Analysis of 22-year Drought Characteristics in Heilongjiang Province Based on Temperature Vegetation Drought Index

Figure 7

Characteristics of annual drought change in province and regions: (a) Proportion of drought grade region in the whole province. (b) Proportion of drought grade region in different regions. (c) Characteristics of annual drought change in province. (d) Characteristics of annual drought change in regions.

(a)

(b)

(c)

(d)