Table 2 Classification criteria for vegetation cover status based on normalized vegetation index (NDVI).

From: Analysis of vegetation coverage changes and driving forces in the source region of the yellow river

Overlay partition

NDVI

Bare area

0

Low coverage area

0 ~ 0.2

Low and medium coverage area

0.2 ~ 0.4

Medium coverage area

0.4 ~ 0.6

Medium and high coverage area

0.6 ~ 0.8

High coverage area

0.8 ~ 1