Correlation Analysis of the Population and Land Use Distribution with the Relief Degree of Land Surface in Henan Province

Abstract

Aiming at the impact of the relief degree of land surface on population and land use distribution, based on the digital elevation model, population distribution and land use classification grid data, the paper utilizes geographic statistical analysis method to quantitatively analyze the correlation between population distribution and the relief degree of land surface, as well as the impact of the relief degree of land surface on land use distribution. The results show that: in Henan province, with the increase of the relief degree of land surface, the area occupied gradually decreases. The relief degree is dominated by low value, the longitude pattern showing the characteristics of west high and east low, and the latitude pattern showing the characteristics of two downward parabolic. The variation on the same longitude belt is obviously larger than that on the same latitude belt. The difference of population aggregation degree is very significant, there is a strong correlation between population density and relief degree. With the increase of relief degree, the farmland area gradually decrease, the density of the region with the relief degree less than 0.5 is 178 times higher than that of the region with the relief degree greater than 3. With the increase of relief degree, the forestland area gradually increase, the density of the region with the relief degree greater than 3 is 24 times higher than that of the region the relief degree less than 0.5. The grassland mainly is distributed in the region with the relief degree belong to (0.5,1]. About 87.29% of water land is distributed in the region with the relief degree less than 0.5, where is also the region with the maximum density, the density of the region with the relief degree greater than 3 is the minimum. More than 96.40% of construction land is distributed in the region with the relief degree less than 0.5, the region with the relief degree greater than 3 has a little construction land, the maximum density of construction land is 308 times of the minimum density.