To accurately determine the population size and grasp the fundamental status of Cathaya argyrophylla within the nature reserve, a durable, unique identification plate has been affixed to each individual tree. Each plate contains a unique serial number, the species name (Cathaya argyrophylla), its protection level, and a customized QR code. Simultaneously with the tagging process, a comprehensive "health check-up" is conducted for every tree, with all data recorded to establish an "Individual Dossier." Key recorded parameters include: serial number, location coordinates (latitude and longitude), altitude, tree height, DBH (diameter at breast height), crown width, growth vigor, slope aspect, slope position, soil exposure status, associated plant species, and the presence of any pests, diseases, mechanical damage, dead branches, or other notable conditions.
Prior to the tagging initiative, the nature reserve had already established a preliminary understanding of the Cathaya argyrophylla distribution through routine patrols and general surveys. This prior knowledge enabled a well-targeted tagging operation, facilitating the development of optimal routes and efficient personnel allocation.
Durable materials resistant to sunlight, rain, and corrosion—such as metal, PVC, or composite materials—should be selected. The fastening method should employ flexible straps that do not damage the tree, allowing sufficient space for growth to avoid creating a "hanging noose" or "embedded girdle" effect.
