageous to use new keys, to avoid confusion with changing values of an already used key. Proposal: "leaf_type=" describes the type of leaves, such as broad-leaved or needle-leaved. "leaf_cycle=" describes the phenology of leaves, such as evergreen or deciduous. http://wiki.openstreetmap.org/wiki/Proposed_features/leaftype Rudolf _______________________________________________ Tagging mailing list [email protected] https://lists.openstreetmap.org/listinfo/tagging
