基于取食行为探究北京居民区鸟类的食源特征及多样性

殷鲁秦, 王成, 韩文静

Food source characteristics and diversity of birds based on feeding behavior in residential areas of Beijing

Luqin Yin, Cheng Wang, Wenjing Han

表2 基于取食行为的鸟类多样性与环境因子的模型选择

Table 2 Model selection relating bird diversity based on feeding behavior and environmental factors

响应变量 Response variables 模型 Model 自由度 df ΔAICc 权重 Weight R2 物种丰富度 Species richness CFST + SFST 3 0 0.1518 0.5729 CFST + SFST + PAR 4 0.0188 0.1504 0.5936 CFST + SFST + CY 4 1.2920 0.0796 0.5786 CFST + SFST + AREA 4 1.3209 0.0784 0.5692 物种密度 Species density CFST 3 0 0.1447 0.2352 CFST + SFST 4 0.5466 0.1101 0.2516 CFST + SFST + AREA 5 1.7703 0.0597 0.2572 Shannon-Wiener多样性指数 Shannon-Wiener diversity index CFST + SFST 4 0 0.1129 0.2516 CFST + SFST + CY 5 0.9647 0.0697 0.2516 SFST 3 1.1036 0.0650 0.0358 CFST + SFST + PAR 5 1.2596 0.0601 0.2431 CFST + SFST + CY 5 1.9831 0.0419 0.2431 CFST + SFST + BD 6 1.9843 0.0419 0.2253