Table 2 The correlation matrix for the relationships among the extreme-temperature indices in the agro-pastoral ecotone.

Indices	FD	SU	ID	TR	GSL	TX10	TX90	TN10	TN90	WSDI	CSDI	DTR	TNn	TXn	TXx	TNx
FD	1
SU	−0.85^**	1
ID	0.84^**	−0.65^**	1
TR	−0.56^**	0.74^**	−0.17	1
GSL	−0.97^**	0.86^**	−0.92^**	0.49^**	1
TX10	0.26	−0.06	0.45^**	0.27	−0.30^*	1
TX90	0.22	−0.27	−0.05	−0.44^**	−0.14	−0.19	1
TN10	0.11	−0.08	−0.04	−0.11	−0.04	0.27	0.00	1
TN90	0.07	−0.33^*	0.07	−0.33^*	−0.13	−0.17	0.11	−0.59^**	1
WSDI	0.06	−0.18	0.09	−0.31^*	−0.11	−0.08	0.34^*	0.08	0.27	1
CSDI	0.06	0.04	0.18	0.10	−0.08	0.22	−0.26	0.71^**	−0.47^**	0.08	1
DTR	0.25	−0.12	−0.27	−0.48^**	−0.04	−0.24	0.38^*	0.28	−0.19	−0.10	−0.06	1
TNn	−0.98^**	0.87^**	−0.79^**	0.59^**	0.95^**	−0.18	−0.16	−0.13	−0.11	−0.08	−0.09	−0.27	1
TXn	−0.93^**	0.87^**	−0.92^**	0.46^**	0.98^**	−0.32^*	−0.09	−0.05	−0.17	−0.16	−0.13	0.08	0.93^**	1
TXx	−0.88^**	0.87^**	−0.88^**	0.45^**	0.94^**	−0.13	−0.04	0.06	−0.24	−0.11	−0.04	0.13	0.89^**	0.95^**	1
TNx	−0.97^**	0.88^**	−0.83^**	0.63^**	0.97^**	−0.16	−0.21	−0.03	−0.18	−0.16	−0.04	−0.18	0.96^**	0.93^**	0.92^**	1

Note: ** and * represent significance at P < 0.01 and P < 0.05, respectively. All other values are not significant.

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