地理灰边界内涵及其研究应用价值

地理空间尺度大可达数万千米，小到仅几千米距离。不同尺度地理空间的边界，在人类所处的米尺度空间上观察，其精度是不同的。地理空间分区边界因划界因子构成复杂而形成过渡带，从而使地理空间在边界地区成为具有多向变数的灰色地带一灰边界，灰边界的国土开发因而具有多项选择。研究灰边界在理论上可将复杂的地理边界纳入统一的空间范围，在应用上可解决国土空间在边界地区的开发导向问题，为国土开发政策的制定提供参考依据。

The geographical gray boundary and its research value

The geographic space scale ranges from tens of thousands kilometers to a few kilometers. The bounda- ry of different geographic space scale, observed in different metrical scale space of human, tends to have different ac- curacy. Due to the complex delimitation factors, the subregion boundaries of geographic space form a transitional zone, which enables the geographic space to become a gray border with multi - directional choices, and which in turn contributes to a number of options for the land development in gray border. Theoretically, the study of gray boundary can include the complex geographical boundaries into unified space boundary; and in application, it can address the exploitation orientation of national land in the border area and provide reference for land development policies.