*3.2. Dating the Resin Collection from the Trees*

**Min**  Based on the *t*- and G-values between the individual ring-width time series and the corresponding local master chronologies, each annual ring was given an exact calendar year (Table 3). Through the statistical tests and synchronization test between the ring-width time series from the wounds and the opposite sides and/or the corresponding local master chronologies (Table 3 and Figure 5), the years of resin collection were successfully dated for 83 red pines out of a total 88 trees (Table 4). Among the successfully dated trees, five trees in NS were dated by comparing their ring-width time series with the local master chronology because their time series were not enough long for *t*- and G-tests. Finally, from the wood cell development phases from the wounds to the outermost annual ring, the resin collection seasons were successfully determined (Table 4).

70. 70.0 **Table 3.** Statistical analysis of individual ring-width time series and the corresponding local master chronology (*p* < 0.05).


BM: Bomunsa, NS: Namsan, SN: Seoknamsa, HI: Haeinsa, NW: Namwon, AM: Anmyeondo.

**Figure 5.** An example of synchronizations between individual ring-width times series from the wound surfaces and the local master chronology (AM1).


**Table 4.** The dated years and seasons for resin collection.

BM: Bomunsa, NS: Namsan, SN: Seoknamsa, HI: Haeinsa, NW: Namwon, AM: Anmyeondo.

All the sites in G1 and HI1 in G2 showed that the resin collection occurred between autumn 1938 and autumn 1944, i.e., almost at the end of the Japanese colonial period (1910–1945). The resin collection in the other sites in G2, except HI1, was between spring 1956 and late summer 1964, i.e., after the Korean War (1950–1953) (Figure 6). Usually, the resin collection in G1 was longer than that in G2, namely in G1 for 5.6 (±1.9) years and in G2 for 8.8 (±2.2) years.

**Figure 6.** The length of local master chronologies ( s ( : : G1, G1, : : G2) in different resin collection years (( : : resin collection periods). s). : : the Japanese colonial period, d, : : the Korean War, BM: Bomunsa, NS: Namsan, SN: Seoknamsa, HI: Haeinsa, NW: Namwon, AM: Anmyeondo.

Anatomical investigation revealed that 53.0% red pines (44 out of 83 trees) were subjected to resin collection between spring and early summer, 24.1% (20 trees) between late summer and autumn, and 22.9% (19 trees) between autumn of the current year and spring of the next year.

BM's

BM's

BM's

BM's

BM's
