结合使用主成分分析和GIS空间分析方法,构建了包括17项指标的评价指标体系,在综合评价156个县域2000、2004、2008和2012年经济发展指数的基础上,分析了四川省县域经济发展的时空演变特征.结果表明:四川省县域经济差异总体稳定,少数发达地区和落后地区县域经济波动较大;经济类型转变发生不显著,相对发达地区对周围地区具有的虹吸效应;县域经济差异先扩大后减小;县域经济类型结构由橄榄型逐步转变为金字塔型,后又变为橄榄型.空间上呈中间高、四周低的格局且空间集聚显著,高值集聚县域数量与分布较为稳定;除成都、德阳和绵阳市辖区发展较快外,少数县域经济发展水平有所提升,灾后重建一定程度上推动了均衡发展,但成都"一核独大"的状况未发生根本性变化.%Using principal component and GIS spatial analysis methods, composite index were constructed by 17 economic indicators for 156 counties of Sichuan Province in 2000, 2004, 2008 and 2012, to study temporal-spatial change characteristics of the county-level economic de-velopment in Sichuan Province.The results showed that: Most counties had a relatively stable position in Sichuan Province, and countries whose composite indexes fluctuate larger were mainly distributed in developed and undeveloped areas .Counties' economic disparities expand-ed in the first period, then maintained stability, and reduced in the last period.The number structure of counties development type evolved from "football-type" to "pyramid-type", and turned back to "football-type" lastly.High development level counties were in center, surroun-ded by low development level counties in periphery .High and low level development counties had an obvious spatial concentration characteris-tic.The most developed counties were mainly distributed in Chengdu Plain and low development level counties were in western Sichuan Plateau and Northeast Sichuan, southern Sichuan mountainous regions.In Chengdu plain, except for the rapid development of Chengdu, Deyang and Mianyang municipal district, a few County greatly improved their economic strength.Constructions after Wenchuan earthquake also contributed to economic growth in affected areas.
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