Table 2 Radiocarbon dates and location of each site mentioned in this paper.

Site No.	Site Names	Latitude(N)	Longitude (E)	Depth of peat (cm)	¹⁴ C date	error	Basal age (Cal yr BP)	References
1	Xingkaihu	45°19′	132°9′	140	1486	140	1733	16
2	Yangmu	45°36′	132°25′	145	3400	342	2325	17
3	Huling	45°49′	132°56′	70–80	3775	80	4188	18
4	Xinshugongshe	45°55′	130°34′	55–60	3991	82	4443	18
5	Shuguang	46°10′	133°03′	320–330	1600	70	1487	18
6	Dongsheng	46°29′	132°28′	140–150	6955	105	6955	18
7	Dongsheng	46°37′	132°31′	N/A	4417	307	4417	19
8	Jinlong	46°32′	132°35′	136	4027	308	4503	20
9	Qinghe1	46°35′	132°58′	85–90	1425	90	1350	18
10	Qinghe 2	46°35′	132°58′	N/A	1585	90	1470	18
11	Baoqing	46°36′	132°57′	120	1585	90	1585	17
12	Qinghe 3	46°36′	132°57′	N/A	1610	200	1560	18
13	Shenjiadian1	46°36′	130°38′	N/A	2470	80	2470	21
14	Shenjiadian2	46°36′	130°38′	195–200	2540	80	2541	17
15	Huachuan	46°37′	132°31′	N/A	4417	307	2388	17
16	Bielahonghe1	47°01′	130°43′	195	2375	167	5347	22
17	Bielahonghe2	47°31′	134°04′	168	4615	75	6465	22
18	Bielahonghe3	47°31′	134°04′	N/A	5650	95	5650	17
19	Qindeli1	47°55′	133°13′	196	9420	70	10651	22
20	Qindeli2	47°58′	133°8′	84–89	1790	200	1727	20
21	Qindeli3	48°00′	133°15′	225	9523	125	9525	17
22	Fuyuan	N/A	N/A	150	9300	100	9300	17
23	Yongfa	47°00′	130°15′	N/A	5655	215	5655	20
24	Xingshu	47°04′	133°40′	60	3990	80	3990	17
25	Tongjiang	48°05′	133°15′	80	4917	120	4917	23

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