367854.fig.002
Figure 2: Overall trends in vegetation changes throughout the period 1982–2006. Percentages expressed changes in integrated monthly maximum GIMMS NDVI during the growing season over the study period. The significance of regression models was at the 0.05 level. 16.7% of the study area showed a significant increase trend. The area where integrated NDVI significantly increased mainly distributed in four regions: I (Banner or county ids: 24, 29, 30, 32, 34, 35, 36, 39, 42, 47, 50), II (Banner or county ids: 69, 70, 71, 72, 75, 76), III (Banner or county ids: 53, 55, 56, 61, 64, 73, 74), IV (Banner or county ids: 79, 81, 82, 83, 85, 87, 88).