Distance Friction and the Cost of Hunting in Tropical Forest
提出一个基于距离摩擦概念的空间生物经济模型，解释热带森林中狩猎努力、猎物收获和动物丰度的空间梯度，并通过亚马逊猎人的实地实验和已有数据验证模型。
Empirical studies of tropical forest hunting have shown the existence of marked spatial gradients of hunting effort, game harvest, and animal abundance, as hunters mostly hunt near villages, roads, and rivers. The mechanisms underlying these patterns have, however, hitherto been poorly known. This article presents a spatial bioeconomic model based on the concept of distance friction, that is, an increasing marginal cost of distance. The model is validated by comparison with an economic field experiment with Amazonian hunters and with previous empirical data on hunting. <i></i>