基于新型植被指数的冬小麦LAI高光谱反演

束美艳, 顾晓鹤, 孙林, 朱金山, 杨贵军, 王延仓, 张丽妍

High Spectral Inversion of Winter Wheat LAI Based on New Vegetation Index

MeiYan SHU, XiaoHe GU, Lin SUN, JinShan ZHU, GuiJun YANG, YanCang WANG, LiYan ZHANG

表1 常用植被指数计算公式

Table 1 Common vegetation index calculation formula

植被指数 Vegetable index 名称 Name 公式 Formula 参考文献 References RRWVI 红边抗水植被指数 Red-edge resistance water vegetable index $\frac{{{\text{R}}_{\text{970}}}\text{(}{{\text{R}}_{\text{790}}}\text{-}{{\text{R}}_{\text{720}}}\text{)}}{{{\text{R}}_{\text{900}}}\text{(}{{\text{R}}_{\text{790}}}\text{+}{{\text{R}}_{\text{720}}}\text{)}}$ NDVI 归一化植被指数 Normalized difference vegetation index $\frac{{{\text{R}}_{\text{800}}}\text{-}{{\text{R}}_{\text{670}}}}{{{\text{R}}_{\text{800}}}\text{+}{{\text{R}}_{\text{670}}}}$ [26] RVI 比值植被指数 Ratio vegetation index $\frac{{{\text{R}}_{\text{800}}}}{{{\text{R}}_{\text{670}}}}$ [27] DVI 差值植被指数 Difference vegetation index ${{\text{R}}_{\text{800}}}\text{-}{{\text{R}}_{670}}$ [28] SAVI 土壤调节植被指数 Soil-adjusted vegetation index $\frac{\text{1}\text{.5(}{{\text{R}}_{\text{800}}}\text{-}{{\text{R}}_{\text{670}}}\text{)}}{{{\text{R}}_{\text{800}}}\text{+}{{\text{R}}_{\text{670}}}\text{+0}\text{.5}}$ [29] NDRE 标准化差分红边植被指数 Normalized difference red edge $\frac{{{\text{R}}_{\text{790}}}\text{-}{{\text{R}}_{\text{720}}}}{{{\text{R}}_{\text{790}}}\text{+}{{\text{R}}_{\text{720}}}}$ [24] NVI 新植被指数 New vegetable index $\frac{{{\text{R}}_{\text{777}}}\text{-}{{\text{R}}_{\text{747}}}}{{{\text{R}}_{\text{673}}}}$ [30] NPCI 归一化色素叶绿素植被指数 Normalized pigment chlorophyll vegetation index $\frac{{{\text{R}}_{\text{800}}}\text{-}{{\text{R}}_{\text{680}}}}{{{\text{R}}_{\text{800}}}\text{+}{{\text{R}}_{\text{680}}}}$ [31] WI 水分指数 Water index $\frac{{{\text{R}}_{\text{900}}}}{{{\text{R}}_{\text{970}}}}$ [25] PRI 光辐射指数 Photon radiance index $\frac{{{\text{R}}_{\text{570}}}\text{-}{{\text{R}}_{\text{531}}}}{{{\text{R}}_{\text{570}}}\text{+}{{\text{R}}_{\text{531}}}}$ [32]