基于Sentinel卫星及无人机多光谱的滨海冬小麦种植区土壤盐分反演研究——以黄三角垦利区为例

奚雪,赵庚星,高鹏,崔昆,李涛

Inversion of Soil Salinity in Coastal Winter Wheat Growing Area Based on Sentinel Satellite and Unmanned Aerial Vehicle Multi-Spectrum— A Case Study in Kenli District of the Yellow River Delta

XI Xue,ZHAO GengXing,GAO Peng,CUI Kun,LI Tao

表1 光谱指数计算公式

Table 1 Calculation formula of spectral index

光谱指数 Spectral index 计算公式 Computational formula 参考文献 Reference 归一化植被指数NDVI (bNIR-bR)/( bNIR+bR) [32] 比值植被指数RVI bNIR/bR [32] 差值植被指数DVI bNIR-bR [32] 绿波段比值植被指数GRVI bNIR/bG [32] 盐分指数SI $\sqrt{bG\times bR}$ [33]