基于参数化和非参数化法的棉花生物量高光谱遥感估算

周萌,韩晓旭,郑恒彪,程涛,田永超,朱艳,曹卫星,姚霞

Remote Sensing Estimation of Cotton Biomass Based on Parametric and Nonparametric Methods by Using Hyperspectral Reflectance

ZHOU Meng,HAN XiaoXu,ZHENG HengBiao,CHENG Tao,TIAN YongChao,ZHU Yan,CAO WeiXing,YAO Xia

表2 高光谱植被指数计算方法

Table 2 Algorithm of different hyperspectral vegetation indices

植被指数 Vegetation index 名称 Name 公式 Formula 文献 Reference DI 差值指数 Difference index R800 -R550 [26] DVI 差值植被指数 Difference vegetation index R800 -R680 [27] RVI 比值植被指数 Ratio vegetation index R787/R765 [5] SRPI 简单比值色素指数 Simple ratio pigment index R430 /R680 [28] NPCI 叶绿素归一化植被指数 Chlorophyll normalized vegetation index (R680-R430)/(R680+R430) [29] MTCI 中分辨率陆地叶绿素成像指数 MERIS terrestrial chlorophyll index (R750-R710)/(R710-R680) [30] DATT DATT (R800-R720)/( R800 -R680) [31] CIred edge 红边叶绿素指数 Red edge chlorophyll index (R800 /R720)- 1 [32] NDVI 归一化植被指数 Normalized vegetation index (R780-R670)/(R780-R670) [33] GNDVI 绿色归一化植被指数 Green normalized vegetation index (R801-R550)/(R800+R550) [34] EVI 增强型植被指数 Enhanced vegetation index 2.5×(RNIR /RRED )/(RNIR+6.0×RRED-7.5×RBLUE+1) [35] OSAVI 优化土壤调整植被指数 Optimized soil-adjusted vegetation index 1.16×(RNIR-RRED)/(RNIR+RRED+0.16) [36] PRI 光化学植被指数 Physiological reflectance index (R531-R570)/(R530+R570) [37] TVI 三角形植被指数 Triangle vegetation index 0.5×[120×(R750-R550)-200×(R670-R550)] [38]