The fourth part is mainly on the tourism products system, the function district, the spatial layout and six essential factors of the destination locate constructions.
第四部分主要就目的地建设中的旅游产品体系、功能分区和空间布局及六大要素建设做了一定研究；
System and integration are two related concepts. The system of regional tourism resources may be integrated among factors, structure, function, relation and gradation.
系统与整合是两个相联系的概念，区域旅游资源系统可以进行要素、结构、功能、相关性、层次性等方面的整合。
In addition, the system must have certain statistical analysis function and the print function. The users can print the data inquired and the tourism resources thematic map and so on.
此外，系统还要具有一定的统计分析功能和打印功能，用户可以打印查询的数据，也可以打印旅游资源专题图等。
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