基于物候相机归一化植被指数估算高寒草地植物地上生物量的季节动态
陈哲1, 汪浩2,*(
), 王金洲1, 石慧瑾1, 刘慧颖3, 贺金生1,2
), 王金洲1, 石慧瑾1, 刘慧颖3, 贺金生1,2
Estimation on seasonal dynamics of alpine grassland aboveground biomass using phenology camera-derived NDVI
CHEN Zhe1, WANG Hao2,*(), WANG Jin-Zhou1, SHI Hui-Jin1, LIU Hui-Ying3, HE Jin-Sheng1,2
), WANG Jin-Zhou1, SHI Hui-Jin1, LIU Hui-Ying3, HE Jin-Sheng1,2
图5. 生长季不同时期建模(A)和单一时期(9月)建模(B)下高寒草地地上生物量的估算精度。实测生物量值是2018年生长季每次野外测定生物量的平均值(n = 10); 估算生物量值通过最优经验拟合模型和物候相机归一化植被指数计算获得。
Fig. 5. Estimation of alpine grassland aboveground biomass using models in different phases of growing season (A) and at a single time (September)(B). The actual biomass is the averaged biomass for each measurement during the growing season of 2018 (n = 10). The estimated biomass is calculated by the optimal model and normalized difference of vegetation index measured by NetCam.
