This paper aims to assess causes and the interactions between decision making, stakeholders and individuals, law and public policies to build a more precise overview of the relations, the possible results, and the factors which can interfere with environmental conditions and dynamics in Brazilian Amazônia. To better elucidate the issue, rational choice and deterrence theories were used, and a model based on game theory was built. It shows that the noncooperative Nash solution is compatible with the full depletion of the Brazilian Amazônia’s resources and the tragedy of the commons could be certain. The lack of incentive for greener practices and deficiencies in the Brazilian law system can be pointed out as two of the main causes for the current noncollaborative interactions between the agents that lead to environmental degradation in the region. However, other aspects and circumstances are being disregarded in Brazilian environmental law and policies.

本文旨在评估决策，利益相关者与个人，法律和公共政策之间的原因和相互作用，以更精确地概述这种关系，可能的结果以及可能干扰巴西亚马逊环境状况和动态的因素。为了更好地阐明问题，使用了理性选择和威慑理论，并建立了基于博弈论的模型。它表明，非合作的Nash解决方案与巴西亚马逊资源的全部枯竭兼容，并且可以确定公地的悲剧。可以指出，缺乏鼓励更环保做法的动机和巴西法律体系的缺陷，是造成该地区环境恶化的主体之间当前非合作互动的两个主要原因。