基于无人机高光谱数据的玉米叶面积指数估算

程雪,贺炳彦,黄耀欢,孙志刚,李鼎,朱婉雪

Estimation of Corn Leaf Area Index based on UAV Hyperspectral Image

Xue Cheng,Bingyan He,Yaohuan Huang,Zhigang Sun,Ding Li,Wanxue Zhu

表5 LAI与植被指数相关性系数

Table 5 Correlation coefficient between leaf area index and vegetation index

植被指数 计算公式 参考文献 相关性系数 NDVI (R867-R636)/(R867+R636) Carlson T N（1997）[22] 0.86** RVI R867/R636 Anderson G L（1993）[23] 0.86** rNDVI (R760-R702)/(R760+R702) Prasad B et al (2007)[24] 0.85** mNDVI (R760-R702)/(R760+R702-2R445) Jurgens C(1997)[25] 0.85** EVI2 2.5·(R867-R636)/(R867+2.4R636+1) Mondal P (2011)[26] 0.86** OSAVI 1.16·(R867-R636)/(R867+R636+0.16) Steven M D(1998)[27] 0.85** 注：**表示0.01水平差异极显著