An Analysis of Statistical Data about Tibetan Plateau in China —&mdash|A Case Study on Population
青藏高原统计数据分析——以人口为例

Abstracts: One of the most difficult and emphasized research problems nowadays is how to getthe accurate data of a geographical unit that is intercrossed by the administrative units according to the statistical data. Choosing the Tibetan Plateau in China as a case of the geographical unit, we computed concisely the population and its change based on statistical yearbooks and census data of five periods. The ideas and computing methods about how to study on geographical units according to the survey data based on administrative units were the key points we talked, which gave reference to accurate basic data research on geographical units, especially on Tibetan Plateau. The real data model, equal-density edge theoretical data model, minimum data model, maximum data model and expecting data model were applied in computing population on Tibetan Plateau. The results showed : (1) There were 221 counties or cities distributing in 6 different provinces in the range of Tibetan Plateau in China, 155 of which were inside and 66 of which were on the edge. (2) The result from equal-density edge theoretical data model was the closest to the fact, while the expecting data model was the second. So the equal-density edge theoretical data model is fit for analyzing and computing statistical data on geographical units. The population on Tibetan Plateau in China was 12.04 million or so in 2001. (3) Linking with real inhabitant settlement distributions and other multi-source data to overlap and analyze will give a more accurate result.