鸟类迁徙对图们江下游湿地声景时间格局的影响

王士政, 孙翊斐, 李珍珍, 舒越, 冯佳伟, 王天明

Effects of bird migration on the temporal patterns of the wetland soundscape in the downstream region of the Tumen River Basin of China

Shizheng Wang, Yifei Sun, Zhenzhen Li, Yue Shu, Jiawei Feng, Tianming Wang

图2 具有不同声学多样性的6秒时频图示例。 A代表只有雁类声信号的声景; B代表雁类和其他鸟类声信号都存在的声景; C代表无雁类声信号, 主要为2-11 kHz频段鸟类声信号的声景; D代表多种昆虫持续性声信号主导的声景。时频图在Kaleidoscope Pro软件(Wildlife Acoustics)中绘制, 使用短时傅里叶变换和Hann窗。

Fig. 2 Examples of 6 s-spectrograms with high and low acoustic diversity. (A) A soundscape with only wild geese vocal signals; (B) A soundscape with both wild geese and other bird vocal signals; (C) A soundscape devoid of wild geese vocal signals and dominated by bird vocal signals in the 2-11 kHz; (D) A soundscape dominated by multiple insect persistent vocal signals. Spectrograms were drawn with Kaleidoscope Pro software (Wildlife Acoustics), using short-time Fourier transform and Hann window type.