Climate response of tree-ring width in Larix sibirica growing in the drought-stressed forest-steppe ecotone of northern Mongolia

Table 1 Descriptive statistics of the sampled L. sibirica trees, including the number of sample trees (N), mean tree-ring width, values of the expressed population signal (EPS), mean sensitivity and first-order auto correlation (arithmetic means ± standard deviation)

Site	Number	Ring width (mm)	EPS	Mean sensitivity	Autocorrelation
A-FI-O	22	1.50 ± 0.50	1.00	0.41 ± 0.06 ab	0.73 ± 0.08 abcd
A-FI-M	41	0.91 ± 0.43	1.00	0.38 ± 0.08 abcd	0.79 ± 0.10 ab
A-FI-Y	18	1.00 ± 0.51	1.00	0.39 ± 0.07 abcd	0.70 ± 0.14 cde
A-FE-O	12	1.50 ± 0.26	0.96	0.48 ± 0.05 e	0.68 ± 0.06 de
A-FE-M	10	2.20 ± 0.65	0.96	0.40 ± 0.05 ab	0.70 ± 0.05 cde
A-FE-Y	8	2.10 ± 0.73	0.94	0.37 ± 0.04 abcdf	0.67 ± 0.11 de
B-FI-O	32	1.17 ± 0.41	0.97	0.38 ± 0.05 abcd	0.79 ± 0.08 ab
B-FI-M	72	1.47 ± 0.49	0.99	0.36 ± 0.06 acdf	0.78 ± 0.08 abc
B-FI-Y	18	1.68 ± 0.73	0.96	0.34 ± 0.07 cdfg	0.72 ± 0.14 bcde
B-FE-O	0	–	–	–	–
B-FE-M	19	1.93 ± 0.50	0.98	0.42 ± 0.05 b	0.70 ± 0.09 cde
B-FE-Y	14	2.39 ± 0.56	0.95	0.41 ± 0.06 ab	0.63 ± 0.16 e
C-FI-O	19	1.04 ± 0.20	0.95	0.33 ± 0.05 cdf	0.75 ± 0.10 abcd
C-FI-M	4	1.57 ± 0.47	0.83	0.29 ± 0.04 g	0.80 ± 0.07 a
C-FI-Y	46	1.48 ± 0.59	0.98	0.32 ± 0.07 fg	0.80 ± 0.07 ab
C-FE-O	9	1.53 ± 0.36	0.95	0.42 ± 0.02 b	0.68 ± 0.10 de
C-FE-M	3	1.24 ± 0.69	0.71	0.38 ± 0.05 abcd	0.68 ± 0.03 de
C-FE-Y	18	1.87 ± 0.83	0.96	0.39 ± 0.07 abd	0.70 ± 0.08 cde

A, B, C site A, B, C. FI forest interior, FE forest edge, O old trees (cambial age >90 years), M middle-aged trees (50 to 90 years), Y young trees (<50 years)
Statistics: Duncan’s multiple range test, df = 367, P ≤ 0.05. Means with a common letter do not differ significantly

ISSN: 1297-966X