Coastal zone vegetation phenological parameter satellite image calibration method combined with ground observation

The invention relates to a coastal zone vegetation phenological parameter satellite image calibration method combined with ground observation. The method comprises the following steps: acquiring a ground camera photo and a satellite remote sensing image; respectively carrying out data preprocessing on the ground camera photo and the satellite remote sensing image, and fitting a GCC time sequence observation curve and an NDVI time sequence observation curve; and calculating the phenological parameter of each pixel covering the research area image by using the optimal threshold value so as to obtain the phenological spatial distribution. The method has the beneficial effects that phenological parameter information of ground phenological photos with dense and continuous observation is automatically obtained according to the phenological curve inflection points, and phenological parameter information of satellite images with sparse observation and unequal distribution is extracted through continuous change thresh