基于PROSPECT-VISIR模型构建新植被水分指数

王界, 王光辉, 刘宇, 齐建伟, 张涛

Construction of new vegetation water index based on PROSPECT-VISIR model

WANG Jie, WANG Guanghui, LIU Yu, QI Jianwei, ZHANG Tao

表1 4种新型植被水分指数

Tab.1 Four new water index of vegetation

传统植 被指数 公式① 新型植 被指数 公式 NDII NDII = $\frac{\rho_{820}\ \ -\ \rho_{1600}}{\rho_{820}\ \ +\ \rho_{1600}}$ NDIIM NDIIM= $\frac{\rho_{1600}\ \ -\ \rho_{4200}}{\rho_{1600}\ \ +\ \rho_{4200}}$ NDWI NDWI= $\frac{\rho_{860}\ \ -\ \rho_{1240}}{\rho_{860}\ \ +\ \rho_{1240}}$ NDWIM NDWIM= $\frac{\rho_{1240}\ \ -\ \rho_{4200}}{\rho_{1240}\ \ +\ \rho_{4200}}$ NMDI NMDI= $\frac{\rho_{860}\ \ -\ (\rho_{1640}\ \ -\ \rho_{2130}\ \ )}{\rho_{860}\ \ +\ (\rho_{1640}\ \ +\ \rho_{2130}\ \ )}$ NMDIM NMDIM= $\frac{\rho_{860}\ \ -\ (\rho_{4200}\ \ -\ \rho_{2130}\ \ )}{\rho_{860}\ \ +\ (\rho_{4200}\ \ +\ \rho_{2130}\ \ )}$ NDVI NDVI= $\frac{\rho_{895}\ \ -\ \rho_{675}}{\rho_{895}\ \ +\ \rho_{675}}$ NDVIM NDVIM= $\frac{\rho_{895}\ \ -\ \rho_{4200}}{\rho_{895}\ \ +\ \rho_{4200}}$