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.
Highlights
Population distribution refers to manifestations of the population process in the space, and characterization of population groups in the geo-spatial distribution, distribution, and portfolio position [1] [2]
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
This paper studied population distribution characteristics of space and time of the Shiyang River Basin from 2000 to 2010, by analysis of population distribution, population distribution structure index analysis, population distribution center of gravity model and population offset growth analysis model, and mainly drew the following conclusion: 1) Shiyang River Basin population density is low, concentrated in the middle reaches corridor plains area and three population distribution centers of Minqini oasis region, and forms the “point-areas-ribbon” structure characteristics, regional centers, plain corridor areas and transportation corridors as the basis
Summary
Population distribution refers to manifestations of the population process in the space, and characterization of population groups in the geo-spatial distribution, distribution, and portfolio position [1] [2]. Water resources management of Shiyang River Basin becomes the basin development bottleneck. In the three watersheds of north-west inland river, Shiyang River Basin has become a basin with the highest level of soil and water resources development, the biggest ecological crisis, the strongest relationship between people and land. Study of the relationship between population and the environment of the Shiyang River Basin is concerned about the size of the population, and cares about the spatial distribution of population characteristics. The study of the Shiyang River Basin population distribution of the evolution of character and demographic offset growth characteristics, revealing the basin spatial distribution of population characteristics and laws is conducive to the integrated management of river basin water resources and industrial development, achieving coordination sustainable developments between people and environment
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