土壤盐渍化遥感监测模型构建方法现状与发展趋势

李星佑, 张飞, 王筝

Present situation and development trend in building remote sensing monitoring models of soil salinization

LI Xingyou, ZHANG Fei, WANG Zheng

表1 建模指数公式

Tab.1 Modeling exponential formula

指数类型		指数		指数公式^①	参考文献
盐分指数		盐分指数(salinity index,SI-T)		$S I - T = (R / N I R) \times 100$	[44]
		盐分指数(normalized difference salinity index,NDSI)		$N D S I = (R - N I R) / (R + N I R)$	[45]
		盐分指数(salinity index1,SI1)		$S I 1 = \sqrt{R G}$	[45]
		盐分指数(salinity index1,SI2)		$S I 2 = \sqrt{G^{2} + R^{2} + N I R^{2}}$	[45]
		盐分指数(salinity index1,SI3)		$S I 3 = \sqrt{G^{2} + R^{2}}$	[45]
		盐分指数(salinity index,S1)		$S 1 = B / R$	[46]
		盐分指数(salinity index,S2)		$S 2 = (B - R) / (B + R)$	[46]
		盐分指数(salinity index,S3)		$S 3 = (G ? R) / B$	[46]
		盐分指数(salinity index,S5)		$S 5 = (B ? R) / G$	[46]
		盐分指数(salinity index,S6)		$S 6 = (R ? N I R) / G$	[46]
		盐分比指数(salinity ratio index,SAIO)		$S A I O = (R - N I R) / (G + N I R)$	[47]
		黏土指数(clay index,CLEX)		$C L E X = S W I R 1 / S W I R 2$	[47]
		石膏指数(gypsum index,GYEX)		$G Y E X = (S W I R 1 - N I R) / (S W I R 1 + N I R)$	[47]
		亮度指数(brightness index,BRI)		$B R I = \sqrt{G^{2} + R^{2}}$	[47]
		碳酸盐岩指数(carbonate index,CAEX)		$C A E X = R / G$	[47]
植被指数	简单比值指数(simple ratio vegetation index,SR)		$S R = N I R / R$			[48]
	冠层响应盐指数(canopy response salinity index,CRSI)		$C R S I = \frac{\sqrt{(N I R ? R) - (G ? R)}}{\sqrt{(N I R ? R) + (G ? R)}}$			[49]
	归一化植被指数(normalized difference infrared index,NDVI)		$N D V I = (N I R - R) / (N I R + R)$			[45]
	增强植被指数(enhanced vegetation index,EVI)		$E V I = 2.5 (\frac{N I R - R}{N I R + 6 R - 7.5 B + 1})$			[50]
	差值植被指数(difference vegetation index,DVI)		$D V I = N I R - R$			[51]
	修改土壤调节植被指数(modified soil adjusted vegetation index,MSAVI)		$M S A V I = \frac{(2 N I R - 1) - \sqrt{{(2 N I R + 1)}^{2} - 8 (N I R - R)}}{2}$			[52]
	大气阻抗植被指数(atmospherically resistant vegetation index,ARVI)		$A R V I = \frac{N I R - (2 R - B)}{N I R + (2 R + B)}$			[52]
	广义植被归一化指数(generalized difference vegetation index,GDVI)		$G D V I = (N I R^{2} - R^{2}) / (N I R^{2} + R^{2})$			[53]
	双波段增强植被指数(two-band enhanced vegetation index,EVI2)		$E V I 2 = 2.5 (N I R - R) / (N I R + 2.4 R + 1)$			[54]
	扩展植被归一化指数(extended NDVI,ENDVI)		$E N D V I = \frac{N I R + S W I R 2 - R}{N I R + S W I R 2 + R}$			[55]
	扩展植被增强指数(extented enhanced vegetation index, EEVI)		$E E V I = \frac{2.5 (N I R + S W I R 1 - R)}{N I R + 2.5 (S W I R 1 + 6 N I R + R - 7.5 S W I R 1 - R) B + 1}$			[55]