土壤盐渍化光学遥感监测方法研究进展
骆振海, 张超, 冯绍元, 唐敏, 刘锐, 孔纪迎

Advances in research on methods for optical remote sensing monitoring of soil salinization
LUO Zhenhai, ZHANG Chao, FENG Shaoyuan, TANG Min, LIU Rui, KONG Jiying
表5 常用光谱指数计算公式
Tab.5 Commonly used spectral indices calculation formulas
特征参量 变量名称 公式 参考文献
盐分
指数
盐分指数(salinity index, SI) B × R   [9]
盐分指数(SI1) G × R   [17,51
52]
盐分指数(SI2) G 2 + R 2 + N I R 2 [17,51
52]
盐分指数(SI3) G 2 + R 2   [17,51
52]
盐分指数(SI6) B × R G [52]
盐分指数(SI7) N I R × R G [53]
亮度指数(brightness index, BI) R 2 + N I R 2   [51,54]
归一化盐分指数(normalized salinity index, NDSI) R - N I R R + N I R [55]
盐分指数(salinity index,SI-T) R N I R × 100 [56]
强度指数(intensity index, INT1) G + R 2 [51,57]
植被
指数
土壤调节植被指数(soil-adjusted vegetation index, SAVI) ( N I R - R ) × 1.5 N I R + R + 0.5 [17,58]
归一化植被指数(normalized vegetation index, NDVI) N I R - R N I R + R [16,17
59]
重整化差异植被指数(renormalize differential vegetation index, RDVI) N I R - R N I R + R   [60]
绿色归一化差分植被指数(green normalized differential vegetation index, GNDVI) N I R - G N I R + G [60]
三角植被指数(triangular vegetation index, TVI) N I R - R N I R + R + 0.5   [60]
差值植被指数(differential vegetation index, DVI) N I R - R [16,17]
归一化差值绿色指数(normalized difference green index, NDGI) G - R G + R [61]
增强化归一植被指数(enhanced normalized differential vegetation index, ENDVI) N I R + S W I R 2 - R N I R + S W I R 2 + R [11]
水分
指数
水分指数(water index, WI) N I R S W I R [10]
归一化水分指数(normalized differential water index, NDWI) N I R - S W I R N I R + S W I R [15,62]
温度 温度植被干旱指数(temperature vegetation drought index, TVDI) T S - T S m i n T S m a x - T S m i n [63]
植被温度条件指数(vegetation temperature condition index, VTCI) L S T N D V I m a x - L S T N D V I L S T N D V I m a x - L S T N D V I m i n [64]