兰州市规模以上工业企业空间分布特征

Spatial distribution of industrial enterprises above designated size of Lanzhou City

梳理了2000-2015年兰州市规模以上工业企业数量变化,基于2000、2005、2013、2016年兰州市规模以上工业企业信息利用核密度、标准差椭圆等方法,揭示其空间分布格局以及时空动态演变.研究表明:数量上,2005年因兰州市国企改制,规模以上工业企业数量急剧减少,在县(区)上的分布呈现出"金字塔"形;空间密度上,兰州市规模以上工业企业呈"城密县疏"的分布特征,主城区分布密度明显大于周边县域;时空演变上,兰州市规模以上工业企业空间分布主趋势为向东南方向移动,空间分布范围呈现明显缩小趋势.

Sorts out the changes of industrial enterprises in Lanzhou from 2000 to 2015, and based on the information of Lanzhou industrial enterprises above designated size in 2000, 2005, 2013 and 2016, the spatial distribution pattern and temporal and spatial dynamic evolution of industrial enterprises above designated size thereof were revealed by means of the nuclear density and standard deviation ellipse. The results showed that in quantity, in 2005, due to the reform of state-owned enterprises, the number of industrial enterprises above designated size in Lanzhou decreased sharply, and showed a ＂pyramid＂ shape. In terms of spatial density, the main urban distribution density was significantly greater than the surrounding counties. In spatial and temporal evolution, the main trend of spatial distribution of industrial enterprises above designated size in Lanzhou was to move to the southeast, and the spatial distribution showed a significant narrowing trend.