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Relationships of relief degree of topography with population and economy in Hengduan mountain area based on GIS
Received date: 2015-11-20
Revised date: 2016-03-21
Online published: 2016-07-15
Relief degree of topography is a significant factor to affect the development of economy and society.By using window analysis theory and mean change-point analysis method, the optimal statistical unit of relief amplitude is extracted based on ASTER GDEM data, and then the classification and correlation analyses on relief degree of topography are carried out.It is shown that 0.202 5 km2 is the best measuring unit.The differences in relief amplitude between different provinces are obvious, and the differences are not obvious in each province.Meanwhile, the relationships of relief degree of topography with population and economy are analyzed by using spatial analysis technique,statistical method, and PCA sorting method.The results show that population density gradually decreases with relief degree of topography and it reaches a fixed value when relief degree of topography is 3.7.The negative correlation degree of relief degree of topography with the proportion of the third industry is large, the degree with urbanization rate is less, and the degree with per capita GDP is the least.
CHEN Tiantian , PENG Li , LIU Shaoquan , WANG Xuxi , XU Dingde . Relationships of relief degree of topography with population and economy in Hengduan mountain area based on GIS[J]. Journal of University of Chinese Academy of Sciences, 2016 , 33(4) : 505 -512 . DOI: 10.7523/j.issn.2095-6134.2016.04.011
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