1990—2005年甘肃省人口经济压力空间格局及变化分析

The analysis of spatial pattern and change about population-economy pressure in Gansu Province during 1990 to 2005

针对影响甘肃省人口经济压力的内在矛盾和外在因素,确定了评价指标,采用主成分分析法计算了人口经济压力指数,再通过聚类分析等方法,定量分析了人口经济压力的空间格局和时间序列变化特征.结果表明,甘肃省人口经济压力空间格局具有明显的地域特征,大部分地区人口经济压力在1990—2005年间有不同程度的增加.人口自身带来的压力是主要因素,经济发展缓慢也是不可忽视的重要因素.

Aiming at the internal contradictions and external factors which affect the population-economy pressure,the evaluation index system is confirmed.The principal component analysis is adopted to calculate the population-economy pressure index.And then through clustering analytical method,the spatial pattern and the time-sequence change of the population-economy pressure in Gansu Province are quantitively analysed.The result shows that the spatial pattern of the population-economy pressure has obvious clime characters in different areas of Gansu Province.The population-economy pressure of the most areas is increased with different degreed during 1990 to 2005.The population pressure is the main factor,but the slow growth of the economic development is also an important factor.