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In order to elucidate the impact of varying sleep patterns on cognitive performance，this study leveraged the principle of complementarity among different chronotypes. This approach guided the strategic pairing of personnel for morning，evening，and night shifts，with the goal of enhancing operational safety and efficiency. The research involved a regimen of fixed sleep schedules，subjecting individuals with distinct sleep preferences to 30 hours of sleep deprivation. During this period，participants' HRV and levels of sustained attention were closely monitored. Moreover，the study utilized several established tools to evaluate fatigue in sleep-deprived individuals: the Karolinska Sleepiness Scale (KSS)，the Morningness-Eveningness Questionnaire (MEQ)，and the Pittsburgh Sleep Quality Index (PSQI). Findings revealed that，throughout the sleep deprivation period，individuals with a preference for evening activities exhibited significantly more pronounced variations in HRV time-domain indicators (RMSSD=38.301±17.056，P<0.001). These variations were characterized by greater fluctuation intensity and amplitude，as well as more evident periodicity. KSS scores across all chronotypes show a general upward trend，with those of intermediate chronotypes displaying the highest correlation with HRV frequency-domain indicators (LF/HF=0.769，P<0.05). Morning-oriented individuals demonstrated higher levels of sustained attention between 11:00 AM and 5:00 PM，with accuracy rate linear regression coefficients ranging from 1.5 to 1.7 (×10-4). In contrast，individuals with intermediate sleep patterns peaked in attention from 7:00 AM to 12:00 PM，while evening-oriented participants exhibited significantly different patterns compared to the other two groups.
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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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