GB/T 8822.13-1988
ActiveSeed zones of Chinese forest trees--Seed zones of Ulmus pumila L.
中国林木种子区 白榆种子区
Application Summary AI generated
This standard defines the geographic seed zones for Ulmus pumila L. (Siberian elm) within China, specifying the boundaries and conditions for seed collection and transfer. It is applied in forestry and ecological restoration projects to ensure that seeds are sourced from and used within appropriate climatic and ecological regions, thereby improving seedling survival and growth. The standard guides foresters, nurseries, and land managers in selecting locally adapted seed stock for afforestation and reforestation efforts.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.