TITLE:
Population Distribution Evolution Characteristics and Shift Growth Analysis in Shiyang River Basin
AUTHORS:
Minzhi Chen, Peizhen Wang, Li Chen
KEYWORDS:
Shiyang River Basin, Population Distribution, Evolution Characteristics, Shift Growth Analysis
JOURNAL NAME:
International Journal of Geosciences,
Vol.5 No.11,
October
27,
2014
ABSTRACT: In recent years, the
population size and scale of the Shiyang River Basin unceasingly expanding lead
to a series of ecological environment: surface water reducing, land
desertification and Ground water levels fall, etc. Research evolution
characteristics of population distribution and migration growth of Shiyang
River Basin contribute to river water resources and the industrial development
of the comprehensive management. The article using the distribution of population
structure index, population distribution center of gravity model and the
population migration growth analysis model analyzes the distribution of the
population evolution characteristics and population migration growth
characteristics of Shiyang River Basin in 2000 to 2010. The results show that:
1) Considering Shiyang River Basin, population density is generally low,
population distribution difference is bigger and concentration distribution in
the middle corridor plain and three big population distribution center of
Minqin oasis area, presenting a “point-areas-ribbon” structure characteristics. 2) The population distribution trend of Shiyang
River Basin is constantly concentration, but the change is slow; the population
distribution of Minqin is in the highest concentration degree, but the trend
has been declining. 3) The focus of population density in river basin locates
in Liangzhou district of Daliu country; in ten years, it migrates about 1209 m
to southwest Wuwei City direction, but migration along the direction things is
bigger than the north and south direction. The focus of population density and
the basin geometry center is far away. 4) For ten years, at the township for
basic statistics unit, each level population migration change within the
overall is not significant: township level > prefecture-level cities level >
counties level. 5) For ten years, there are significant changes in population
migration between watershed township units, Wuwei City and Gulang Town are the
two main concentrations of population centers.