关键词: 城镇体系, 城镇序列(等级), 城镇引力(影响)

Abstract: The first part of this paper is the process of Hainan urban foundation in history based on the urban system theory. According to the geographic conditions of the island and the administration division and the demands for economic development, tbe author divides Hainan's urban system into three levels; system of nobal economic region, system of big economic region and system of city hinterland. According to the conditions of relief and hydrology of the island and the charateristics of centripetal concentration of cities and economy in Hainan, the whole island is divided into five second rank-size groups.Then, two diagrams and a map are made, a deductive diagram of Hainan urban system, adopting tbe urban rank-size rule by Mr,Yang Wuyang, a Chinese, and the gravitation model from the law of universal gravitation by P.Allen, a foreigner; the comparision between gravitation theory delimitation and boundaries of regions and counties; and the sketch map showing the gravitating among the main towns of Hainan,Finally, some problems about the future building of Hainan urban system and, about the numbers and designs of the rank-size in Hainan, are discussed. And proposals and arrangements for all above are put for ward in this article.

Key words: Urban system, Urban rank-size, Urban graviation (influence)