Investor Presentaiton

Vegetation variations 44°N The spatial distribution of the mean annual NDVI in Gansu exhibited high value in southeast but low value in northwest during the period of 2001 to 2017, suggesting high spatial variability in its distribution pattern. NDVI was found to be increased at a rate around 0.03 per year in southeast Gansu, but no significant changes in other regions Seasonal clusters of NDVI were found along both latitude and longitude. 42°N 40°N 38°N 36°N 34°N Figure 2. The mean NDVI (a) and NDVI trend (b) between 2001 and 2017. The NDVI along latitude(a) and longitude (d). For the trend map, only significant trends with 95% significance level are presented. (a) mean NDVI 44°N (b) NDVI trend 0.04 0.9 0.8 42°N 0.7 27 0.6 40°N 0.5 38°N 0.4 333 0.3 36°N 0.2 34°N 0.1 0.03 0.02 0.01 0 -0.01 -0.02 -0.03 32°N 0 32°N -0.04 92°E 96°E 100°E 104°E 108°E 92°E 96°E 100°E 104°E 108°E Longitude Latitude (c) NDVI along latitude 0.3 44 42 40 38 36 32 34 0.2 0.1 888 32 0 2002 2004 2006 2008 2010 2012 2014 2016 2018 (d) NDVI along longitude 0.3 110 105 100 95 0 2002 2004 2006 2008 2010 2012 2014 2016 2018 Time (years) 0.2 0.1

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