Table 1.

Statistics summary of Illumina re-sequencing data per sample.

SampleID	Location	Latitude	Longitude	Mapping	Data
				rate (%)	volume(Gb)
P. davidiana
P. davidiana1	Shuangyashan	E 131°15′	N 46°64′	92.36	6.8
P. davidiana2	Shuangyashan	E 131°15′	N 46°64′	91.25	6.5
P. davidiana3	Huanan	E 130°55′	N 46°23′	92.08	8.2
P. davidiana4	Huanan	E 130°55′	N 46°23′	91.78	6.3
P. davidiana5	Heihe	E 127°52′	N 50°24′	91.25	6.9
P. davidiana6	Heihe	E 127°52′	N 50°24′	92.36	6.1
P. davidiana7	Heihe	E 127°52′	N 50°24′	92.08	6.2
P. davidiana8	Heihe	E 127°52′	N 50°24′	91.98	6.6
P. davidiana9	Heihe	E 127°52′	N 50°24′	92.05	7.0
P. davidiana10	Lianhuashan	E 124°49′	N 44°47′	93.25	7.2
P. davidiana11	Lianhuashan	E 124°49′	N 44°47′	91.28	6.8
P. davidiana12	Lianhuashan	E 124°49′	N 44°47′	91.89	6.3
P. davidiana13	Lianhuashan	E 124°49′	N 44°47′	91.21	7.3
P. davidiana14	Shuangshan	E 123°88′	N 43°68′	93.25	6.0
P. davidiana15	Shuangshan	E 123°88′	N 43°68′	92.08	6.1
P. davidiana16	Weichang	E 117°76′	N 41°93′	91.23	6.4
P. davidiana17	Wutai	E 113°25′	N 38°72′	91.78	7.5
P. davidiana18	Hualin	E 116°40′	N 39°90′	91.96	7.1
P. davidiana19	Wutai	E 113°25′	N 38°72′	91.98	6.9
P. davidiana20	Hualin	E 116°40′	N 39°90′	92.25	6.2
P. alba
P. alba1	Xinjiang	E 131°15′	N 46°64′	92.36	5.9
P. alba2	Xinjiang	E 131°15′	N 46°64′	91.25	6.2
P. alba3	Xinjiang	E 130°55′	N 46°23′	92.08	7.3
P. alba4	Xinjiang	E 130°55′	N 46°23′	92.78	6.3
P. alba5	Xinjiang	E 127°52′	N 50°24′	91.25	6.9
P. alba6	Xinjiang	E 127°52′	N 50°24′	92.36	6.2
P. alba7	Xinjiang	E 127°52′	N 50°24′	91.08	6.1
P. alba8	Xinjiang	E 127°52′	N 50°24′	91.98	6.1
P. alba9	Xinjiang	E 127°52′	N 50°24′	92.05	6.8
P. alba10	Xinjiang	E 124°49′	N 44°47′	93.25	6.5
P. alba11	Xinjiang	E 124°49′	N 44°47′	91.28	6.7
P. alba12	Xinjiang	E 124°49′	N 44°47′	91.89	6.0
P. alba13	Xinjiang	E 124°49′	N 44°47′	91.21	6.9
P. alba14	Xinjiang	E 123°88′	N 43°68′	93.25	6.6
P. alba15	Xinjiang	E 123°88′	N 43°68′	92.08	6.2
P. alba16	Xinjiang	E 123°88′	N 43°68′	91.78	6.0
P. alba17	Xinjiang	E 123°88′	N 43°68′	92.58	6.3
P. alba18	Xinjiang	E 126°66′	N 51°72′	91.32	6.5
P. alba19	Xinjiang	E 126°66′	N 51°72′	93.25	6.0