基于Sentinel-2的UNVI植被指数及性能对比研究

朱曼,张立福,王楠,林昱坤,张琳姗,王飒,刘华亮

Comparative Study on UNVI Vegetation Index and Performance based on Sentinel-2

Man Zhu,Lifu Zhang,Nan Wan,Yukun Lin,Linshan Zhang,Sa Wang,Hualiang Liu

表3 用于对比分析的指数计算公式

Table 3 Indices used for comparison in this study

指数	计算公式
通用归一化植被指数UNVI	$U N V I = \frac{C_{v} - a ? C_{s} - C_{4}}{C_{w} + C_{v} + C_{s}}$
归一化植被指数NDVI	$N D V I = \frac{ρ_{N I R} - ρ_{R E D}}{ρ_{N I R} + ρ_{R E D}}$
增强型植被指数EVI	$E V I = 2.5 \times \frac{ρ_{N I R} - ρ_{R E D}}{ρ_{N I R} + 6 \times ρ_{R E D} - 7.5 \times ρ_{B L U E} + 1}$
宽动态植被指数WDRVI	$W D R V I = \frac{0.2 \times ρ_{N I R} - ρ_{R E D}}{0.2 \times ρ_{N I R} + ρ_{R E D}}$
归一化红边指数NDre1	$N D r e 1 = \frac{ρ_{R E D 2} - ρ_{R E D 1}}{ρ_{R E D 2} + ρ_{R E D 2}}$
归一化水体指数NDWI	$N D W I = \frac{ρ_{G R E E N} - ρ_{N I R}}{ρ_{G R E E N} + ρ_{N I R}}$