According to the technical scheme, the 
sky-ground 
integrated monitoring method comprises the steps that S1, firstly, infected and withered trees are extracted through unmanned aerial vehicle images, plaques of the infected and withered trees are extracted through 
satellite images, and on-site marking, positioning and measuring are conducted on the withered trees through ground investigation; s2, respectively acquiring high-spatial-resolution 
satellite remote sensing data and unmanned aerial vehicle 
remote sensing data as data sources, and jointly forming a 
data set of a monitoring area in combination with 
ground survey data and 
forest resource second-class survey data; s3, establishing samples of the epidemic trees according to the data, wherein the samples comprise spectral features, texture features and geometric features of the 
pine wood nematode disease withered and dead trees; and S4, according to the sample and 
satellite remote sensing, confirming the infected, withered and 
dead tree plaques, comprehensively applying an 
image enhancement and image classification method, performing 
verification, and establishing 
spatial distribution information and position information of the 
pine wood nematode disease withered and dead trees. The method has the advantages of high epidemic area screening efficiency, capability of realizing large-area efficient monitoring, convenience in acquisition of remote 
sensing data of the unmanned aerial vehicle, high recognition precision and guarantee for precision 
verification.