LAI无人机多光谱遥感估测及其在盐渍土改良中的应用

史丰智,王瑞燕,李玉环,闫宏,张晓鑫

LAI Estimation Based on Multi-Spectral Remote Sensing of UAV and Its Application in Saline Soil Improvement

FengZhi SHI,RuiYan WANG,YuHuan LI,Hong YAN,XiaoXin ZHANG

表3 不同滤波处理后光谱指数与叶面积指数相关性

Table 3 Correlation between spectral index and leaf area index after six filtering treatments

不同窗口 Different window 植被指数 Vegetation index 1×1 2×2 3×3 4×4 5×5 6×6 7×7 NDVI 0.62** 0.66** 0.64** 0.66** 0.67** 0.62** 0.67** RVI 0.78** 0.80** 0.81** 0.81** 0.82** 0.79** 0.79** GNDVI 0.59** 0.63** 0.62** 0.67** 0.66** 0.63** 0.67** GRVI 0.75** 0.79** 0.77** 0.79** 0.79** 0.77** 0.79** (G+R)/NIR 0.55** 0.58** 0.57** 0.60** 0.60** 0.56** 0.61**