Spatial Differentiation Analysis of Water Quality in Dianchi Lake Based on GF-5 NDVI Characteristic Optimization

Table 6

NDVI threshold division standard.

NDVI value	−1 ≤ NDVI < 0	0 ≤ NDVI < 1	NDVI = 1
Degree	No aquatic plants	Sparse aquatic plants	Dense aquatic plant