Analysis of Drought Characteristics in Xilingol Grassland of Northern China Based on SPEI and Its Impact on Vegetation

Table 3

Pearson correlation coefficient of NDVI and SPEI in Xilingol at different time scales.

NDVI	SPEI
	0 month	1 month	2 months	3 months
April	−0.411	0.184	0.051	−0.362
May	0.204	0.408	0.044	0.288
June		0.182	0.102	0.224
July			0.001	−0.102
August	0.078		0.481	−0.4
September	0.34	0.457
October	0.004	0.488	0.303

Significant at and levels.