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Understanding the travel behavior of children at different age is crucial for building child friendly communities. In this article, by taking Shuangliu District in Chengdu as an example, a survey on children's travel characteristics was conducted, and random forest model was employed to explore the nonlinear relationship between children's age and their daily travel behavior. The results show: (1) Children's age is the most significant factor affecting their travel behavior among various social demographic and family characteristics, especially the choice of travel companionship, the relative importance of which is 25.37%; (2) The mode of travel for children exhibited nonlinear characteristics as they grow, and became more independent and diverse; (3) The choice of travel companionship and destinations also showed nonlinear characteristics with age. Particularly after the age of 14, children tended to choose to travel alone or with friends, with a significant increase in their travel distance.
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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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