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Dynamic features, such as chromospheric jets, transition region network jets,coronal plumes and coronal jets, are abundant in the network regions of thesolar polar coronal holes. We investigate the relationship betweenchromospheric jets and coronal activities (e.g., coronal plumes and jets).Weanalyze observations of a polar coronal hole including the filtergrams thatwere taken by the New Vacuum Solar Telescope (NVST) at the H{\alpha}-0.6{\AA}to study the H{\alpha} jets,and the Atmospheric Imaging Assembly (AIA) 171{\AA} images to follow the evolution of coronal activities. H{\alpha} jets arepersistent in the network regions, only some regions (denoted as R1-R5) arerooted with discernible coronal plumes.With an automated method, we identifyand track 1 320 H{\alpha} jets in the network regions. We find that the averagelifetime, height and ascending speed of the H{\alpha} jets are 75.38 s, 2.67Mm, 65.60 km s$^{-1}$, respectively. The H{\alpha} jets rooted in R1-R5 arehigher and faster than those in the others. We also find that propagatingdisturbances (PDs) in coronal plumes have a close connection with the H{\alpha}jets. The speeds of 28 out of 29 H{\alpha} jets associated with PDs are about50 km s$^{-1}$ . In a case of coronal jet, we find that the speeds of both thecoronal jet and the H{\alpha} jet are over 150 km s$^{-1}$, suggesting thatboth cool and hot jets can be coupled together. Based on our analyses, it isevident that more dynamic H{\alpha} jets could release the energies to thecorona, which might be the results of the development of Kelvin-Helmholtzinstability (KHi) or small-scaled magnetic activities. We suggest thatchromospheric jets, transition region network jets and ray-like features in thecorona are coherent phenomena, and they are important tunnels for cyclingenergy and mass in the solar atmosphere.

Statistical properties of H{\alpha} jets in the polar coronal hole and their implications in coronal activities