This data set is a polygon coverage that can be used to identify the location of Seed Zones, which were developed to ensure that the variation of climatic parameters (e.g. growing season length) within each zone corresponds with the adaptive variation exhibited by major commercial tree species in the province.
Seed zones were derived using the Ontario Climate Model, which helped to balance climatic variability and risk within each zone. The seed zones were then made operational by drawing boundaries to coincide with nearby geographic or administrative boundaries.
For more information, please refer to the Ministry of Natural Resources (MNR) policy directive FOR 06 02 01, which is available for download from the additional documentation section.
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