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Based on multi-frequency GNSS observations within a 450 km radius of the 2025 MW6.8 Dingri earthquake epicenter, including low-frequency (30 s), high-rate (1 Hz), and ultra-high-rate (50 Hz) data, we derived both coseismic static displacement fields and dynamic waveforms using precise point positioning (PPP) technology. Our findings reveal that: 1) The low-frequency GNSS coseismic static displacement field shows a maximum permanent westward displacement of 40.0 mm in the epicentral region, consistent with regional tectonic stress field patterns; 2) High-frequency GNSS waveforms captured significant dynamic displacement peaks at near-field stations, with the XZZF (Everest) station exhibiting 28.83 mm east-west displacement, though a 12.5 mm deviation from low-frequency results was observed due to dynamic effects; 3) Ultra-high-rate GNSS waveforms recorded Love and Rayleigh waves in the far field, identifying double-pulse characteristics of fault segmented rupture. Spectral analysis of high- and ultra-high-rate coseismic waveforms demonstrated that near-field stations (such as XZZF) concentrated energy primarily at 0.5 to 5 Hz, reflecting initial fault rupture processes, while far-field stations (such as XZRK) were dominated by low-frequency surface waves (0.1 to 1 Hz), validating the complementary nature of multi-frequency GNSS data. Notably, ultra-high-rate observations proved irreplaceable for capturing high-rate components (>5 Hz) and transient rupture processes of seismic waves, providing critical constraints for earthquake source parameter inversion.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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