基于无人机与卫星遥感的草原地上生物量反演研究

李淑贞,徐大伟,范凯凯,陈金强,佟旭泽,辛晓平,王旭

Research of Grassland Aboveground Biomass Inversion based on UAV and Satellite Remoting Sensing

Shuzhen Li,Dawei Xu,Kaikai Fan,Jinqiang Chen,Xuze Tong,Xiaoping Xin,Xu Wang

表2 基于无人机植被指数的草原地上生物量回归模型

Table 2 Regression model of grassland aboveground biomass based on UAV vegetation index

植被指数 生物量 估算模型 R2 F P GNDVI 鲜重 y =840.19x - 104.50 0.61 99.28 *** 干重 y =326.90x - 48.54 0.56 82.87 *** LCI 鲜重 y = 1 453.52x + 68.41 0.72 165.50 *** 干重 y = 566.46x + 18.59 0.67 130.80 *** NDRE 鲜重 y = 2 977.87x - 5.12 0.73 168.60 *** 干重 y = 1 143.90x - 8.37 0.66 121.80 *** NDVI 鲜重 y = 542.77x - 17.15 0.61 99.87 *** 干重 y = 212.41x - 15.26 0.57 85.60 *** OSAVI 鲜重 y = 992.10x + 45.95 0.61 99.23 *** 干重 y = 394.52x + 7.84 0.59 91.83 *** EVI 鲜重 y = 110.32x + 52.82 0.64 113.30 *** 干重 y = 43.64x + 11.08 0.61 101.40 ***