Passerine bird abundance

The avifauna is monitored with special emphasis on passerine birds representing the highest trophic level. Weekly counts of birds are carried out at 13 census points during the entire season. Other bird observations are recorded ad-hoc during the entire field season. For further details, please refer to the newest BioBasis manual available at the website.本研究针对鸟类区系（avifauna）开展监测工作，重点关注处于最高营养级的雀形目鸟类。在整个监测季内，于13个调查样点开展每周一次的鸟类数量统计；其余鸟类观测数据则在整个野外监测季内以临时记录的方式留存。如需了解更多细节，请参阅官网可获取的最新版《BioBasis手册》。