Spatial Difference of Economical Development Level among Counties in the Middle Region of"One River and Two Streams "in Tibet

The spatial difference of economical development level among county regions is very evident there are trends of decrease from big city to rural in the middle region of Tibet one river and two streams. In order to study quantificationally, the paper selects 6 indexes such as per capita GDP, Urbanization level, population natural growth rate, the precent of non-agricultural trades and so on. Through analyse of quantity fig, we can divide the all 18 counties into three types, i.e. advanced counties, including 2 counties such as Region of Lhasa. City, shzgatse City; middle counties, including 11 counties as Tolung Dechen, Medro Gongkar, Nedong, Danang; and depressed counties, including 5 counties as Thongmon, Namling. Sangri. At last according to the difference the author find some develop way for these counties.