国家边界长期以来都是政治地理学研究中的突出主题。冷战结束后,东亚地区涌现大量毗邻国家之间的次区域合作,同时非传统边境安全异常突起。为此,国家边界由单一的维护传统边境安全的功能转变为同时维护传统边境安全、促进次区域经济合作及保障非传统边境安全的三重功能。这三者之间存在很强的内在联系,且相互之间在一定的条件下能够转化。在分析三者之间的内在联系的基础上,我们提出了形成梯级决策模式、合理定量化评估及建立多主体、多层次的协调机构来优化组合国家边界的"三重功能"的优化思路。

Borders, and especially international borders, have long been a prominent theme in political geography. On the one hand, borders between states demarcate the territory and jurisdiction of states; on the other, there is talk of the disappearance of borders, at the very least, their declining significance in an era of globalization. In the past 20 years, Sub-regional cooperative research has experienced three changes in research direction: the first is the research of the sub-regional Economic Cooperation; The second is the research of non-economic effects of the sub-regional economic cooperation; The third is the research of non-economic factors and non-economic areas of collaboration of the sub-regional cooperation. Meanwhile, the non-traditional border security is emerging apparently. The above three aspects have a close relationship with each other, and can change into each other under certain conditions. The triple function of national borders and their interactions and they can be transformed into each other determines that it process national bounder more complicated. On the basis of analyzing the relationship among the three aspects, we have put forward such optimized ideas as trapezoidal strategic mode, rational and quantitative evaluation, and establishment of the multi-main body and multi-level coordinated institutions to optimize the combination of the country border.